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Don't see what you need? Contact us. We have many more tubes that are not yet listed. We also have new and good used tubes in most other numbers including preoctal, globe/balloon, octal, loctal, miniature, subminiature, metal, power, transmitter tubes and many more.

MDB Ventures Audio Tubes
Qty
Avail
Tube
Type
Price
Each
Tube
Brand
Emission
Strength
Mutual
Conduct

Desc

Notes
1 12AT7 / ECC81 $40.00 Amperex 125% / 130% 4300: 4800 / 4000Gm NOS (OB) (M9) oval gray plates (cat:409-12)
1 12AT7 $25.00 Mullard / IEC 100% / 120% 4800: 5000 / 4000Gm NOS (OB) (M9) oval gray plates
1 12AT7 / ECC81 $25.00 Conn by Amperex 100% / 110% 3800: 4000 / 4000Gm used (rb) (M9) oval gray plates - top halo getter - Germany
1 12AT7 $15.00 Sylvania 110% / 125% 4300: 4400 / 4000Gm NOS (OB) (M9) oval gray plates - tripple mica - yellow lettering
1 12AT7WA $12.00 Sylvania 110% / 110% 4400: 4400 / 4000Gm NOS (OB) (M9) rectangular smooth gray plates - green lettering
1 12AT7WA $12.00 Sylvania 140% / 140% 4400: 4600 / 4000Gm NOS (OB) (M9) oval gray plates - tripple mica - green lettering
1 12AT7WA $12.00 Sylvania 140% / 120% 4600: 4600 / 4000Gm NOS (OB) (M9) oval gray plates - tripple mica - gold lettering
1 12AT7WB $12.00 Sylvnaia 110% / 110% 4100: 4300 / 4000Gm NOS (OB) (M9) rectangular ribbed black plates - JAN - green lettering
1 12AT7WC $12.00 Sylvania 110% / 120% 4400: 4500 / 4000Gm NOS (OB) (M9) rectangular ribbed black plates - green lettering
1 12AT7 / ECC81 $12.00 Sylvania 110% / 115% 4800: 4800 / 4000Gm NOS (OB) (M9) single wing rectangular smooth gray plates - Gold lettering - India
1 12AT7 $20.00 Tung-Sol 110% / 110% 4200: 4200 / 4000Gm NOS (OB) (M9) oval gray plates
1 12AT7 $20.00 Tung-Sol 110% / 110% 4200: 4200 / 4000Gm NOS (OB) (M9) oval gray plates
1 12AT7 $20.00 Tung-Sol 110% / 110% 4600: 4500 / 4000Gm NOS (OB) (M9) oval gray plates
1 12AT7 / ECC81 $20.00 RCA 120% / 110% 4800: 4500 / 4000Gm NOS (OB) (M9) rectangular ribbed gray plates - red lettering
1 12AT7 / ECC81 $20.00 RCA 100% / 100% 4200: 4300 / 4000Gm NOS (OB) (M9) oval gray plates - red lettering
1 12AT7 / ECC81 $20.00 RCA 120% / 120% 4200: 4200 / 4000Gm NOS (OB) (M9) oval gray plates - red lettering
1 12AT7 / ECC81 $20.00 RCA 120% / 110% 4600: 4200 / 4000Gm NOS (OB) (M9) oval gray plates - red lettering
1 12AT7 $20.00 RCA 120% / 110% 4600: 4200 / 4000Gm NOS (OB) (M9) oval black plates - white lettering
1 12AT7 $20.00 RCA 110% / 110% 4700: 4600 / 4000Gm NOS (OB) (M9) oval black plates - white lettering
1 12AT7 $20.00 RCA 110% / 110% 4500: 4500 / 4000Gm NOS (OB) (M9) oval black plates - red lettering
1 12AT7 $20.00 RCA 110% / 110% 4200: 4300 / 4000Gm NOS (OB) (M9) oval gray plates - red lettering
1 12AT7 $20.00 RCA 110% / 110% 4400: 4400 / 4000Gm NOS (OB) (M9) oval black plates - red lettering
1 12AT7 $20.00 RCA 115% / 120% 5200: 5200 / 4000Gm NOS (OB) (M9) oval black plates - red lettering
1 12AT7 $20.00 RCA 110% / 110% 4200: 4200 / 4000Gm NOS (OB) (M9) oval black plates - white lettering
1 12AT7 $20.00 National Union 120% / 115% 4600: 4800 / 4000Gm NOS (OB) (M9) oval black plates
1 12AT7 $15.00 GE 110% / 110% 4200: 4200 / 4000Gm NOS (OB) (M9) single wing rectangular smooth gray plates - white lettering - Gt Britain
1 12AT7 $12.00 Raytheon 110% / 110% 4300: 4300 / 4000Gm NOS (OB) (M9) oval gray plates
1 12AT7 $12.00 Raytheon 110% / 110% 4400: 4500 / 4000Gm NOS (OB) (M9) oval gray plates
1 12AT7 $12.00 Raytheon 110% / 110% 4200: 4600 / 4000Gm NOS (OB) (M9) oval black plates
1 12AT7 $12.00 Raytheon 110% / 120% 4200: 4800 / 4000Gm NOS (OB) (M9) oval gray plates
1 12AT7 $12.00 Raytheon 120% / 120% 4000: 4500 / 4000Gm NOS (OB) (M9) oval black plates
1 12AT7 $10.00 Silvertone 110% / 110% 4200: 4200 / 4000Gm NOS (OB) (M9) oval gray plates
1 12AT7 $10.00 Zenith 110% / 110% 4200: 4200 / 4000Gm NOS (OB) (M9) oval gray plates
1 12AT7 / ECC81 $10.00 Westinghouse 110% / 110% 4200: 4400 / 4000Gm NOS (OB) (M9) oval gray plates - Japan
1 12AT7 / ECC81 $10.00 El Menco 120% / 110% 4800: 4300 / 4000Gm NOS (OB) (M9) single wing rectangular smooth gray plates
1 12AT7 $10.00 Futaba 110% / 120% 4500: 4700 / 4000Gm NOS (OB) (M9) oval gray plates
1 12AT7 / ECC81 $10.00 Lindal 120% / 110% 4400: 4300 / 4000Gm NOS (OB) (M9) oval gray plates
1 12AT7 / ECC81 $10.00 GE 110% / 125% 4600: 5200 / 4000Gm NOS (OB) (M9) oval gray plates
1 12AT7 / ECC81 $10.00 GE 120% / 120% 5200: 5500 / 4000Gm NOS (OB) (M9) oval gray plates - white lettering
1 12AT7 / ECC81 $10.00 GE 115% / 115% 4800: 5200 / 4000Gm NOS (OB) (M9) oval gray plates - white lettering
1 12AT7 $10.00 GE 140% / 130% 5400: 5000 / 4000Gm NOS (wb) (M9) oval gray plates
1 12AT7 $10.00 GE 110% / 110% 4400: 4500 / 4000Gm NOS (OB) (M9) oval gray plates - red lettering
1 12AT7 $10.00 GE 110% / 110% 4700: 4800 / 4000Gm NOS (OB) (M9) oval gray plates - white lettering
1 12AT7 $10.00 GE 110% / 110% 4800: 4600 / 4000Gm NOS (OB) (M9) oval gray plates - white lettering
1 12AT7 $10.00 GE 110% / 110% 4500: 4400 / 4000Gm NOS (OB) (M9) oval gray plates - white lettering
