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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 12AV7 $7.50 Amperex 120% / 120% 4200: 4800 / 4100Gm NOS (OB) (M9) rectangular gray plates - world logo
1 12AV7 $7.50 RCA 120% / 110% 4600: 4400 / 4100Gm NOS (OB) (M9) rectangular black plates - red letters
1 12AV7 $7.50 RCA 110% / 120% 4100: 4300 / 4100Gm NOS (OB) (M9) rectangular black plates - red letters
1 12AV7 $7.50 RCA 110% / 120% 4100: 4100 / 4100Gm NOS (OB) (M9) rectangular black plates - red letters
1 12AV7 $7.50 RCA 110% / 110% 4300: 4700 / 4100Gm NOS (OB) (M9) rectangular black plates - red letters
1 12AV7 $7.50 RCA 110% / 120% 4200: 4800 / 4100Gm NOS (OB) (M9) oval black plates - white letters
1 12AV7 $7.50 RCA 120% / 120% 4600: 4700 / 4100Gm NOS (OB) (M9) oval black plates - white letters
1 12AV7 $7.50 RCA 110% / 100% 4300: 4100 / 4100Gm NOS (OB) (M9) oval black plates - white letters
1 12AV7 $7.50 Tung-Sol 120% / 120% 4400: 4500 / 4100Gm NOS (OB) (M9) oval gray plates
1 12AV7 $7.50 Tung-Sol 125% / 120% 4500: 4300 / 4100Gm NOS (OB) (M9) oval gray plates
1 12AV7 $7.50 Tung-Sol 100% / 100% 4100: 4100 / 4100Gm NOS (OB) (M9) oval black plates
1 12AV7 $7.50 Tung-Sol 115% / 115% 4300: 4300 / 4100Gm NOS (OB) (M9) oval black plates
1 12AV7 $5.00 GE 110% / 115% 4900: 5100 / 4100Gm NOS (OB) (M9) center shield - rectangular gray plates - white letters
1 12AV7 $5.00 GE 110% / 110% 4100: 4100 / 4100Gm NOS (OB) (M9) center shield - rectangular gray plates - white letters
1 12AV7 $5.00 GE 110% / 105% 4100: 4100 / 4100Gm NOS (OB) (M9) center shield - rectangular gray plates - white letters
1 12AV7 $5.00 GE 120% / 130% 5100: 5600 / 4100Gm NOS (OB) (M9) center shield - rectangular gray plates - white letters
1 12AV7 $5.00 GE 110% / 105% 4200: 4100 / 4100Gm NOS (OB) (M9) center shield - rectangular gray plates - red letters
1 12AV7 $5.00 GE 110% / 110% 4100: 4100 / 4100Gm NOS (OB) (M9) oval black plates - white letters
1 12AV7 $5.00 Sylvania 130% / 120% 4800: 4600 / 4100Gm NOS (OB) (M9) rectangular black plates - yellow letters
1 12AV7 $5.00 Sylvania 110% / 120% 4400: 4600 / 4100Gm NOS (OB) (M9) rectangular black plates - yellow letters
1 12AV7 $5.00 Sylvania 120% / 130% 4300: 4800 / 4100Gm NOS (OB) (M9) oval black plates - yellow letters
1 12AV7 $5.00 Sylvania 120% / 120% 4500: 4800 / 4100Gm NOS (OB) (M9) rectangular black plates - yellow letters
1 12AV7 $5.00 Sylvania 100% / 110% 4200: 4400 / 4100Gm NOS (OB) (M9) rectangular black plates - yellow letters
1 12AV7 $5.00 Sylvania 110% / 130% 4100: 4500 / 4100Gm NOS (OB) (M9) oval gray plates - yellow letters
1 12AV7 $5.00 Sylvania 110% / 130% 4700: 5100 / 4100Gm NOS (OB) (M9) oval gray plates - yellow letters
1 12AV7 $5.00 Sylvania 120% / 120% 4500: 4800 / 4100Gm NOS (OB) (M9) oval gray plates - yellow letters
1 12AV7 $5.00 Sylvania 130% / 110% 5600: 5300 / 4100Gm NOS (OB) (M9) oval gray plates - yellow letters
1 12AV7 $5.00 Sylvania 120% / 140% 5100: 5100 / 4100Gm NOS (OB) (M9) oval gray plates - yellow letters
1 12AV7 $5.00 Sylvania 110% / 110% 4500: 4800 / 4100Gm NOS (OB) (M9) oval gray plates - yellow letters
1 12AV7 $5.00 Sylvania 120% / 120% 4700: 4900 / 4100Gm NOS (OB) (M9) oval gray plates - green letters
1 12AV7 $5.00 Sylvania 130% / 120% 4900: 4100 / 4100Gm NOS (OB) (M9) rectangular black plates - yellow letters
1 12AV7 $5.00 Sylvania 125% / 120% 4200: 4300 / 4100Gm NOS (OB) (M9) oval black plates - yellow letters - torn box flap
1 12AV7 $5.00 Sylvania 110% / 110% 4500: 4200 / 4100Gm NOS (OB) (M9) rectangular black plates - yellow letters
1 12AV7 $5.00 Sylvania 120% / 120% 4500: 4600 / 4100Gm NOS (OB) (M9) oval gray plates - yellow letters
1 12AV7 $5.00 Sylvania 120% / 120% 4200: 4300 / 4100Gm NOS (OB) (M9) rectangular black plates - yellow letters
1 12AV7 $5.00 Sylvania 120% / 120% 4500: 4600 / 4100Gm NOS (OB) (M9) oval black plates - green letters
1 12AV7 $5.00 Raytheon 110% / 110% 4200: 4400 / 4100Gm NOS (OB) (M9) oval black plates
1 12AV7 $5.00 Raytheon 130% / 120% 4500: 4400 / 4100Gm NOS (OB) (M9) oval black plates
1 12AV7 $5.00 Raytheon 110% / 110% 4100: 4500 / 4100Gm NOS (OB) (M9) oval black plates
1 12AV7 $5.00 Raytheon 110% / 120% 4200: 4500 / 4100Gm NOS (OB) (M9) oval black plates - torn box flap
1 12AV7 $5.00 CBS 110% / 120% 4200: 4400 / 4100Gm NOS (OB) (M9) oval black plates - red letters
1 12AV7 $5.00 CBS 110% / 110% 4100: 4400 / 4100Gm NOS (OB) (M9) oval black plates - red letters
1 12AV7 $5.00 CBS 110% / 120% 4400: 4600 / 4100Gm NOS (OB) (M9) oval black plates - red letters
1 12AV7 $5.00 CBS 110% / 110% 4100: 4100 / 4100Gm NOS (OB) (M9) oval black plates - white letters
