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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 GB-6005 / 6AQ5 $10.00 Sylvania 130% 5200 / 4100Gm NOS (OB) gold brand - grid 'c' clip
1 GB-6005 / 6AQ5 $10.00 Sylvania 130% 5000 / 4100Gm NOS (OB) gold brand - grid 'c' clip
1 GB-6005 / 6AQ5 $10.00 Sylvania 130% 4800 / 4100Gm NOS (OB) gold brand - grid 'c' clip
1 GB-6005 / 6AQ5 $10.00 Sylvania 130% 5300 / 4100Gm NOS (OB) gold brand - grid 'c' clip
1 GB-6005 / 6AQ5 $10.00 Sylvania 130% 5500 / 4100Gm NOS (OB) gold brand - grid 'c' clip
1 GB-6005 / 6AQ5 $10.00 Sylvania 130% 5200 / 4100Gm NOS (OB) gold brand - grid 'c' clip
1 GB-6005 / 6AQ5 $10.00 Sylvania 130% 5300 / 4100Gm NOS (OB) gold brand - grid 'c' clip
1 GB-6005 / 6AQ5 $10.00 Sylvania 130% 5200 / 4100Gm NOS (OB) gold brand - grid 'c' clip
1 GB-6005 / 6AQ5 $10.00 Sylvania 130% 4600 / 4100Gm NOS (OB) gold brand - grid 'c' clip
1 GB-6005 / 6AQ5 $10.00 Sylvania 120% 5100 / 4100Gm NOS (OB) gold brand - grid 'c' clip
1 6AQ5A / 6HG5 $6.00 Amperex 125% 5000 / 4100Gm NOS (wb) grid 'c' clip - world logo
1 6BM5 / 6AQ5A $8.00 Triad 130% 5200 / 4100Gm NOS (OB) grid 'c' clips
1 6AQ5A $6.00 RCA 120% 5000 / 4100Gm NOS (OB) red lettering
1 6AQ5A $6.00 RCA 120% 4800 / 4100Gm NOS (OB) red lettering
1 6AQ5A $6.00 RCA 110% 5200 / 4100Gm NOS (OB) red lettering
1 6AQ5A $6.00 RCA 110% 4900 / 4100Gm NOS (OB) red lettering
1 6AQ5A $6.00 RCA 110% 5000 / 4100Gm NOS (OB) red lettering
1 6AQ5A $6.00 RCA 110% 5200 / 4100Gm NOS (OB) red lettering
1 6AQ5A $6.00 RCA 115% 4800 / 4100Gm NOS (OB) red lettering
1 6AQ5A $6.00 RCA 110% 5200 / 4100Gm NOS (OB) red lettering
1 6AQ5A $6.00 RCA 110% 4700 / 4100Gm NOS (OB) red lettering
1 6AQ5A $6.00 RCA 110% 5000 / 4100Gm NOS (OB) red lettering
1 6AQ5A $6.00 RCA 110% 5000 / 4100Gm NOS (OB) red lettering
1 6AQ5A $6.00 RCA 120% 4700 / 4100Gm NOS (OB) red lettering
1 6AQ5A $6.00 RCA 110% 5500 / 4100Gm NOS (OB) red lettering
1 6AQ5A $6.00 RCA 110% 4600 / 4100Gm NOS (OB) red lettering
1 6AQ5A $6.00 RCA 110% 5100 / 4100Gm NOS (OB) red lettering
1 6AQ5A $6.00 RCA 110% 5200 / 4100Gm NOS (OB) red lettering
1 6AQ5A $6.00 RCA 115% 4800 / 4100Gm NOS (OB) red lettering
1 6AQ5A $6.00 RCA 120% 4800 / 4100Gm NOS (OB) red lettering
1 6AQ5A $6.00 RCA 110% 4800 / 4100Gm NOS (OB) red lettering
1 6AQ5A $6.00 RCA 120% 5000 / 4100Gm NOS (OB) red lettering
1 6AQ5A $6.00 RCA 110% 4700 / 4100Gm NOS (OB) red lettering
1 6AQ5A $6.00 RCA 110% 4700 / 4100Gm NOS (OB) white lettering
1 6AQ5A $6.00 RCA 120% 4800 / 4100Gm NOS (OB) white lettering
1 6AQ5A $6.00 RCA 115% 4600 / 4100Gm NOS (OB) white lettering
1 6AQ5A $6.00 RCA 125% 4800 / 4100Gm NOS (OB) white lettering
1 6AQ5A $6.00 RCA 110% 5000 / 4100Gm NOS (OB) red lettering
1 6AQ5A* $6.00 RCA 130% 5200 / 4100Gm NOS (OB) red lettering
1 6AQ5A* $6.00 RCA 130% 5200 / 4100Gm NOS (OB) red lettering
1 6AQ5A* $6.00 RCA 130% 5300 / 4100Gm NOS (OB) red lettering
1 6AQ5A* $6.00 RCA 130% 5300 / 4100Gm NOS (OB) red lettering
1 6AQ5A* $6.00 RCA 130% 5000 / 4100Gm NOS (OB) red lettering
1 6AQ5A* $6.00 RCA 130% 5000 / 4100Gm NOS (OB) red lettering
1 6AQ5A* $6.00 RCA 130% 5000 / 4100Gm NOS (OB) red lettering