1 12AT7 $10.00 GE 110% / 125% 4000: 4400 / 4000Gm NOS (OB) (M9) oval gray plates - white lettering
1 12AT7 $10.00 GE 115% / 120% 5000: 5500 / 4000Gm NOS (OB) (M9) oval gray plates - white lettering
1 12AT7 $10.00 GE 120% / 110% 4800: 4800 / 4000Gm NOS (OB) (M9) oval gray plates - red lettering
1 12AT7 $10.00 GE 110% / 130% 4500: 5000 / 4000Gm NOS (OB) (M9) oval gray plates - red lettering
1 12AT7 $10.00 GE 130% / 120% 4600: 4300 / 4000Gm NOS (OB) (M9) oval gray plates - white lettering
1 12AT7 $10.00 GE 110% / 110% 4200: 4200 / 4000Gm NOS (OB) (M9) oval gray plates - white lettering
1 12AT7 / ECC81 $10.00 Sylvania 115% / 120% 4500: 4700 / 4000Gm NOS (wb) (M9) rectangular black plates - yellow
1 12AT7 $10.00 Sylvania 125% / 130% 5000: 5200 / 4000Gm NOS (OB) (M9) oval gray plates - yellow lettering
1 12AT7 $10.00 Sylvania 110% / 110% 4200: 4200 / 4000Gm NOS (OB) (M9) oval gray plates - yellow lettering
1 12AT7 $10.00 IEC 110% / 120% 4100: 4400 / 4000Gm NOS (OB) (M9) oval gray plates
1 12AT7 $10.00 IEC 120% / 120% 5000: 4800 / 4000Gm NOS (OB) (M9) oval gray plates
1 12AT7 $10.00 IEC 110% / 120% 4200: 4500 / 4000Gm NOS (OB) (M9) oval gray plates
1 12AT7 $10.00 IEC 110% / 120% 4800: 5000 / 4000Gm NOS (OB) (M9) oval gray plates
1 12AT7 $10.00 Hitachi 110% / 120% 4200: 4200 / 4000Gm NOS (OB) (M9) oval gray plates
1 12AT7 $10.00 Hitachi 110% / 125% 4600: 4700 / 4000Gm NOS (OB) (M9) oval gray plates
1 12AT7 $10.00 Hitachi 110% / 110% 3800: 4100 / 4000Gm NOS (OB) (M9) oval gray plates
1 12AT7 $10.00 Hitachi 120% / 110% 4200: 3800 / 4000Gm NOS (OB) (M9) oval gray plates
1 12AT7 $10.00 Hitachi 100% / 110% 3800: 4200 / 4000Gm NOS (OB) (M9) oval gray plates
1 12AT7 $10.00 Channel Master 110% / 110% 5600: 5000 / 4000Gm NOS (OB) (M9) oval gray plates
1 12AT7 $10.00 Channel Master 110% / 110% 4600: 4600 / 4000Gm NOS (OB) (M9) oval gray plates
1 12AT7 $10.00 Channel Master 115% / 120% 5600: 5000 / 4000Gm NOS (OB) (M9) oval gray plates
1 12AT7 $10.00 Channel Master 110% / 120% 5000: 5200 / 4000Gm NOS (OB) (M9) oval gray plates
1 12AT7 $7.50 Tung-Sol 100% / 130% 4000: 4600 / 4000Gm used (ob) (M9) oval gray plates
1 12AT7 $10.00 RCA 110% / 115% 4000: 4000 / 4000Gm used (wb) (M9) rectanglar ribbed gray plates - red lettering
1 12AT7 $10.00 RCA 125% / 125% 5000: 5400 / 4000Gm used (ob) (M9) oval black plates - white lettering
1 12AT7 $10.00 RCA 110% / 110% 4600: 4600 / 4000Gm used (ob) (M9) oval black plates - white lettering
1 12AT7 $10.00 RCA 130% / 110% 4800: 4500 / 4000Gm used (wb) (M9) oval black plates
1 12AT7 $10.00 RCA 120% / 130% 4000: 4600 / 4000Gm used (ob) (M9) oval black plates - white lettering
1 12AT7 $9.00 RCA 110% / 110% 4100: 4100 / 4000Gm used (wb) (M9) oval gray plates
1 12AT7 $9.00 RCA 130% / 110% 4500: 4100 / 4000Gm used (wb) (M9) oval gray plates
1 12AT7 $9.00 RCA 110% / 115% 4100: 4400 / 4000Gm used (wb) (M9) oval gray plates
1 12AT7 $9.00 RCA 110% / 110% 3800: 3800 / 4000Gm used (ob) (M9) oval gray plates - red lettering - for Tektronix
1 12AT7 $9.00 RCA 120% / 130% 5600: 5600 / 4000Gm used (wb) (M9) oval gray plates - red lettering
1 12AT7 / ECC81 $7.50 RCA 100% / 110% 3600: 4000 / 4000Gm used (ob) (M9) rectangular ribbed gray plates - red lettering
1 12AT7 $7.50 RCA 100% / 120% 4000: 4700 / 4000Gm used (ob) (M9) rectangular ribbed black plates - red lettering
1 12AT7 $7.50 RCA 105% / 105% 4400: 4500 / 4000Gm used (ob) (M9) oval black plates - white lettering
1 12AT7 $7.50 RCA 100% / 105% 4200: 4400 / 4000Gm used (ob) (M9) oval black plates - white lettering
1 12AT7 $7.50 RCA 120% / 100% 4200: 4000 / 4000Gm used (ob) (M9) oval black plates - white lettering
1 12AT7 $7.50 RCA 105% / 110% 4200: 4500 / 4000Gm used (wb) (M9) oval black plates - white lettering
1 12AT7 $7.50 RCA 100% / 100% 3400: 3200 / 4000Gm used (rb) (M9) oval black plates - white lettering
1 12AT7 $7.50 RCA 100% / 100% 4400: 4400 / 4000Gm used (rb) (M9) oval black plates - white lettering
1 12AT7 $7.50 RCA 120% / 100% 4400: 4000 / 4000Gm used (wb) (M9) oval gray plates
1 12AT7 $7.50 RCA 100% / 100% 4200: 4200 / 4000Gm used (ob) (M9) oval gray plates - red lettering
1 12AT7 $7.50 RCA 100% / 100% 4400: 4200 / 4000Gm used (ob) (M9) oval gray plates - red lettering
1 12AT7 $7.50 RCA 105% / 100% 4100: 3800 / 4000Gm used (ob) (M9) oval gray plates - red lettering
1 12AT7 $7.50 RCA 105% / 110% 4100: 4300 / 4000Gm used (ob) (M9) oval gray plates - red lettering
1 12AT7 $7.50 RCA 100% / 105% 4200: 4300 / 4000Gm used (wb) (M9) oval gray plates - red lettering
1 12AT7 $7.50 RCA 110% / 100% 4200: 3900 / 4000Gm used (rb) (M9) oval gray plates - red lettering
1 12AT7 $7.50 RCA 100% / 110% 3400: 3700 / 4000Gm used (rb) (M9) oval gray plates - white lettering
1 12AT7 $6.00 RCA 100% / 100% 4000: 4200 / 4000Gm used (L) (M9) gray plates
1 12AT7 $5.00 RCA 90% / 100% 3000: 2900 / 4000Gm used (L) (M9) oval black plates
1 12AT7 $5.00 RCA 90% / 90% 3000: 3000 / 4000Gm used (L) (M9) oval black plates (B-AT2)
1 12AT7 $5.00 RCA 95% / 110% 4100: 4400 / 4000Gm used (L) (M9) oval gray plates - red letttering (ATC-1)
1 12AT7 $5.00 RCA 100% / 90% 3900: 3800 / 4000Gm used (L) (M9) oval black plates - red lettering (ATC-1)