1 12AV7 $5.00 CBS 110% / 120% 4300: 4400 / 4100Gm NOS (OB) (M9) oval black plates - red letters
1 12AV7 $5.00 CBS 120% / 120% 4500: 4700 / 4100Gm NOS (OB) (M9) oval black plates - red letters
1 12AV7 $5.00 CBS 120% / 120% 4200: 4800 / 4100Gm NOS (OB) (M9) oval black plates - red letters
1 12AV7 $5.00 CBS 120% / 150% 5000: 5000 / 4100Gm NOS (OB) (M9) oval black plates - red letters
1 12AV7 $5.00 CBS 130% / 110% 5000: 4500 / 4100Gm NOS (OB) (M9) oval black plates - white letters
1 12AV7 $5.00 CBS 130% / 120% 4900: 4800 / 4100Gm NOS (OB) (M9) oval black plates - red letters
1 12AV7 $5.00 Westinghouse 150% / 150% 4800: 4600 / 4100Gm NOS (OB) (M9) oval black plates
1 12AV7 $5.00 Westinghouse 120% / 115% 4900: 4400 / 4100Gm NOS (OB) (M9) oval black plates
1 12AV7 $5.00 Westinghouse 120% / 120% 4500: 4500 / 4100Gm NOS (OB) (M9) rectangular gray plates
1 12AV7 $5.00 Zenith 130% / 125% 4600: 4400 / 4100Gm NOS (OB) (M9) rectangular black plates
1 12AV7 $5.00 Admiral 110% / 120% 4100: 4600 / 4100Gm NOS (OB) (M9) rectangular gray plates
1 12AV7 $5.00 Philco 120% / 125% 4200: 4500 / 4100Gm NOS (OB) (M9) oval black plates
1 12AV7 $5.00 Philco 115% / 120% 4200: 4300 / 4100Gm NOS (OB) (M9) oval black plates
1 12AV7 $5.00 Rad-Tel 140% / 125% 5800: 5400 / 4100Gm NOS (OB) (M9) oval black plates
1 12AV7 $5.00 Rad-Tel 130% / 115% 4700: 4600 / 4100Gm NOS (OB) (M9) oval black plates
1 12AV7 $5.00 Dumont 135% / 120% 5000: 4500 / 4100Gm NOS (OB) (M9) oval black plates
1 12AV7 $5.00 Dumont 115% / 110% 4200: 4200 / 4100Gm NOS (OB) (M9) oval black plates
1 12AV7 $4.00 RCA 140% / 140% 4600: 4600 / 4100Gm used (OB) (M9) oval black plates - white letters
1 12AV7 $4.00 RCA 125% / 110% 4300: 3800 / 4100Gm used (OB) (M9) oval black plates - white letters
1 12AV7 $4.00 RCA 115% / 115% 3800: 3800 / 4100Gm used (OB) (M9) oval black plates - white letters
1 12AV7 $4.00 RCA 110% / 110% 3900: 4100 / 4100Gm used (OB) (M9) rectangular black plates - red letters
1 12AV7 $4.00 RCA 130% / 130% 4800: 4500 / 4100Gm used (OB) (M9) rectangular black plates - red letters
1 12AV7 $4.00 RCA 120% / 100% 4200: 4100 / 4100Gm used (OB) (M9) rectangular black plates - red letters
1 12AV7 $4.00 RCA 120% / 100% 4800: 4000 / 4100Gm used (OB) (M9) rectangular black plates - red letters
1 12AV7 $4.00 RCA 100% / 110% 3800: 3900 / 4100Gm used (OB) (M9) oval gray plates - red letters
1 12AV7 $4.00 RCA 115% / 115% 4200: 4200 / 4100Gm used (rb) (M9) oval black plates - red letters
1 12AV7 $4.00 RCA 100% / 110% 4000: 4000 / 4100Gm used (ob) (M9) rectangular black plates - red letters
1 12AV7 $3.00 RCA 140% / 130% 3400: 4100 / 4100Gm used (OB) (M9) rectangular black plates - red letters
1 12AV7 $3.00 RCA 100% / 100% 4100: 4100 / 4100Gm used (OB) (M9) rectangular black plates - red letters
1 12AV7 $3.00 RCA 100% / 110% 4500: 4800 / 4100Gm used (OB) (M9) rectangular black plates
1 12AV7 $3.00 RCA 100% / 110% 3700: 4300 / 4100Gm used (OB) (M9) rectangular black plates - red letters
1 12AV7 $3.00 RCA 100% / 100% 4000: 4300 / 4100Gm used (rb) (M9) rectangular black plates - red letters
1 12AV7 $3.00 RCA 100% / 110% 4000: 4000 / 4100Gm used (rb) (M9) oval black plates - white letters
1 12AV7 $2.50 RCA 120% / 90% 3900: 3300 / 4100Gm used (rb) (M9) rectangular black plates - red letters
1 12AV7 $4.00 Tung-Sol 110% / 100% 4400: 4000 / 4100Gm used (OB) (M9) oval gray plates
1 12AV7 $3.00 Tung-Sol 95% / 100% 3300: 3500 / 4100Gm used (OB) (M9) oval black plates
1 12AV7 $3.00 Tung-Sol 110% / 90% 4100: 3500 / 4100Gm used (OB) (M9) oval black plates
1 12AV7 $3.00 Tung-Sol 95% / 110% 4100: 4400 / 4100Gm used (OB) (M9) oval gray plates
1 12AV7 $3.00 Tung-Sol 90% / 110% 3800: 4100 / 4100Gm used (OB) (M9) oval gray plates
1 12AV7 $3.00 GE 135% / 130% 5200: 4900 / 4100Gm used (ob) (M9) oval black plates - white letters
1 12AV7 $3.00 GE 105% / 105% 3800: 3600 / 4100Gm used (rb) (M9) oval black plates - white letters
1 12AV7 $3.00 GE 100% / 110% 3800: 4100 / 4100Gm used (ob) (M9) center shield - rectangular gray plates - red letters
1 12AV7 $3.00 GE 105% / 105% 3900: 3800 / 4100Gm used (ob) (M9) center shield - rectangular gray plates - white letters
1 12AV7 $3.00 GE 105% / 110% 4000: 4300 / 4100Gm used (ob) (M9) center shield - rectangular gray plates - white letters
1 12AV7 $3.00 GE 105% / 110% 4000: 4100 / 4100Gm used (ob) (M9) oval black plates - white letters
1 12AV7 $3.00 GE 100% / 110% 3600: 3800 / 4100Gm used (ob) (M9) center shield - rectangular gray plates - white letters
1 12AV7 $3.00 GE 100% / 110% 3500: 3800 / 4100Gm used (ob) (M9) center shield - rectangular gray plates - red letters
1 12AV7 $3.00 GE 100% / 100% 4000: 4100 / 4100Gm used (ob) (M9) oval balck plates - white letters