1 6AQ5A* $6.00 RCA 130% 5000 / 4100Gm NOS (OB) red lettering
1 6AQ5A* $6.00 RCA 125% 4900 / 4100Gm NOS (OB) red lettering
1 6AQ5A $5.00 GE 115% 5200 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A $5.00 GE 125% 5200 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A $5.00 GE 130% 5200 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A $5.00 GE 125% 5200 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A $5.00 GE 130% 5500 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A $5.00 GE 120% 5800 / 4100Gm NOS (OB) red lettering - grid 'c' clip
1 6AQ5A $5.00 Sylvania 125% 4900 / 4100Gm NOS (OB) yellow lettering - grid 'c' clip
1 6AQ5A $5.00 Sylvania 120% 4800 / 4100Gm NOS (OB) yellow lettering - grid 'c' clip
1 6AQ5A $5.00 Sylvania 120% 5000 / 4100Gm NOS (OB) yellow lettering - grid 'c' clip
1 6AQ5A $5.00 Sylvania 125% 5000 / 4100Gm NOS (OB) yellow lettering - grid 'c' clip
1 6AQ5A $5.00 Sylvania 110% 4700 / 4100Gm NOS (OB) red lettering - grid 'c' clip
1 6AQ5A $5.00 Sylvania 130% 4800 / 4100Gm NOS (OB) red lettering - grid 'c' clip
1 6AQ5A $5.00 Sylvania 120% 4800 / 4100Gm NOS (OB) red lettering - grid 'c' clip
1 6AQ5A $5.00 Sylvania 125% 4700 / 4100Gm NOS (OB) red lettering - grid 'c' clip
1 6AQ5A $5.00 Sylvania 125% 5000 / 4100Gm NOS (OB) red lettering - grid 'c' clip
1 6AQ5A $5.00 Sylvania 125% 5000 / 4100Gm NOS (OB) red lettering - grid 'c' clip
1 6AQ5A $5.00 Sylvania 120% 5000 / 4100Gm NOS (OB) red lettering - grid 'c' clip
1 6AQ5A $5.00 Sylvania 120% 5100 / 4100Gm NOS (OB) red lettering - grid 'c' clip
1 6AQ5A $5.00 Sylvania 130% 4800 / 4100Gm NOS (OB) red lettering - grid 'c' clip
1 6AQ5A $5.00 Raytheon 130% 4500 / 4100Gm NOS (OB) ---
1 6AQ5A $5.00 Raytheon 130% 5000 / 4100Gm NOS (OB) grid 'c' clip
1 6AQ5A $5.00 Raytheon 135% 5000 / 4100Gm NOS (OB) grid 'c' clip
1 6AQ5A $5.00 Raytheon 130% 5000 / 4100Gm NOS (OB) grid 'c' clip
1 6AQ5A $5.00 Raytheon 130% 4800 / 4100Gm NOS (OB) grid 'c' clip
1 6AQ5A $5.00 Raytheon 130% 4800 / 4100Gm NOS (OB) grid 'c' clip
1 6AQ5A $5.00 Raytheon 125% 5000 / 4100Gm NOS (OB) grid 'c' clip
1 6AQ5A $5.00 Raytheon 115% 4800 / 4100Gm NOS (OB) grid 'c' clip
1 6AQ5A $5.00 Raytheon 115% 4700 / 4100Gm NOS (OB) grid 'c' clip
1 6AQ5A $5.00 Rogers 130% 5000 / 4100Gm NOS (wb) France
1 6AQ5A $5.00 Triad 110% 5000 / 4100Gm NOS (wb) ---
1 6AQ5A $5.00 Dumont 120% 4800 / 4100Gm NOS (wb) grid 'c' clip
1 6AQ5A $5.00 Dumont 120% 5400 / 4100Gm used (OB) grid 'c' clip
1 6AQ5A $5.00 Dumont 130% 5400 / 4100Gm used (OB) grid 'c' clip
1 6AQ5A $5.00 Motorola 120% 4800 / 4100Gm NOS (OB) grid 'c' clip
1 6HG5 / 6AQ5A $6.00 RCA 120% 5000 / 4100Gm NOS (OB) red lettering
1 6AQ5A / 6HG5 $5.00 GE 120% 5200 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 GE 120% 5500 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 GE 130% 5500 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 GE 130% 5500 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 GE 130% 5200 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 GE 130% 5300 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 GE 120% 5400 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 