1 12AT7 $5.00 RCA 100% / 90% 4100: 3600 / 4000Gm used (L) (M9) oval black plates - red lettering (ATC-1)
1 12AT7 $5.00 RCA 90% / 100% 3900: 4100 / 4000Gm used (L) (M9) oval black plates - white lettering (ATC-1)
1 12AT7 $5.00 RCA 100% / 95% 3900: 3800 / 4000Gm used (L) (M9) oval gray plates - red lettering (ATC-1)
1 12AT7 $5.00 RCA 95% / 95% 4400: 4100 / 4000Gm used (L) (M9) oval black plates - white lettering (ATC-1)
1 12AT7 $5.00 RCA 100% / 90% 3400: 3200 / 4000Gm used (L) (M9) oval black plates - white lettering (ATC-1)
1 12AT7 / ECC81 $5.00 RCA 90% / 90% 3600: 3400 / 4000Gm used (L) (M9) oval gray plates - red lettering (ATC-1)
1 12AT7 $5.00 RCA 90% / 90% 3500: 3600 / 4000Gm used (L) (M9) oval gray plates - red lettering (ATC-1)
1 12AT7 $5.00 RCA 120% / 90% 4100: 3600 / 4000Gm used (L) (M9) oval black plates - white lettering (ATC-1)
1 12AT7 $5.00 RCA 90% / 100% 3800: 3900 / 4000Gm used (L) (M9) oval black plates - white lettering (ATC-1)
1 12AT7 $5.00 RCA 90% / 95% 3600: 3800 / 4000Gm used (L) (M9) oval gray plates - red lettering (ATC-1)
1 12AT7 $5.00 RCA 90% / 90% 3800: 3800 / 4000Gm used (L) (M9) oval black plates - white lettering (ATC-1)
1 12AT7 $5.00 RCA 100% / 90% 4200: 3900 / 4000Gm used (L) (M9) oval black plates - white lettering (ATC-1)
1 12AT7 $5.00 RCA 90% / 120% 4300: 4400 / 4000Gm used (L) (M9) oval black plates - white lettering (ATC-1)
1 12AT7 $5.00 RCA 95% / 100% 4000: 4000 / 4000Gm used (L) (M9) oval black plates - red lettering (ATC-1)
1 12AT7 $5.00 RCA 90% / 100% 3500: 3900 / 4000Gm used (L) (M9) oval gray plates - red lettering (ATC-1)
1 12AT7 $5.00 RCA 90% / 100% 4000: 4200 / 4000Gm used (L) (M9) oval black plates - red lettering (ATC-1)
1 12AT7 $5.00 RCA 100% / 95% 3400: 3200 / 4000Gm used (L) (M9) oval black plates - white lettering (ATC-1)
1 12AT7 $5.00 RCA 90% / 100% 4000: 4000 / 4000Gm used (L) (M9) oval black plates - red lettering (ATC-1)
1 12AT7 $5.00 RCA 100% / 90% 4400: 4300 / 4000Gm used (L) (M9) oval black plates - red lettering (ATC-1)
1 12AT7 $5.00 RCA 90% / 100% 3000: 3250 / 4000Gm used (L) (M9) oval black plates - white lettering (ATC-1)
1 12AT7 $5.00 RCA 90% / 90% 3400: 3700 / 4000Gm used (L) (M9) oval black plates - white lettering (ATC-1)
1 12AT7 $5.00 RCA 90% / 100% 3600: 3600 / 4000Gm used (L) (M9) oval black plates - white lettering (ATC-1)
1 12AT7 $5.00 RCA 90% / 90% 3650: 3800 / 4000Gm used (L) (M9) oval gray plates - red lettering (ATC-1)
1 12AT7 $5.00 RCA 100% / 95% 4000: 4000 / 4000Gm used (L) (M9) oval black plates - white lettering (ATC-1)
1 12AT7 $5.00 RCA 100% / 95% 3700: 3400 / 4000Gm used (L) (M9) oval black plates - white lettering (ATC-1)
1 12AT7 / ECC81 $5.00 Arkay 90% / 90% 4100: 4100 / 4000Gm used (L) (M9) oval black plates - England
1 12AT7 / ECC81 $6.00 Daystrom 110% / 115% 4000: 4200 / 4000Gm used (rb) (M9) single wing rectangular ribbed gray plates - Germany
1 12AT7 $5.00 Crown 90% / 90% 3600: 4200 / 4000Gm used (L) (M9) single wing rectangular ribbed gray plates - West Germany
1 12AT7 $5.00 Philips 95% / 100% 3500: 3600 / 4000Gm used (L) (M9) single wing rectangular smooth gray plates - gt Britain
1 12AT7 $5.00 unknown 110% / 100% 4000: 3900 / 4000Gm used (wb) (M9) rectangular smooth black plates - gold pins
1 12AT7-S $7.50 NEC 100% / 100% 4000: 4100 / 4000Gm used (rb) (M9) oval gray plates
1 12AT7-WA $7.50 RCA 100% / 120% 4300: 4800 / 4000Gm used (rb) (M9) rectangular ribbed black plates - red lettering
1 12AT7-WB $6.00 Sylvania 110% / 120% 3500: 3600 / 4000Gm used (wb) (M9) rectangular ribbed gray plates - green lettering
1 12AT7-WC $6.00 Sylvania 100% / 100% 4000: 4000 / 4000Gm used (wb) (M9) rectangular ribbed black plates - green lettering
1 12AT7-WA $6.00 Tung-Sol 100% / 110% 3900: 4200 / 4000Gm used (rb) (M9) oval gray plates
1 12AT7-WA $5.00 Tung-Sol 100% / 90% 3900: 3600 / 4000Gm used (rb) (M9) oval black plates
1 12AT7-WA $4.00 Sylvania 90% / 90% 3000 / 3400 / 4000Gm used (ob) (M9) rectangular ribbed black plates - green lettering
1 12AT7-WA $5.00 Sylvania 90% / 100% 3400: 3800 / 4000Gm used (L) (M9) oval gray plates - gold lettering
1 12AT7-WA $4.00 Raytheon 110% / 90% 4200: 3900 / 4000Gm used (L) (M9) oval black plates
1 12AT7-WA $6.00 unknown (usa) 110% / 110% 4200: 4200 / 4000Gm used (wb) (M9) oval black plates
1 12AT7-WA $6.00 unknown 130% / 110% 4700: 4300 / 4000Gm used (wb) (M9) rectangular smooth gray plates
1 12AT7-WA $6.00 unknown 110% / 110% 4300: 4400 / 4000Gm used (wb) (M9) rectangular black plates
1 12AT7-WA $8.00 RCA 120% / 100% 4900: 4400 / 4000Gm used (wb) (M9) oval black plates - tripple mica - white lettering
1 12AT7-WA $8.00 Sylvania 120% / 120% 4800: 4800 / 4000Gm used (wb) (M9) oval gray plates - triple mica - gold lettering
1 12AT7 $7.50 Sylvania 120% / 110% 4800: 4700 / 4000Gm used (rb) (M9) oval gray plates - triple mica spacers
1 12AT7 $7.50 Sylvania 120% / 110% 5000: 4600 / 4000Gm used (wb) (M9) oval gray plates - tripple mica - yellow lettering
1 12AT7 $7.50 GE 110% / 110% 4000: 4200 / 4000Gm used (wb) (M9) oval gray plates - tripple mica - white lettering