1 12AV7 $3.00 GE 100% / 100% 3400: 3500 / 4100Gm used (ob) (M9) center shield - rectangular gray plates - red letters
1 12AV7 $3.00 GE 100% / 100% 3400: 3400 / 4100Gm used (ob) (M9) center shield - rectangular gray plates - white letters
1 12AV7 $2.50 GE 110% / 90% 4100: 3800 / 4100Gm used (ob) (M9) oval black plates - white letters
1 12AV7 $2.50 GE 90% / 100% 3600: 3700 / 4100Gm used (ob) (M9) center shield - rectangular gray plates - white letters
1 12AV7 $2.50 GE 95% / 105% 4000: 4300 / 4100Gm used (ob) (M9) center shield - rectangular gray plates - white letters
1 12AV7 $2.50 GE 90% / 110% 4000: 4400 / 4100Gm used (ob) (M9) oval black plates - white letters
1 12AV7 $2.50 GE 90% / 100% 4300: 4400 / 4100Gm used (ob) (M9) oval black plates - white letters
1 12AV7 $3.00 Sylvania 100% / 110% 3800: 3800 / 4100Gm used (OB) (M9) oval black plates - green letters
1 12AV7 $3.00 Sylvania 100% / 100% 4100: 4200 / 4100Gm used (OB) (M9) oval black plates - green letters
1 12AV7 $3.00 Sylvania 110% / 120% 4200: 4600 / 4100Gm used (OB) (M9) oval black plates - green letters
1 12AV7 $3.00 Sylvania 110% / 130% 4000: 4600 / 4100Gm used (OB) (M9) oval gray plates - yellow letters
1 12AV7 $3.00 Sylvania 120% / 120% 4800: 4700 / 4100Gm used (OB) (M9) oval black plates - yellow letters
1 12AV7 $3.00 Sylvania 110% / 140% 4000: 4800 / 4100Gm used (OB) (M9) oval black plates - yellow letters
1 12AV7 $3.00 Sylvania 110% / 105% 4100: 3900 / 4100Gm used (OB) (M9) rectangular black plates - yellow letters
1 12AV7 $3.00 Sylvania 120% / 120% 4100: 4100 / 4100Gm used (OB) (M9) rectangular black plates - yellow letters
1 12AV7 $3.00 Sylvania 100% / 105% 4000: 4300 / 4100Gm used (OB) (M9) rectangular black plates - yellow letters
1 12AV7 $3.00 Sylvania 100% / 110% 4000: 4400 / 4100Gm used (OB) (M9) rectangular black plates - yellow letters
1 12AV7 $3.00 Sylvania 100% / 110% 3900: 4100 / 4100Gm used (OB) (M9) rectangular black plates - yellow letters
1 12AV7 $3.00 Sylvania 110% / 115% 4100: 4200 / 4100Gm used (OB) (M9) rectangular black plates - yellow letters
1 12AV7 $3.00 Sylvania 100% / 100% 4100: 4100 / 4100Gm used (OB) (M9) rectangular black plates - yellow letters
1 12AV7 $3.00 Sylvania 110% / 110% 4200: 3900 / 4100Gm used (OB) (M9) oval black plates - green letters
1 12AV7 $2.50 Sylvania 110% / 90% 4400: 3500 / 4100Gm used (OB) (M9) oval black plates - green letters
1 12AV7 $2.50 Sylvania 90% / 100% 3700: 3800 / 4100Gm used (OB) (M9) rectangular black plates - yellow letters
1 12AV7 $2.50 Sylvania 90% / 120% 4100: 4300 / 4100Gm used (OB) (M9) oval black plates - green letters
1 12AV7 $2.50 Sylvania 95% / 95% 4400: 4200 / 4100Gm used (OB) (M9) rectangular black plates - yellow letters
1 12AV7 $2.50 Sylvania 110% / 95% 4500: 4000 / 4100Gm used (OB) (M9) oval black plates - green letters
1 12AV7 $5.00 CBS 100% / 110% 4000: 4300 / 4100Gm used (OB) (M9) oval black plates - red letters
1 12AV7 $5.00 CBS 100% / 100% 4200: 4400 / 4100Gm used (OB) (M9) oval black plates - white letters
1 12AV7 $5.00 CBS 90% / 90% 3500: 3600 / 4100Gm used (ob) (M9) oval black plates - white letters
1 12AV7 $5.00 CBS 95% / 90% 3500: 3400 / 4100Gm used (OB) (M9) oval black plates - red letters
1 12AV7 $5.00 CBS 110% / 120% 4000: 5000 / 4100Gm used (OB) (M9) oval black plates - red letters
1 12AV7 $5.00 CBS 100% / 110% 3900: 4100 / 4100Gm used (OB) (M9) oval black plates - red letters
1 12AV7 $4.00 National Union 115% / 110% 4800: 4800 / 4100Gm used (wb) (M9) oval black plates
1 12AV7 $5.00 Sonic 120% / 120% 4500: 4500 / 4100Gm used (wb) (M9) tall oval gray plates plates - tripple mica
1 12AV7 $5.00 Raytheon 130% / 110% 4600: 3800 / 4100Gm used (OB) (M9) tall rectangular black plates - tripple mica
1 12AV7 $4.00 Raytheon 110% / 120% 4000: 3800 / 4100Gm used (OB) (M9) rectangular black plates
1 12AV7 $4.00 Raytheon 100% / 90% 3800: 3300 / 4100Gm used (OB) (M9) oval black plates
1 12AV7 $3.00 EICO 130% / 120% 5000: 4600 / 4100Gm used (rb) (M9) oval gray plates
1 12AV7 $3.00 EICO 130% / 140% 5200: 5500 / 4100Gm used (wb) (M9) oval black plates
1 12AV7 $3.00 National Union 100% / 110% 4200: 4200 / 4100Gm used (rb) (M9) oval black plates
1 12AV7 $3.00 Lansdale 120% / 100% 4600: 4000 / 4100Gm used (ob) (M9) oval black plates
1 12AV7 $2.50 Philco 135% / 90% 5000: 4000 / 4100Gm used (OB) (M9) oval black plates
1 12AV7 $2.50 Rad-Tel 110% / 90% 4500: 4000 / 4100Gm used (OB) (M9) oval black plates
1 12AV7 $2.50 Rad-Tel 120% / 100% 4600: 3800 / 4100Gm used (rb) (M9) oval gray plates
1 12AV7 $2.50 Westinghouse 90% / 105% 3500: 3700 / 4100Gm used (OB) (M9) oval black plates
1 12AV7 $2.50 unknown 100% / 110% 3800: 4200 / 4100Gm used (rb) (M9) oval black plates