GE 125% 5200 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 GE 120% 5500 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 GE 130% 5300 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 GE 130% 5500 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 GE 130% 5300 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 GE 130% 5500 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 GE 125% 5500 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 GE 125% 5500 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 GE 125% 5200 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 GE 125% 5200 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 GE 125% 5500 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 GE 115% 5200 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 GE 120% 5200 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 GE 120% 5000 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 GE 120% 5000 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 GE 120% 5200 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 GE 120% 5000 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 GE 120% 5000 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 GE 120% 5000 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 GE 125% 5300 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 Sylvania 125% 5200 / 4100Gm NOS (OB) yellow lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 Sylvania 125% 5000 / 4100Gm NOS (OB) yellow lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 Sylvania 125% 5300 / 4100Gm NOS (OB) yellow lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 Sylvania 125% 5200 / 4100Gm NOS (OB) yellow lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 Sylvania 125% 5000 / 4100Gm NOS (OB) yellow lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 Sylvania 120% 4800 / 4100Gm NOS (OB) yellow lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 Sylvania 120% 5000 / 4100Gm NOS (OB) yellow lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 Sylvania 120% 5200 / 4100Gm NOS (OB) red lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 Sylvania 120% 4800 / 4100Gm NOS (OB) red lettering - grid 'c' clip
1 6AQ5A / 6HG5 $5.00 Raytheon 130% 5000 / 4100Gm NOS (OB) grid 'c' clip
1 6AQ5A / 6HG5 $5.00 Raytheon 120% 5000 / 4100Gm NOS (OB) grid 'c' clip
1 6AQ5A / 6HG5 $5.00 Raytheon 120% 4800 / 4100Gm NOS (OB) grid 'c' clip
1 6AQ5 $5.00 Sylvania 130% 4800 / 4100Gm NOS (OB) green lettering - grid 'c' clip - black coat
1 6AQ5 $5.00 Raytheon 135% 4800 / 4100Gm NOS (OB) grid 'c' clip
1 6AQ5 $5.00 Raytheon 130% 4900 / 4100Gm NOS (OB) grid 'c' clip
1 6AQ5 $5.00 Motorola 120% 4800 / 4100Gm NOS (OB) ---
1 6AQ5 $5.00 Raytheon 125% 5100 / 4100Gm NOS (OB) ---
1 6AQ5 $6.00 RCA 120% 4700 / 4100Gm NOS (OB) white lettering
1 6AQ5 $6.00 RCA 130% 4600 / 4100Gm NOS (OB) white lettering
1 6AQ5 $6.00 RCA 110% 4600 / 4100Gm NOS (OB) white lettering
1 6AQ5 $6.00 RCA 110% 5000 / 4100Gm NOS (OB) white lettering
1 6AQ5 $6.00 RCA 130% 5000 / 4100Gm NOS (OB) white lettering
1 6AQ5 $6.00 RCA 120% 5000 / 4100Gm NOS (OB) white lettering