1 12AT7-WA $7.50 Sylvania 105% / 110% 3800: 3900 / 4000Gm used (wb) (M9) oval gray plates - triple mica
1 12AT7-WA $7.50 Sylvania 100% / 120% 4200: 4700 / 4000Gm used (wb) (M9) oval gray plates - triple mica - gold lettering
1 12AT7-WA $7.00 Sylvania 100% / 110% 3900: 4400 / 4000Gm used (wb) (M9) oval black plates - triple mica - green lettering
1 12AT7 $6.00 Sylvania 100% / 115% 4500: 5000 / 4000Gm used (rb) (M9) oval gray plates - tripple mica - green lettering
1 12AT7-WA $6.00 GE 90% / 100% 3200: 3300 / 4000Gm used (wb) (M9) gray plates - tripple mica spacers
1 12AT7 $5.00 Ruby 90% / 90% 3200: 3200 / 4000Gm used (rb) (M9) oval gray plates - tripple mica - internal shield
1 12AT7 $5.00 unknown 90% / 120% 3300: 4300 / 4000Gm used (L) (M9) oval black plates - tripple mica (B-AT2)
1 12AT7 $5.00 Sylvania 90% / 90% 3200: 3500 / 4000Gm used (L) (M9) oval black plates - tripple mica - green lettering
1 12AT7 $7.50 Raytheon 110% / 120% 4300: 4700 / 4000Gm used (rb) (M9) oval gray plates
1 12AT7 $7.50 Raytheon 115% / 115% 4300: 4400 / 4000Gm used (rb) (M9) oval black plates
1 12AT7 $7.50 Raytheon 120% / 115% 4500: 4500 / 4000Gm used (rb) (M9) oval gray plates
1 12AT7 $7.50 Raytheon 115% / 125% 5200: 5400 / 4000Gm used (rb) (M9) oval gray plates
1 12AT7 $7.50 Raytheon 130% / 110% 4500: 4200 / 4000Gm used (rb) (M9) oval gray plates
1 12AT7 $7.50 Raytheon 110% / 110% 4500: 4600 / 4000Gm used (wb) (M9) oval gray plates
1 12AT7 $5.00 Raytheon 105% / 110% 4200: 4200 / 4000Gm used (rb) (M9) oval gray plates
1 12AT7 $5.00 Raytheon 120% / 100% 5100: 4500 / 4000Gm used (rb) (M9) oval gray plates
1 12AT7 $5.00 Raytheon 120% / 105% 4400: 3800 / 4000Gm used (rb) (M9) oval gray plates
1 12AT7 $5.00 Raytheon 110% / 105% 4300: 4000 / 4000Gm used (L) (M9) oval gray plates (B-ATR1)
1 12AT7 $5.00 Raytheon 105% / 105% 4200: 4000 / 4000Gm used (L) (M9) oval gray plates (B-ATR1)
1 12AT7 $5.00 Raytheon 100% / 110% 4000: 4400 / 4000Gm used (L) (M9) oval gray plates (B-ATR1)
1 12AT7 $5.00 Raytheon 100% / 100% 4500: 5000 / 4000Gm used (L) (M9) oval gray plates (B-ATR1)
1 12AT7 $5.00 Raytheon 100% / 100% 3800: 4000 / 4000Gm used (L) (M9) oval gray plates (B-ATR1)
1 12AT7 $5.00 Raytheon 100% / 100% 4300: 4200 / 4000Gm used (L) (M9) oval gray plates (B-ATR1)
1 12AT7 $5.00 Raytheon 100% / 110% 3000: 3400 / 4000Gm used (L) (M9) oval gray plates (B-ATR1)
1 12AT7 $5.00 Raytheon 100% / 135% 4300: 5200 / 4000Gm used (L) (M9) oval gray plates (B-ATR1)
1 12AT7 $5.00 Raytheon 100% / 110% 3600: 4100 / 4000Gm used (L) (M9) oval gray plates (B-ATR1)
1 12AT7 $5.00 Raytheon 100% / 100% 4000: 4300 / 4000Gm used (L) (M9) oval black plates (B-ATR1)
1 12AT7 $4.00 Raytheon 110% / 90% 4200: 4200 / 4000Gm used (L) (M9) oval gray plates
1 12AT7 $4.00 Raytheon 90% / 115% 3400: 4000 / 4000Gm used (L) (M9) oval gray plates
1 12AT7 $4.00 Raytheon 90% / 90% 4000: 4200 / 4000Gm used (L) (M9) oval gray plates
1 12AT7 $4.00 Raytheon 90% / 120% 3400: 3900 / 4000Gm used (rb) (M9) oval gray plates
1 12AT7 $5.00 Philco 110% / 100% 3900: 3800 / 4000Gm used (rb) (M9) oval gray plates
1 12AT7 $5.00 Philco 105% / 110% 4200: 4200 / 4000Gm used (ob) (M9) oval black plates
1 12AT7 $5.00 Philco 100% / 120% 4400: 5000 / 4000Gm used (rb) (M9) oval gray plates
1 12AT7 $6.00 Eric Electronics (by GE) 125% / 120% 4800: 4600 / 4000Gm used (rb) (M9) oval gray plates
1 12AT7 $6.00 Hallicrafters 120% / 120% 4200: 4200 / 4000Gm used (wb) (M9) oval gray plates
1 12AT7 $6.00 Selectron 120% / 110% 5000: 4600 / 4000Gm used (rb) (M9) oval gray plates
1 12AT7 / ECC81 $6.00 Realistic 110% / 110% 4200: 4000 / 4000Gm used (rb) (M9) single wing rectangular ribbed gray plates - Gold pins - Japan
1 12AT7 $5.00 Matsushita 100% / 110% 4100: 4000 / 4000Gm used (rb) (M9) single wing rectangular smooth gray plates
1 12AT7 $5.00 Zenith 100% / 100% 4000: 3800 / 4000Gm used (rb) (M9) oval gray plates
1 12AT7 / ECC81 $5.00 Philips 100% / 100% 4400: 4500 / 4000Gm used (rb) (M9) rectangular ribbed black plates
1 12AT7 $5.00 GM / Delco 100% / 110% 3900: 4400 / 4000Gm used (wb) (M9) rectangular ribbed black plates
1 12AT7 $5.00 B&K 100% / 100% 4500: 4200 / 4000Gm used (rb) (M9) oval black plates
1 12AT7 $3.00 Hallicrafters 90% / 90% 3600: 3400 / 4000Gm used (L) (M9) oval gray plates
1 12AT7 $3.00 Hallicrafters 90% / 100% 3300: 3600 / 4000Gm used (L) (M9) oval gray plates
1 12AT7 $3.00 Grnell 90% / 100% 4200: 4400 / 4000Gm used (L) (M9) oval black plates
1 12AT7 $3.00 Selectron 90% / 100% 3800: 4000 / 4000Gm used (L) (M9) oval black plates
1 12AT7 $3.00 Tru-Vac 100% / 90% 3700: 3500 / 4000Gm used (L) (M9) oval black plates
1 12AT7 $7.50 Fender 120% / 120% 4600: 4800 / 4000Gm used (rb) (M9) oval gray plates
1 12AT7 $5.00 Viking 100% / 100% 4200: 4100 / 4000Gm used (rb) (M9) oval black plates
1 12AT7 / ECC81 $5.00 Realistic 120% / 100% 5200: 4700 / 4000Gm used (rb) (M9) oval gray plates - gold pins
1 12AT7 / ECC81 $6.00 GE 120% / 120% 4600: 5000 / 4000Gm used (ob) (M9) oval gray plates - white lettering
1 12AT7 / ECC81 $6.00 GE 110% / 120% 5200: 5400 / 4000Gm used (ob) (M9) oval gray plates - white lettering