1 12AV7 $2.50 unknown 100% / 100% 4000: 3800 / 4100Gm used (rb) (M9) oval black plates
1 12AV7 $2.50 unknown 120% / 125% 4400: 4400 / 4100Gm used (rb) (M9) oval black plates - JAN
1 12AV7 $2.50 unknown 110% / 100% 4400: 4300 / 4100Gm used (rb) (M9) oval black plates
1 12AV7 $2.00 unknown 90% / 105% 4400: 4600 / 4100Gm used (rb) (M9) oval black plates
1 12AV7 $2.00 unknown 90% / 90% 3400: 3300 / 4100Gm used (rb) (M9) oval black plates
1 12AY7 $40.00 RCA 110% / 120% 1500: 1650 / 1250Gm NOS (ob) (M9) winged square gray plates - red lettering
1 12AY7 $18.00 Raytheon 110% / 110% 1250: 1400 / 1250Gm used (wb) (M9) box gray plates
1 12AY7 $18.00 GE 120% / 110% 1450: 1500 / 1250Gm used (wb) (M9) gray box plates
1 12AY7 $18.00 GE 110% / 110% 1350: 1450 / 1250Gm used (wb) (M9) gray box plates
1 12AY7 $18.00 GE 120% / 140% 1400: 1650 / 1250Gm used (wb) (M9) gray box plates - white lettering
1 12AY7 $18.00 GE 110% / 110% 1350: 1350 / 1250Gm used (wb) (M9) winged square gray plates - white lettering
1 12AY7 $18.00 GE 110% / 110% 1200: 1200 / 1250Gm used (rb) (M9) winged square gray plates
1 12AY7 $15.00 Sylvania 110% / 115% 1500: 1650 / 1250Gm used (rb) (M9) box gray plates - green lettering
1 12AY7 $10.00 Sylvania 110% / 110% 1450: 1500 / 1250Gm used (rb) (M9) winged square gray plates - yellow lettering
1 12AY7 $7.50 unknown 140% / 120% 1900: 1700 / 1250Gm used (L) (M9) gray box plates
1 12AZ7A $10.00 Raytheon 150% / 150% 5500: 6250 / 4000Gm used (wb) (M9) rectangular black plates - tall bottle - tripple mica
1 12AZ7 $12.00 Tung-Sol 120% / 120% 4500: 4800 / 4000Gm NOS (OB) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7A $10.00 Tung-Sol 100% / 110% 4000: 4400 / 4000Gm NOS (OB) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7A $10.00 RCA 110% / 115% 4000: 4200 / 4000Gm NOS (OB) (M9) rectangular black plates - Grid "C" clips - red letters (12AT7 with higher heater current)
1 12AZ7A $10.00 RCA 110% / 110% 3900: 4000 / 4000Gm NOS (OB) (M9) rectangular black plates - red letters (12AT7 with higher heater current)
1 12AZ7A $10.00 RCA 110% / 120%4400: 4400 / 4000Gm NOS (OB) (M9) rectangular black plates - red letters (12AT7 with higher heater current)
1 12AZ7A $10.00 RCA 120% / 115% 4300: 400 / 4000Gm NOS (OB) (M9) rectangular black plates - red letters (12AT7 with higher heater current)
1 12AZ7A $10.00 RCA 120% / 120% 4000: 4200 / 4000Gm NOS (OB) (M9) rectangular black plates - red letters (12AT7 with higher heater current)
1 12AZ7A $10.00 RCA 120% / 140% 4500: 4900 / 4000Gm NOS (OB) (M9) rectangular black plates - red letters (12AT7 with higher heater current)
1 12AZ7A $8.00 RCA 100% / 100% 4000: 4000 / 4000Gm NOS (OB) (M9) rectangular gray plates - red letters (12AT7 with higher heater current)
1 12AZ7 $8.00 Philco 115% / 115% 5000: 5000 / 4000Gm NOS (OB) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7 $8.00 Philco 110% / 115% 4700: 4600 / 4000Gm NOS (OB) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7 $6.00 Philco 110% / 100% 4200: 4000 / 4000Gm NOS (OB) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7A $8.00 Raytheon 140% / 120% 5000: 4700 / 4000Gm NOS (OB) (M9) oval gray plates (12AT7 with higher heater current)
1 12AZ7 $8.00 Raytheon 110% / 120% 4400: 4600 / 4000Gm NOS (OB) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7 $8.00 Raytheon 115% / 115% 4600: 5000 / 4000Gm NOS (OB) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7 $8.00 Raytheon 110% / 115% 4600: 4600 / 4000Gm NOS (OB) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7A $6.00 Raytheon 105% / 105% 4000: 4200 / 4000Gm NOS (OB) (M9) oval gray plates (12AT7 with higher heater current)
1 12AZ7 $6.00 Raytheon 100% / 110% 4000: 4500 / 4000Gm NOS (OB) (M9) oval gray plates (12AT7 with higher heater current)
1 12AZ7A $8.00 Sylvania 110% / 110% 4300: 4400 / 4000Gm NOS (OB) (M9) rectangular black plates - yellow lettering (12AT7 with higher heater current)
1 12AZ7A $8.00 Sylvania 110% / 120% 4700: 5000 / 4000Gm NOS (OB) (M9) rectangular black plates - yellow lettering (12AT7 with higher heater current)
1 12AZ7A $8.00 Sylvania 120% / 130% 4700: 4500 / 4000Gm NOS (OB) (M9) rectangular black plates - yellow lettering (12AT7 with higher heater current)
1 12AZ7A $8.00 Sylvania 110% / 115% 4000: 4000 / 4000Gm NOS (OB) (M9) rectangular black plates - yellow lettering (12AT7 with higher heater current)
1 12AZ7 $6.00 Sylvania 105% / 115% 4300: 4500 / 4000Gm NOS (OB) (M9) oval black plates - yellow lettering (12AT7 with higher heater current)
1 12AZ7 $6.00 Sylvania 100% / 115% 4200: 4200 / 4000Gm NOS (OB) (M9) oval black plates - green lettering (12AT7 with higher heater current)