1 12AT7 $6.00 GE 115% / 130% 4600: 4900 / 4000Gm used (wb) (M9) oval gray plates
1 12AT7 $6.00 GE 120% / 125% 5000: 5000 / 4000Gm used (wb) (M9) oval gray plates
1 12AT7 $6.00 GE 110% / 110% 5000: 4800 / 4000Gm used (rb) (M9) oval gray plates - white lettering
1 12AT7 $6.00 GE 110% / 110% 4800: 4500 / 4000Gm used (rb) (M9) oval gray plates - red lettering
1 12AT7 $6.00 GE 120% / 110% 5200: 4600 / 4000Gm used (rb) (M9) oval gray plates - white lettering
1 12AT7 $6.00 GE 110% / 110% 4400: 4400 / 4000Gm used (ob) (M9) oval gray plates - white lettering
1 12AT7 $6.00 GE 110% / 110% 4500: 4500 / 4000Gm used (ob) (M9) oval gray plates - white lettering
1 12AT7 $6.00 GE 110% / 110% 3500: 3500 / 4000Gm used (ob) (M9) oval gray plates - white lettering
1 12AT7 $6.00 GE 120% / 110% 4300: 4200 / 4000Gm used (ob) (M9) oval gray plates - white lettering
1 12AT7 $6.00 GE 120% / 125% 5200: 5300 / 4000Gm used (ob) (M9) oval gray plates - white lettering
1 12AT7 $6.00 GE 110% / 110% 4500: 4500 / 4000Gm used (ob) (M9) oval gray plates - red lettering
1 12AT7 / ECC81 $5.00 GE 105% / 110% 4600: 4800 / 4000Gm used (rb) (M9) oval gray plates - white lettering
1 12AT7 $5.00 GE 100% / 110% 4400: 4500 / 4000Gm used (rb) (M9) oval gray plates - white lettering
1 12AT7 $5.00 GE 100% / 110% 3400: 3600 / 4000Gm used (ob) (M9) oval gray plates - white lettering
1 12AT7 $5.00 GE 100% / 100% 4100: 3600 / 4000Gm used (rb) (M9) oval gray plates - white lettering
1 12AT7 $5.00 GE 115% / 100% 5000: 4000 / 4000Gm used (rb) (M9) oval gray plates - white lettering
1 12AT7 $5.00 GE 100% / 100% 4500: 4500 / 4000Gm used (rb) (M9) oval gray plates - white lettering
1 12AT7 $5.00 GE 100% / 110% 4000: 4500 / 4000Gm used (wb) (M9) oval gray plates - white lettering
1 12AT7 $5.00 GE 105% / 100% 4000: 3400 / 4000Gm used (rb) (M9) oval gray plates - white lettering
1 12AT7 $5.00 GE 100% / 100% 3900: 3900 / 4000Gm used (rb) (M9) oval gray plates - white lettering
1 12AT7 $5.00 GE 120% / 100% 4800: 4200 / 4000Gm used (rb) (M9) oval gray plates - white lettering
1 12AT7 $5.00 GE 115% / 100% 4500: 4000 / 4000Gm used (wb) (M9) oval gray plates - white lettering
1 12AT7 $5.00 GE 105% / 110% 4200: 4200 / 4000Gm used (rb) (M9) oval gray plates - red lettering
1 12AT7 $5.00 GE 120% / 105% 4600: 4400 / 4000Gm used (rb) (M9) oval gray plates - red lettering
1 12AT7 $4.00 GE 90% / 110% 4100: 4200 / 4000Gm used (L) (M9) oval gray plates - white lettering (B-ATR1)
1 12AT7 $4.00 GE 90% / 100% 4400: 5200 / 4000Gm used (L) (M9) oval gray plates - white lettering (B-ATR1)
1 12AT7 $4.00 GE 95% / 100% 5200: 5200 / 4000Gm used (L) (M9) oval gray plates - white lettering (B-ATR1)
1 12AT7 $4.00 GE 90% / 90% 3600: 3500 / 4000Gm used (L) (M9) oval gray plates - white lettering (B-ATR1)
1 12AT7 $4.00 GE 100% / 90% 3400: 3400 / 4000Gm used (L) (M9) oval gray plates - white lettering (B-ATR1)
1 12AT7 $4.00 GE 90% / 95% 4000: 4000 / 4000Gm used (L) (M9) oval gray plates - white lettering (B-ATR1)
1 12AT7 $4.00 GE 90% / 110% 4200: 4600 / 4000Gm used (L) (M9) oval gray plates - white lettering (B-ATR1)
1 12AT7 $4.00 GE 90% / 100% 3800: 4200 / 4000Gm used (L) (M9) oval gray plates - white lettering (B-ATR1)
1 12AT7 $4.00 GE 90% / 120% 4300: 5200 / 4000Gm used (L) (M9) oval gray plates - white lettering (B-ATR1)
1 12AT7 $4.00 GE 110% / 90% 3900: 3200 / 4000Gm used (L) (M9) oval gray plates - red lettering (B-ATR1)
1 12AT7 $4.00 GE 130% / 90% 4800: 3800 / 4000Gm used (L) (M9) oval gray plates (B-AT2)
1 12AT7 $4.00 GE 90% / 90% 4000: 4100 / 4000Gm used (rb) (M9) oval gray plates
1 12AT7 / ECC81 $6.00 Sylvania 110% / 110% 4300: 4300 / 4000Gm used (ob) (M9) rectangular ribbed black plates - red lettering
1 12AT7 / ECC81 $6.00 Sylvania 110% / 120% 4400: 4400 / 4000Gm used (ob) (M9) rectangular ribed black plates - yellow lettering
1 12AT7 $6.00 Sylvania 130% / 130% 4800: 4800 / 4000Gm used (wb) (M9) retangular black plates - yellow lettering
1 12AT7 $6.00 Sylvania 110% / 110% 3600: 3800 / 4000Gm used (ob) (M9) oval gray plates - yellow lettering
1 12AT7 $6.00 Sylvania 130% / 130% 5200: 5000 / 4000Gm used (rb) (M9) oval gray plates - yellow lettering
1 12AT7 $6.00 Sylvania 110% / 110% 4000: 4000 / 4000Gm used (rb) (M9) oval gray plates - yellow lettering
1 12AT7 $6.00 Sylvania 110% / 110% 4600: 4900 / 4000Gm used (rb) (M9) rectangular ribbed black plates - yellow lettering
1 12AT7 $6.00 Sylvania 120% / 110% 4200: 4000 / 4000Gm used (rb) (M9) oval black plates - yellow lettering
1 12AT7 $6.00 Sylvania 130% / 120% 5200: 5000 / 4000Gm used (ob) (M9) rectangular ribbed gray plates - yellow lettering
1 12AT7 $6.00 Sylvania 110% / 110% 4200: 4400 / 4000Gm used (ob) (M9) oval gray plates - green lettering
1 12AT7 $5.00 Sylvania 105% / 110% 4000: 4000 / 4000Gm used (rb) (M9) oval gray plates - yellow lettering
1 12AT7 $5.00 Sylvania 105% / 105% 4000: 4100 / 4000Gm used (ob) (M9) oval black plates - green lettering
1 12AT7 $5.00 Sylvania 110% / 100% 4000: 3200 / 4000Gm used (L) (M9) oval gray plates - red lettering
1 12AT7 $5.00 Sylvania 100% / 110% 3800: 4200 / 4000Gm used (L) (M9) oval gray plates - yellow lettering
1 12AT7 $5.00 Sylvania 110% / 100% 4000: 3700 / 4000Gm used (L) (M9) oval gray plates - yellow lettering
1 12AT7 $5.00 Sylvania 100% / 100% 4000: 4500 / 4000Gm used (L) (M9) oval black plates - green lettering
1 12AT7 $4.00 Sylvania 90% / 110% 3300: 4000 / 4000Gm used (L) (M9) oval black plates - yellow lettering (B-AT2)
1 12AT7 $4.00 Sylvania 90% / 90% 3800: 3600 / 4000Gm used (L) (M9) oval black plates - yellow lettering
1 12AT7 $4.00 Sylvania 90% / 100% 3600: 3800 / 4000Gm used (L) (M9) oval black plates - yellow lettering
1 12AT7 $4.00 Sylvania 90% / 90% 4000: 3400 / 4000Gm used (L) (M9) rectangular ribbed gray plates - yellow lettering
1 12AT7 $4.00 Sylvania 95% / 105% 4000: 4200 / 4000Gm used (L) (M9) oval gray plates - yellow lettering
1 12AT7 / ECC81 $4.00 Sylvania 90% / 120% 4400: 5500 / 4000Gm used (ob) (M9) rectangular ribbed black plates - yellow lettering
1 12AT7 / ECC81 $4.00 Sylvania 90% / 100% 4500: 4500 / 4000Gm used (ob) (M9) single wing rectangular smooth gray plates - yellow/white lettering
1 12AT7 $6.00 CBS 110% / 110% 4700: 4500 / 4000Gm used (ob) (M9) oval gray plates
1 12AT7 / ECC81 $6.00 CBS 120% / 110% 4700: 4500 / 4000Gm used (ob) (M9) oval black plates
1 12AT7 $4.00 CBS 100% / 95% 3400: 3300 / 4000Gm used (L) (M9) oval gray plates
1 12AT7 $4.00 CBS 110% / 95% 4100: 3600 / 4000Gm used (L) (M9) oval black plates (B-AT2)
1 12AT7 $6.00 Motorola 110% / 130% 4400: 5000 / 4000Gm used (ob) (M9) oval gray plates
1 12AT7 $5.00 Motorola 100% / 100% 3600: 3600 / 4000Gm used (ob) (M9) oval gray plates
1 12AT7 $5.00 Motorola 100% / 115% 4700: 4800 / 4000Gm used (ob) (M9) oval black plates
1 12AT7 $5.00 Motorola 100% / 90% 4000: 4000 / 4000Gm used (L) (M9) oval gray plates
1 12AT7 $5.00 Motorola 95% / 110% 4100: 4300 / 4000Gm used (L) (M9) oval gray plates
1 12AT7 $5.00 Motorola 110% / 90% 4200: 3500 / 4000Gm used (L) (M9) oval gray plates
1 12AT7 $5.00 Motorola 90% / 110% 3600: 4200 / 4000Gm used (L) (M9) oval gray plates
1 12AT7 $5.00 Motorola 95% / 100% 3500: 3800 / 4000Gm used (L) (M9) oval black plates
1 12AT7 $5.00 Motorola 100% / 95% 4000: 3600 / 4000Gm used (L) (M9) oval gray plates
1 12AT7 $6.00 Motorola 110% / 100% 3300: 3600 / 4000Gm used (L) (M9) oval gray plates
1 12AT7 $5.00 Motorola 100% / 90% 340: 3000 / 4000Gm used (L) (M9) oval gray plates
1 12AT7 $5.00 Motorola 90% / 90% 4000: 4000 / 4000Gm used (L) (M9) oval gray plates
1 12AT7 $5.00 Motorola 100% / 115% 4200: 4400 / 4000Gm used (L) (M9) oval gray plates
1 12AT7 $6.00 Motorola 110% / 110% 3800: 3900 / 4000Gm used (L) (M9) oval gray plates
1 12AT7 $3.00 Westinghouse 90% / 85% 3400: 3200 / 4000Gm used (L) (M9) oval black plates (B-ATW1)
1 12AT7 $3.00 Westinghouse 95% / 110% 3500: 3900 / 4000Gm used (L) (M9) single wing rectangular smooth gray plates (B-ATW1)
1 12AT7 $3.00 Westinghouse 100% / 90% 4300: 3800 / 4000Gm used (L) (M9) single wing rectangular smooth gray plates (B-ATW1)
1 12AT7 $5.00 unknown (usa) 110% / 110% 3300: 3800 / 4000Gm used (L) (M9) oval gray plates (B-AT1)
1 12AT7 $5.00 unknown 115% / 115% 4600: 4600 / 4000Gm used (L) (M9) oval gray plates (B-AT1)
1 12AT7 $5.00 unknown 115% / 110% 4400: 4200 / 4000Gm used (L) (M9) oval gray plates (B-AT1)
1 12AT7 $5.00 unknown 115% / 110% 4700: 4300 / 4000Gm used (L) (M9) oval gray plates (B-AT1)
1 12AT7 $5.00 unknown 110% / 110% 4700: 4600 / 4000Gm used (L) (M9) oval black plates
1 12AT7 $4.00 unknown 100% / 110% 3500: 4000 / 4000Gm used (L) (M9) oval gray plates (B-AT1)
1 12AT7 $4.00 unknown 110% / 100% 4200: 3700 / 4000Gm used (L) (M9) oval gray plates (B-AT1)
1 12AT7 $4.00 unknown 100% / 100% 3400: 3500 / 4000Gm used (L) (M9) oval gray plates (B-AT1)
1 12AT7 $4.00 unknown 100% / 105% 4000: 4000 / 4000Gm used (L) (M9) oval gray plates (B-AT1)
1 12AT7 $4.00 unknown 100% / 100% 3500: 3600 / 4000Gm used (L) (M9) oval gray plates (B-AT1)
1 12AT7 $4.00 unknown (usa) 100% / 110% 3700: 4200 / 4000Gm used (L) (M9) oval gray plates (B-AT2)
1 12AT7 $4.00 unknown 110% / 105% 3900: 3800 / 4000Gm used (L) (M9) oval gray plates (B-AT2)
1 12AT7 $4.00 unknown 105% / 100% 3900: 3800 / 4000Gm used (L) (M9) oval gray plates
1 12AT7 / ECC81 $4.00 unknown 100% / 105% 3200: 3500 / 4000Gm used (wb) (M9) rectangular smooth gray plates
1 12AT7 $4.00 unknown 100% / 110% 3900: 3600 / 4000Gm used (L) (M9) oval gray plates
1 12AT7 $4.00 unknown 100% / 105% 3900: 4100 / 4000Gm used (L) (M9) oval gray plates
1 12AT7 $4.00 unknown 110% / 100% 4400: 4400 / 4000Gm used (L) (M9) oval black plates
1 12AT7 $3.00 unknown 90% / 110% 3500: 4100 / 4000Gm used (L) (M9) oval gray plates (B-AT1)
1 12AT7 $3.00 unknown 95% / 95% 3600: 3600 / 4000Gm used (L) (M9) oval gray plates (B-AT1)
1 12AT7 $3.00 unknown 100% / 95% 3500: 3800 / 4000Gm used (L) (M9) oval gray plates (B-AT1)
1 12AT7 $3.00 unknown 95% / 115% 4000: 4400 / 4000Gm used (L) (M9) oval gray plates (B-AT1)
1 12AT7 $3.00 unknown 95% / 100% 3300: 3500 / 4000Gm used (L) (M9) oval gray plates (B-AT1)
1 12AT7 $3.00 unknown 90% / 100% 3200: 3100 / 4000Gm used (L) (M9) oval gray plates (B-AT2)
1 12AT7 $3.00 unknown 90% / 100% 3000: 3400 / 4000Gm used (L) (M9) oval gray plates