1 12AZ7A $8.00 GE 120% / 130% 4500: 4800 / 4000Gm NOS (OB) (M9) rectangular gray plates - white letters (12AT7 with higher heater current)
1 12AZ7A $8.00 GE 140% / 140% 5200: 5600 / 4000Gm NOS (OB) (M9) rectangular gray plates - white letters (12AT7 with higher heater current)
1 12AZ7A $8.00 GE 110% / 120% 4400: 4500 / 4000Gm NOS (OB) (M9) oval black plates - white letters (12AT7 with higher heater current)
1 12AZ7A $6.00 GE 105% / 115% 3900: 4200 / 4000Gm NOS (OB) (M9) rectangular gray plates - white letters (12AT7 with higher heater current)
1 12AZ7 $6.00 GE 105% / 115% 4400: 4300 / 4000Gm NOS (OB) (M9) oval black plates - white letters - torn box flap (12AT7 with higher heater current)
1 12AZ7A $6.00 Triad 100% / 105% 3800: 4000 / 4000Gm NOS (OB) (M9) rectangular gray plates (12AT7 with higher heater current)
1 12AZ7A $6.00 Triad 100% / 115% 4100: 4400 / 4000Gm NOS (OB) (M9) rectangular gray plates (12AT7 with higher heater current)
1 12AZ7A $6.00 Lindal 110% / 100% 4000: 4000 / 4000Gm NOS (OB) (M9) rectangular gray plates (12AT7 with higher heater current)
1 12AZ7 $6.00 CBS 100% / 120% 4200: 4500 / 4000Gm NOS (OB) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7 $6.00 CBS 110% / 100% 4000: 3800 / 4000Gm NOS (OB) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7 $5.00 Tung-Sol 110% / 120% 3200: 3800 / 4000Gm used (rb) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7 $3.00 Tung-Sol 100% / 90% 3400: 3000 / 4000Gm used (ob) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7A $3.00 Philco 110% / 120% 3700: 3700 / 4000Gm used (rb) (M9) rectangular gray plates (12AT7 with higher heater current)
1 12AZ7 $3.00 Philco 100% / 120% 4200: 4500 / 4000Gm used (rb) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7 $3.00 Philco 115% / 105% 4400: 3900 / 4000Gm used (rb) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7 $2.00 Philco 90% / 120% 4000: 4600 / 4000Gm used (rb) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7 $3.00 Raytheon 110% / 105% 4200: 4100 / 4000Gm used (rb) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7 $3.00 Raytheon 110% / 120% 5000: 5000 / 4000Gm used (rb) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7 $3.00 Raytheon 110% / 120% 4000: 4400 / 4000Gm used (wb) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7A $3.00 Raytheon 100% / 110% 4000: 4000 / 4000Gm used (rb) (M9) rectangular gray plates (12AT7 with higher heater current)
1 12AZ7A $3.00 Emerson 110% / 140% 4700: 5000 / 4000Gm used (OB) (M9) rectangular black plates (12AT7 with higher heater current)
1 12AZ7A $3.00 Rogers 120% / 110% 4600: 4600 / 4000Gm used (rb) (M9) oval gray plates (12AT7 with higher heater current)
1 12AZ7 $3.00 Guaranteed Electron Tube 110% / 100% 3600: 3600 / 4000Gm used (OB) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7A $2.00 Silvertone 100% / 95% 3600: 3200 / 4000Gm used (rb) (M9) rectangular gray plates - grid "C" clips (12AT7 with higher heater current)
1 12AZ7A $3.00 GE 100% / 105% 3800: 4000 / 4000Gm used (ob) (M9) rectangular gray plates (12AT7 with higher heater current)
1 12AZ7A $3.00 GE 130% / 120% 4800: 4200 / 4000Gm used (rb) (M9) rectangular gray plates (12AT7 with higher heater current)
1 12AZ7A $3.00 GE 110% / 110% 4000: 4000 / 4000Gm used (OB) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7A $3.00 GE 120% / 115% 4000: 4000 / 4000Gm used (rb) (M9) rectangular black plates (12AT7 with higher heater current)
1 12AZ7A $2.00 GE 110% / 95% 4300: 4000 / 4000Gm used (ob) (M9) rectangular gray plates (12AT7 with higher heater current)
1 12AZ7A $2.00 GE 105% / 90% 4200: 4000 / 4000Gm used (ob) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7 $2.00 GE 95% / 110% 3900: 4100 / 4000Gm used (rb) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7 $2.00 GE 90% / 90% 3600: 3800 / 4000Gm used (rb) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7 $2.00 GE 105% / 95% 3500: 3200 / 4000Gm used (rb) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7 $2.00 GE 120% / 90% 4500: 4200 / 4000Gm used (ob) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7A $3.00 RCA for Eico 130% / 100% 4200: 3400 / 4000Gm used (rb) (M9) rectangular black plates - red letters - grid "C" clips (12AT7 with higher heater current)
1 12AZ7A $3.00 RCA for Eico 100% / 110% 3400: 3700 / 4000Gm used (rb) (M9) rectangular black plates - red letters - grid "C" clips (12AT7 with higher heater current)
1 12AZ7A $3.00 RCA 100% / 100% 3800: 3800 / 4000Gm used (rb) (M9) rectangular black plates - red letters (12AT7 with higher heater current)
1 12AZ7A $3.00 RCA 130% / 125% 4500: 3800 / 4000Gm used (rb) (M9) rectangular gray plates - red letters - grid "C" clips (12AT7 with higher heater current)
1 12AZ7A $3.00 RCA 100% / 140%4000: 4900 / 4000Gm used (ob) (M9) rectangular gray plates - red letters - grid "C" clips (12AT7 with higher heater current)
1 12AZ7A $3.00 RCA 120% / 115% 4600: 4200 / 4000Gm used (rb) (M9) rectangular black plates - red letters (12AT7 with higher heater current)
1 12AZ7A $3.00 RCA 105% / 110% 3600: 3500 / 4000Gm used (rb) (M9) rectangular black plates - red letters (12AT7 with higher heater current)
1 12AZ7A $3.00 RCA 130% / 130% 4500: 3900 / 4000Gm used (wb) (M9) rectangular gray plates - red letters - grid 'c' clip (12AT7 with higher heater current)
1 12AZ7 $3.00 RCA for Globe Electronics 100% / 120% 3800: 4100 / 4000Gm used (wb) (M9) oval black plates - red letters (12AT7 with higher heater current)
1 12AZ7 $3.00 RCA 120% / 110% 4200: 4000 / 4000Gm used (rb) (M9) oval black plates - white letters (12AT7 with higher heater current)
1 12AZ7 $3.00 RCA 110% / 110% 3600: 3600 / 4000Gm used (rb) (M9) oval black plates - white letters (12AT7 with higher heater current)
1 12AZ7A $2.00 RCA 105% / 90% 3200: 3000 / 4000Gm used (rb) (M9) rectangular black plates - red letters (12AT7 with higher heater current)
1 12AZ7A $2.00 RCA 100% / 95% 4000: 3800 / 4000Gm used (ob) (M9) rectangular gray plates - red letters - grid "C" clips (12AT7 with higher heater current)
1 12AZ7A $2.00 RCA 120% / 90% 4200: 3800 / 4000Gm used (ob) (M9) rectangular black plates - red letters - grid "C" clips (12AT7 with higher heater current)
1 12AZ7A $3.00 Sylvania 110% / 100% 3900: 3600 / 4000Gm used (ob) (M9) rectangular black plates - yellow letters (12AT7 with higher heater current)
1 12AZ7A $3.00 Sylvania 120% / 110% 4800: 4600 / 4000Gm used (ob) (M9) rectangular black plates - yellow letters (12AT7 with higher heater current)
1 12AZ7A $3.00 Sylvania 105% / 105% 3800: 3800 / 4000Gm used (wb) (M9) oval black plates - yellow letters (12AT7 with higher heater current)
1 12AZ7A $3.00 Sylvania 105% / 110% 4200: 4300 / 4000Gm used (wb) (M9) oval black plates - yellow letters (12AT7 with higher heater current)
1 12AZ7A $3.00 Sylvania 130% / 105% 5000: 4800 / 4000Gm used (ob) (M9) rectangular black plates - red letters (12AT7 with higher heater current)
1 12AZ7A $2.00 Sylvania 90% / 110% 3800: 4100 / 4000Gm used (ob) (M9) oval gray plates - red letters (12AT7 with higher heater current)
1 12AZ7A $2.00 Sylvania 90% / 130% 4600: 4800 / 4000Gm used (ob) (M9) rectangular black plates - red letters (12AT7 with higher heater current)
1 12AZ7 $2.00 Sylvania 130% / 95% 4200: 4100 / 4000Gm used (ob) (M9) oval black plates - yellow letters (12AT7 with higher heater current)
1 12AZ7A $2.50 unknown 130% / 130% 5200: 5500 / 4000Gm used (rb) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7A $2.50 unknown 110% / 120% 4200: 4200 / 4000Gm used (rb) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7A $2.50 unknown 110% / 110% 4200: 4100 / 4000Gm used (rb) (M9) oval gray plates (12AT7 with higher heater current)
1 12AZ7 $2.50 unknown 120% / 100% 4600: 4200 / 4000Gm used (rb) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7 $2.50 unknown 110% / 110% 4100: 4200 / 4000Gm used (rb) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7 $2.50 unknown 110% / 110% 4200: 4200 / 4000Gm used (rb) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7A $1.00 Triad 95% / 85% 3800: 3700 / 4000Gm used (L) (M9) rectangular gray plates (12AT7 with higher heater current)
1 12AZ7A $1.00 RCA 85% / 95% 3400: 3500 / 4000Gm used (L) (M9) rectangular gray plates - red letters (12AT7 with higher heater current)
1 12AZ7A $1.00 RCA 80% / 90% 3800: 4000 / 4000Gm used (rb) (M9) rectangular black plates - red letters (12AT7 with higher heater current)
1 12AZ7 $1.00 RCA 80% / 90% 4000: 4200 / 4000Gm used (ob) (M9) oval black plates - red letters (12AT7 with higher heater current)
1 12AZ7 $1.00 Sears 90% / 90% 3600: 3000 / 4000Gm used (L) (M9) rectangular gray plates (12AT7 with higher heater current)
1 12AZ7 $1.00 RCA 85% / 110% 2800: 3200 / 4000Gm used (L) (M9) oval black plates - red letters (12AT7 with higher heater current)
1 12AZ7 $1.00 Philco 90% / 85% 3000: 3100 / 4000Gm used (L) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7 $1.00 Philco 85% / 85% 2800: 2800 / 4000Gm used (L) (M9) oval balck plates (12AT7 with higher heater current)
1 12AZ7 $1.00 unknown 90% / 85% 3000: 3200 / 4000Gm used (L) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7 $1.00 unknown 120% / 85% 3800: 3200 / 4000Gm used (L) (M9) oval black plates (12AT7 with higher heater current)
1 12AZ7 $1.00 unknown 85% / 90% 2800: 2900 / 4000Gm used (L) (M9) oval black plates (12AT7 with higher heater current)
1 12DT8 $12.00 Tung-Sol 130% / 110% 5000: 4800 / 4000Gm NOS (OB) (M9) oval black plates (12AT7 with shield)