1 12AT7 $3.00 unknown 90% / 90% 3400: 3400 / 4000Gm used (L) (M9) oval gray plates
1 12AT7 $3.00 unknown 95% / 90% 3500: 3400 / 4000Gm used (L) (M9) oval black plates
1 12AT7 $3.00 unknown 90% / 90% 3600: 4100 / 4000Gm used (L) (M9) oval black plates
1 12AT7 / ECC81 $3.00 unknown 95% / 100% 3500: 3800 / 4000Gm used (L) (M9) single wing rectangular ribbed gray plates
1 6060 / M8162 $10.00 Sylvania 130% / 140% 4600: 4800 / 4000Gm used (wb) (M9) oval black plates - yellow lettering
1 6201 / 12AT7-WA $12.00 GE 110% / 110% 4500: 4300 / 4000Gm NOS (OB) (M9) oval gray plates - white lettering
1 6201 / 12AT7-WA $12.00 GE 110% / 110% 4500: 4800 / 4000Gm NOS (wb) (M9) oval gray plates - white lettering
1 6201 / 12AT7-WC $12.00 GE 110% / 110% 4200: 4200 / 4000Gm NOS (OB) (M9) oval gray plates - green lettering - torn box flap
1 6201 / 12AT7 $12.00 GE 110% / 110% 4300: 4300 / 4000Gm NOS (OB) (M9) oval gray plates - white lettering - five star
1 6201 / 12AT7-WA $7.50 GE 110% / 120% 3400: 3300 / 4000Gm used (wb) (M9) oval gray plates - tripple mica spacers
1 6201 / 12AT7-WA $7.50 GE 110% / 115% 4200: 4600 / 4000Gm used (wb) (M9) oval gray plates - double stuff mica spacers - green lettering
1 6201 / 12AT7-WA $7.50 GE 120% / 110% 4900: 4500 / 4000Gm used (wb) (M9) oval gray plates - double stuff mica spacers - green lettering
1 6201 / 12AT7-WA $7.50 GE 110% / 110% 4500: 4400 / 4000Gm used (wb) (M9) oval gray plates - tripple mica spacers - white lettering
1 6201 / 12AT7-WA $7.50 GE 110% / 120% 4000: 4500 / 4000Gm used (wb) (M9) oval gray plates - tripple mica spacers - white lettering
1 6201 / 12AT7-WA / B $6.00 GE 100% / 100% 3800: 4200 / 4000Gm used (wb) (M9) oval gray plates - tripple mica spacers - red lettering
1 6201 / 12AT7-WA / B $6.00 GE 100% / 100% 4000: 4000 / 4000Gm used (ob) (M9) oval gray plates - tripple mica spacers - white lettering - five star
1 6201 / 12AT7-WA $6.00 GE 100% / 110% 4400: 4500 / 4000Gm used (wb) (M9) oval gray plates - tripple mica spacers - white lettering
1 6201 / 12AT7-WC $6.00 GE 105% / 100% 4400: 4400 / 4000Gm used (ob) (M9) oval gray plates - tripple mica spacers - JAN - green lettering
1 6201 / 12AT7-WA $6.00 GE 120% / 100% 4700: 4300 / 4000Gm used (wb) (M9) oval gray plates - tripple mica spacers - white lettering
1 6201 / 12AT7-WA $6.00 GE 115% / 100% 4600: 4200 / 4000Gm used (wb) (M9) oval gray plates - tripple mica spacers - white lettering - five star
1 6201 / 12AT7-WA $6.00 GE 100% / 100% 4500: 5000 / 4000Gm used (wb) (M9) black oval plates - tripple mica spacers - white lettering
1 6201 / 12AT7-WA / B $6.00 GE 105% / 110% 4200: 4400 / 4000Gm used (wb) (M9) oval gray plates - tripple mica spacers - white lettering - five star
1 6201 / 12AT7-WC $6.00 GE 100% / 110% 4100: 4200 / 4000Gm used (wb) (M9) oval gray plates - double stuff mica spacers - green lettering
1 6201 / 12AT7-WC $6.00 GE 100% / 110% 3800: 3900 / 4000Gm used (rb) (M9) oval gray plates - JAN - green lettering
1 6201 / 12AT7-WB $6.00 GE 100% / 100% 4200: 4200 / 4000Gm used (ob) (M9) oval gray plates - white lettering - five star
1 6201 / 12AT7-WA $5.00 GE 90% / 90% 4000: 3900 / 4000Gm used (wb) (M9) oval black plates - tripple mica spacers - white lettering
1 6201 / 12AT7-WA $5.00 GE 90% / 100% 4200: 4400 / 4000Gm used (wb) (M9) oval gray plates - tripple mica spacers - white lettering
1 6201 / 12AT7-WB $5.00 GE 90% / 105% 4000: 4000 / 4000Gm used (wb) (M9) oval gray plates - tripple mica spacers - white lettering
1 6201 / 12AT7-WB $5.00 GE 90% / 100% 3900: 4000 / 4000Gm used (wb) (M9) oval gray plates - tripple mica spacers - white lettering
1 6201 / 12AT7-WB $5.00 GE 110% / 90% 4100: 3800 / 4000Gm used (wb) (M9) oval gray plates - tripple mica spacers - white lettering
1 6201 / 12AT7-WA $4.00 GE 85% / 100% 4000: 4400 / 4000Gm used (wb) (M9) black oval plates - tripple mica spacers - white lettering
1 6201 $7.50 GE 110% / 120% 4400: 4600 / 4000Gm used (wb) (M9) oval gray plates - tripple mica spacers - white lettering
1 6201 $6.00 GE 105% / 110% 4000: 4400 / 4000Gm used (wb) (M9) oval gray plates - double stuff mica spacers - green lettering
1 6201 $6.00 GE 110% / 100% 4500: 4400 / 4000Gm used (wb) (M9) oval gray plates - double stuff mica spacers - green lettering
1 6201 $6.00 GE 105% / 100% 4000: 4000 / 4000Gm used (wb) (M9) oval gray plates - tripple mica spacers - white lettering
1 6201 $6.00 GE 100% / 100% 4000: 4100 / 4000Gm used (wb) (M9) oval gray plates - tripple mica spacers
1 6201 $6.00 GE 100% / 100% 4800: 4800 / 4000Gm used (rb) (M9) oval gray plates - white lettering - five star
1 6201 $5.00 GE 90% / 100% 3900: 4000 / 4000Gm used (wb) (M9) oval gray plates - double stuff mica spacers - white lettering
1 6201 $5.00 GE 115% / 90% 4500: 4000 / 4000Gm used (L) (M9) oval gray plates - tripple mica spacers - white lettering
1 6201 $5.00 GE (Canada) 90% / 115% 4300: 4400 / 4000Gm used (L) (M9) oval gray plates - double stuff mica spacers
1 6201 $5.00 GE 110% / 90% 3600: 3400 / 4000Gm used (ob) (M9) oval gray plates - white lettering - five star - tripple mica