1 12DT8 $10.00 RCA 115% / 110% 4700: 4600 / 4000Gm NOS (OB) (M9) oval black plates (12AT7 with shield)
1 12DT8 $10.00 RCA 125% / 140% 5500: 5600 / 4000Gm NOS (OB) (M9) rectangular gray plates (12AT7 with shield)
1 12DT8 $10.00 RCA 125% / 125% 5400: 5200 / 4000Gm NOS (OB) (M9) rectangular gray plates (12AT7 with shield)
1 12DT8 $10.00 RCA 120% / 135% 5700: 6000 / 4000Gm NOS (OB) (M9) rectangular gray plates (12AT7 with shield)
1 12DT8 $10.00 Magnavox 120% / 115% 5000: 5000 / 4000Gm NOS (OB) (M9) oval gray plates (12AT7 with shield)
1 12DT8 $9.00 Sylvania 120% / 120% 5400: 5100 / 4000Gm NOS (OB) (M9) rectangular black plates - yellow letters (12AT7 with shield)
1 12DT8 $9.00 Sylvania 120% / 125% 5000: 5600 / 4000Gm NOS (OB) (M9) rectangular black plates - yellow letters - worn box (12AT7 with shield)
1 12DT8 $9.00 Sylvania 120% / 120% 4800: 4700 / 4000Gm NOS (OB) (M9) rectangular black plates - yellow letters (12AT7 with shield)
1 12DT8 $9.00 Sylvania 10% / 115% 5000: 5100 / 4000Gm NOS (OB) (M9) rectangular black plates - yellow letters (12AT7 with shield)
1 12DT8 $9.00 Sylvania 135% / 140% 6000: 6000 / 4000Gm NOS (OB) (M9) rectangular black plates - yellow letters (12AT7 with shield)
1 12DT8 $9.00 Sylvania 120% / 120% 5200: 5300 / 4000Gm NOS (OB) (M9) rectangular black plates - yellow letters (12AT7 with shield)
1 12DT8 $9.00 Zenith 120% / 110% 5400: 5000 / 4000Gm NOS (OB) (M9) rectangular black plates (12AT7 with shield)
1 12DT8 $9.00 Zenith 110% / 110% 4900: 4800 / 4000Gm NOS (OB) (M9) oval gray plates (12AT7 with shield)
1 12DT8 $9.00 GE 100% / 100% 5500: 5000 / 4000Gm NOS (OB) (M9) oval gray plates (12AT7 with shield)
1 12DT8 $9.00 GE 100% / 100% 5200: 5000 / 4000Gm NOS (OB) (M9) oval gray plates (12AT7 with shield)
1 12DT8 $9.00 GE 120% / 100% 5200: 4800 / 4000Gm NOS (OB) (M9) oval gray plates (12AT7 with shield)
1 12DT8 $9.00 GE 100% / 120% 4800: 5200 / 4000Gm NOS (OB) (M9) oval gray plates (12AT7 with shield)
1 12DT8 $5.00 Conn 120% / 140% 5000: 5400 / 4000Gm used (rb) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 125% / 135% 5400: 5500 / 4000Gm used (rb) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 110% / 150% 5500: 6000 / 4000Gm used (rb) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 120% / 120% 5000: 5100 / 4000Gm used (rb) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 125% / 130% 5400: 5600 / 4000Gm used (rb) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 110% / 115% 4600: 4600 / 4000Gm used (rb) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 130% / 130% 5400: 5200 / 4000Gm used (rb) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 100% / 130% 4800: 5100 / 4000Gm used (rb) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 100% / 120% 5000: 5200 / 4000Gm used (rb) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 115% / 135% 5000: 5400 / 4000Gm used (rb) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 RCA 110% / 110% 4400: 5000 / 4000Gm used (rb) (M9) rectangular gray plates (12AT7 with shield)
1 12DT8 $5.00 RCA 110% / 130% 4400: 5200 / 4000Gm used (rb) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 RCA 125% / 130% 5200: 5200 / 4000Gm used (rb) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Sylvania 100% / 110% 4400: 4900 / 4000Gm used (rb) (M9) retangular black plates - yellow letters (12AT7 with shield)
1 12DT8 $5.00 Sylvania 135% / 115% 5000: 4800 / 4000Gm used (rb) (M9) retangular gray plates - yellow letters (12AT7 with shield)
1 12DT8 $5.00 Sylvania 120% / 110% 5200: 5000 / 4000Gm used (rb) (M9) retangular black plates - yellow letters (12AT7 with shield)
1 12DT8 $5.00 Sylvania 130% / 140% 5500: 5800 / 4000Gm used (rb) (M9) retangular black plates - yellow letters (12AT7 with shield)
1 12DT8 $5.00 Zenith 110% / 115% 5000: 5300 / 4000Gm used (rb) (M9) oval gray plates (12AT7 with shield)
1 12DT8 $5.00 Zenith 110% / 110% 4200: 4300 / 4000Gm used (rb) (M9) oval gray plates (12AT7 with shield)
1 12DT8 $5.00 Tung-Sol 120% / 120% 4600: 4600 / 4000Gm used (rb) (M9) oval gray plates (12AT7 with shield)
1 12DT8 $5.00 GE 105% / 120% 4700: 5100 / 4000Gm used (ob) (M9) oval gray plates (12AT7 with shield)
1 12DT8 $5.00 GE 100% / 100% 4600: 4400 / 4000Gm used (rb) (M9) oval gray plates (12AT7 with shield)
1 12DT8 $5.00 Dumont 115% / 125% 5100: 5300 / 4000Gm used (rb) (M9) rectangular black plates (12AT7 with shield)
1 12DT8 $5.00 Admiral 115% / 110% 5100: 5100 / 4000Gm used (rb) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Hitachi 105% / 105% 4200: 4200 / 4000Gm used (rb) (M9) oval gray plates (12AT7 with shield)
1 12DT8 $5.00 E-MET (Japan) 120% / 110% 4600: 4500 / 4000Gm used (rb) (M9) oval gray plates (12AT7 with shield)