1 6201 $5.00 GE 110% / 90% 4600: 4200 / 4000Gm used (ob) (M9) oval black plates - tripple mica spacers - JAN - white lettering
1 6201 / 12AT7-WA / B $5.00 GE 95% / 90% 4400: 4400 / 4000Gm used (L) (M9) oval gray plates - double stuff mica spacers - red lettering
1 6201 / 12AT7 $5.00 GE for Hewlett Packard 90% / 90% 3500: 3500 / 4000Gm used (rb) (M9) oval gray plates - red lettering
1 6201 / 12AT7 $5.00 GE for Hewlett Packard 90% / 100% 3500: 3700 / 4000Gm used (rb) (M9) oval gray plates - white lettering
1 6201 / 12AT7 $5.00 GE 90% / 100% 4000: 4400 / 4000Gm used (rb) (M9) oval gray plates - white lettering - five star
1 6201 $4.00 GE 85% / 100% 4100: 4600 / 4000Gm used (L) (M9) oval gray plates - double stuff mica spacers
1 6201 $4.00 GE 90% / 85% 4600: 4200 / 4000Gm used (L) (M9) oval gray plates - tripple mica spacers - white lettering - five star
1 6201 / 12AT7-WA $4.00 GE 95% / 85% 4200: 4000 / 4000Gm used (L) (M9) black oval plates - tripple mica spacers - white lettering
1 6201 $10.00 RCA 110% / 110% 4400: 4500 / 4000Gm used (wb) (M9) black oval plates - tripple mica spacers - white lettering
1 6201 $7.50 RCA 130% / 100% 5000: 4000 / 4000Gm used (wb) (M9) black oval plates - tripple mica spacers - white lettering
1 6201 / 12AT7-WA $7.50 RCA 100% / 100% 4800: 4800 / 4000Gm used (wb) (M9) oval black plates - tripple mica spacers - red lettering
1 6201 / 12AT7-WA $7.50 RCA 100% / 100% 3800: 3900 / 4000Gm used (o) (M9) rectangular ribbed black plates - red lettering
1 6201 $6.00 CBS 115% / 105% 4400: 4100 / 4000Gm used (wb) (M9) oval gray plates - tripple mica spacers - red lettering
1 6201 $5.00 unknown 110% / 120% 4400: 4600 / 4000Gm used (wb) (M9) oval gray plates - double stuff mica spacers
1 6201 $4.00 unknown 105% / 105% 4050: 4150 / 4000Gm used (wb) (M9) oval gray plates - tripple mica spacers
1 6201 $3.00 unknown (RCA?) 95% / 110% 4300: 4600 / 4000Gm used (wb) (M9) black oval plates - tripple mica spacers
1 6201 / 12AT7 $3.00 unknown (GE?) 105% / 95% 4200: 4100 / 4000Gm used (L) (M9) oval gray plates - tripple mica spacers
1 6201 $3.00 unknown (GE?) 95% / 125% 4200: 4600 / 4000Gm used (L) (M9) oval gray plates - double stuff mica spacers
1 6201 $3.00 unknown 100% / 100% 4200: 4200 / 4000Gm used (rb) (M9) oval gray plates
1 6679 / 12AT7 $15.00 RCA 110% / 100% 4100: 4000 / 4000Gm NOS (ob) (M9) rectangular gray plates
1 6679 / 12AT7 $10.00 Sylvania 125% / 125% 4500: 4400 / 4000Gm NOS (OB) (M9) rectangular ribbed black plates - yellow lettering
1 6679 / 12AT7 $10.00 GE 110% / 110% 4500: 4400 / 4000Gm NOS (OB) (M9) oval gray plates - white lettering
1 6679 / 12AT7 $10.00 GE 110% / 110% 5000: 5000 / 4000Gm NOS (OB) (M9) oval gray plates - white lettering
1 6679 / 12AT7 $10.00 GE 120% / 120% 4700: 5000 / 4000Gm NOS (OB) (M9) oval gray plates - white lettering
1 6679 / 12AT7 $10.00 GE 120% / 125% 5200: 5200 / 4000Gm NOS (wb) (M9) oval gray plates - red lettering
1 6679 / 12AT7 $5.00 RCA 110% / 90% 4300: 4300 / 4000Gm used (ob) (M9) oval gray plates - red lettering
1 6679 / 12AT7 $6.00 GE 120% / 110% 5000: 4800 / 4000Gm used (rb) (M9) oval gray plates - white lettering
1 6679 / 12AT7 $6.00 GE 110% / 130% 5000: 5500 / 4000Gm used (ob) (M9) oval gray plates - red lettering
1 6679 / 12AT7 $6.00 GE 110% / 110% 4200: 4200 / 4000Gm used (ob) (M9) oval gray plates - red lettering
1 6679 / 12AT7 $4.00 GE 90% / 90% 3900: 4000 / 4000Gm used (ob) (M9) single wing smooth gray plates - red lettinging - Gt Britain
1 6679 / 12AT7 $6.00 Sylvania 110% / 110% 3800: 4200 / 4000Gm used (wb) (M9) rectangular ribbed black plates - green lettering
1 6679 / 12AT7 $4.00 Sylvania 90% / 90% 3500: 3600 / 4000Gm used (L) (M9) rectangular ribbed black plates - green lettering
1 6679 / 12AT7 $3.00 unknown (canada) 100% / 100% 3800: 3800 / 4000Gm used (rb) (M9) oval gray plates
1 6679 / 12AT7 $3.00 Tung-Sol 80% / 90% 2700: 3200 / 4000Gm used (L) (M9) oval black plates

Notes:
(OB) = original box, (rb) = relabeled/replacement box, (wb) = white box, (L) = loose (no box), (pl) = paper label on tube (original or third party)
(H) = tested on Hickok 539A
(ST)=ST Style, (GT)=GT Style, (TT)=Tall Tubular, (M7)=7pin miniature, M9=9pin miniature, (SM)=subminiature, JAN = Military
Emission Strength = Percentage of emission measured on Eico 666 tube tester
(Emission Strength = 100% baseline reference, >80%:good, >60%:fair >40%=diode good).
Gm = Mutual conductance measured on Hickok 533 tube tester; Except (H)=tested on Hickok 539A
(Gm = measured/baseline, measured1:measured2/baseline, measured1:measured2/baseline1:baseline2).


How To Order:

Purchasing our audio tubes is easy.
Just send us an email indicating the tubes (including quantities) you want.
We will let you know the total price including shipping and handling.

Shipping and Handling Information

Contact MDB Ventures
sales@mdbventures.com
or
sales@fourwater.com

Due to the highly volatile nature of the tube business, all Prices are subject to change without notice.


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Contact MDB Ventures
sales@mdbventures.com
or
sales@fourwater.com