1 12DT8 $5.00 E-MET (Japan) 120% / 120% 4600: 4400 / 4000Gm used (rb) (M9) oval gray plates (12AT7 with shield)
1 12DT8 $5.00 Conn 110% / 120% 5100: 5200 / 4000Gm used (L) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 125% / 105% 5400: 4700 / 4000Gm used (L) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 125% / 135% 5800: 5800 / 4000Gm used (L) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 125% / 130% 5200: 5500 / 4000Gm used (L) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 120% / 110% 5000: 5000 / 4000Gm used (L) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 120% / 120% 5200: 5400 / 4000Gm used (L) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 125% / 105% 5400: 5200 / 4000Gm used (L) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 120% / 135% 5700: 5700 / 4000Gm used (L) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 125% / 105% 5200: 4800 / 4000Gm used (L) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 125% / 120% 5000: 4900 / 4000Gm used (L) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 130% / 125% 5500: 5200 / 4000Gm used (L) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 100% / 130% 4600: 5600 / 4000Gm used (L) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 120% / 120% 5200: 5400 / 4000Gm used (L) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 110% / 130% 4800: 5500 / 4000Gm used (L) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 120% / 110% 5200: 4800 / 4000Gm used (L) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 100% / 140% 4800: 5400 / 4000Gm used (L) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 125% / 125% 5200: 5500 / 4000Gm used (L) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 130% / 120% 5500: 5400 / 4000Gm used (L) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 110% / 115% 4600: 4600 / 4000Gm used (L) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 120% / 115% 5400: 5000 / 4000Gm used (L) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 120% / 135% 5400: 5800 / 4000Gm used (L) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Conn 115% / 115% 5000: 5000 / 4000Gm used (L) (M9) oval black plates (12AT7 with shield)
1 12DT8 $5.00 Zenith 100% / 110% 3800: 4000 / 4000Gm used (L) (M9) rectangular gray plates (12AT7 with shield)
1 12DT8 $5.00 Ten 120% / 105% 4600: 4400 / 4000Gm used (L) (M9) oval gray plates (12AT7 with shield)
1 12DT8 $5.00 Hitachi 110% / 110% 4400: 4500 / 4000Gm used (L) (M9) oval gray plates (12AT7 with shield)
1 12DT8 $4.00 unknown 125% / 120% 5000: 4900 / 4000Gm used (L) (M9) oval black plates (12AT7 with shield)
1 12DT8 $4.00 unknown 110% / 120% 4000: 4000 / 4000Gm used (L) (M9) oval gray plates (12AT7 with shield)
1 12DT8 $2.00 Zenith 95% / 110% 3400: 3800 / 4000Gm used (rb) (M9) oval gray plates (12AT7 with shield)
1 12DT8 $2.00 Magnavox 100% / 90% 5000: 5000 / 4000Gm used (rb) (M9) rectangular gray plates (12AT7 with shield)
1 12DT8 $2.00 unknown 90% / 95% 3800: 4000 / 4000Gm used (rb) (M9) oval black plates (12AT7 with shield)
1 7247 $20.00 GE 140% / 130% 1400 / 1250: 2500 / 2200Gm NOS (OB) (M9) square gray plates (12DW7) - white lettering
1 7247 $20.00 GE 140% / 140% 1300 / 1250: 2650 / 2200Gm NOS (OB) (M9) square gray plates (12DW7) - white lettering
1 7247 $10.00 GE 110% / 110% 900 / 1250: 2200 / 2200Gm used good (OB) (M9) square gray plates (12DW7) - white lettering
1 7247 $10.00 GE 110% / 120% 900 / 1250: 1800 / 2200Gm used good (OB) (M9) square gray plates (12DW7) - white lettering
1 7247 $2.00 GE 110% / 70% 1400 / 1250: 950 / 2200Gm used fair (OB) (M9) square gray plates (12DW7) - white lettering
1 17C9 $5.00 Magnavox 140% / 140% 120 / 120 dmc NOS (OB) (M9) ---
1 17C9 $5.00 Magnavox 130% / 140% 120 / 120 dmc NOS (OB) (M9) ---
1 17C9 $5.00 RCA 130% / 135% 110 / 110 dmc NOS (OB) (M9) red lettering
1 17C9 $5.00 Sylvania 150% / 140% 110 / 110 dmc NOS (OB) (M9) yellow lettering
1 17C9 $5.00 GE 140% / 135% 120 / 100 dmc NOS (OB) (M9) ---
1 17C9 $5.00 Tung-Sol 140% / 140% 110 / 110 dmc NOS (OB) (M9) torn box flap
1 17C9 $5.00 Silvertone 130% / 130% 90 / 100 dmc used (rb) (M9) ---
1 17C9 $5.00 Arvin 130% / 140% 90 / 100 dmc used (rb) (M9) ---
1 17C9 $5.00 Sylvania 110% / 140% 60 / 90 dmc used (OB) (M9) yellow lettering
1 EF83 / 6BK8 $10.00 Valvo 110% --- used (wb) (M9) ---
1 18RAL1 $3.00 Sylvania 110% / 120% 90 / 90 dmc NOS (OB) (M9) ---
1 18RAL1 $3.00 Raytheon 120% / 120% 100 / 90 dmc NOS (OB) (M9) ---

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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sales@mdbventures.com
or
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