1 6AQ5 $6.00 RCA 120% 5000 / 4100Gm NOS (OB) white lettering
1 6AQ5 $5.00 GE 125% 5300 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5 $5.00 GE 125% 5100 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5 $5.00 GE 120% 5000 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5 $5.00 GE 110% 4500 / 4100Gm NOS (OB) white lettering - grid 'c' clip
1 6AQ5 $2.50 CBS 130% 5000 / 4100Gm used (L) black coat
1 6005 / 6AQ5A $6.00 Sylvania 125% 5600 / 4100Gm NOS (OB) green lettering - grid 'c' clip - JAN
1 6669 / 6AQ5A $6.00 RCA 125% 5000 / 4100Gm NOS (OB) red lettering
1 6669 / 6AQ5A $6.00 GE 130% 5000 / 4100Gm NOS (OB) white lettering
1 6669 / 6AQ5A $6.00 GE 120% 5200 / 4100Gm NOS (OB) white lettering - damaged box
1 6669 / 6AQ5A $6.00 GE 120% 4900 / 4100Gm NOS (OB) white lettering - damaged box
1 6AQ5 $2.50 RCA 120% 5000 / 4100Gm used (L) red lettering
1 6AQ5 $2.50 RCA 130% 5200 / 4100Gm used (L) red lettering
1 6AQ5 $2.50 RCA 110% 5400 / 4100Gm used (L) red lettering
1 6AQ5 $2.50 RCA 110% 5000 / 4100Gm used (L) red lettering
1 6AQ5 $2.50 RCA 130% 5000 / 4100Gm used (L) red lettering
1 6AQ5 $2.50 RCA 130% 5400 / 4100Gm used (L) red lettering
1 6AQ5 $2.50 RCA 115% 5200 / 4100Gm used (L) red lettering
1 6AQ5 $2.50 RCA 115% 5000 / 4100Gm used (L) red lettering
1 12AQ5 $5.00 RCA 115% 4700 / 4100Gm NOS (OB) white lettering - worn box
1 12AQ5 $5.00 RCA 120% 4800 / 4100Gm NOS (OB) red lettering
1 12AQ5 $5.00 RCA 115% 4900 / 4100Gm NOS (OB) red lettering
1 12AQ5 $5.00 RCA 110% 4800 / 4100Gm NOS (OB) red lettering
1 12AQ5 $5.00 Sylvania 120% 5200 / 4100Gm NOS (OB) yellow lettering - grid 'c' clip
1 12AQ5 $5.00 Sylvania 120% 5400 / 4100Gm NOS (OB) yellow lettering - grid 'c' clip
1 12AQ5 $5.00 Sylvania 130% 5200 / 4100Gm NOS (OB) yellow lettering - grid 'c' clip
1 12AQ5 $2.50 Tung-Sol 120% 4800 / 4100Gm used (rb) grid 'c' clip
1 12AQ5 $2.50 Tung-Sol 120% 4700 / 4100Gm used (ob) ---
1 12AQ5 $2.50 Tung-Sol 130% 5400 / 4100Gm used (rb) grid 'c' clip
1 12AQ5 $2.00 RCA 120% 5000 / 4100Gm used (ob) red lettering
1 12AQ5 $2.00 RCA 110% 5200 / 4100Gm used (rb) red lettering
1 12AQ5 $2.00 GE 110% 5000 / 4100Gm used (rb) white lettering - grid 'c' clip
1 12AQ5 $2.00 GE 130% 4800 / 4100Gm used (ob) white lettering - grid 'c' clip
1 12AQ5 $2.00 Sylvania 120% 5100 / 4100Gm used (ob) yellow lettering - grid 'c' clip
1 12AQ5 $2.00 Sylvania 120% 4800 / 4100Gm used (rb) yellow lettering - grid 'c' clip
1 12AQ5 $2.00 Sylvania 120% 4700 / 4100Gm used (ob) yellow lettering - grid 'c' clip
1 12AQ5 $2.00 Sylvania 115% 4200 / 4100Gm used (rb) yellow lettering - grid 'c' clip
1 12AQ5 $2.00 Sylvania 115% 4800 / 4100Gm used (ob) yellow lettering - grid 'c' clip
1 12AQ5 $2.00 Raytheon 110% 4400 / 4100Gm used (ob) ---
1 12AQ5 $2.00 Raytheon 115% 4800 / 4100Gm used (rb) black coat
1 12AQ5 $2.00 Philco 120% 5000 / 4100Gm used (rb) ---
1 12AQ5 $2.00 CBS 120% 5200 / 4100Gm used (rb) ---
1 12AQ5 $2.00 Rogers 110% 3800 / 4100Gm used (ob) ---
1 12AQ5 $2.00 RCA 110% 3800 / 4100Gm used (ob) red lettering
1 12AQ5 $2.00 unknown 125% 5000 / 4100Gm used (ob) grid 'c' clip
1 12AQ5 $2.00 RCA 100% 4600 / 4100Gm used (ob) red lettering
1 12AQ5 $2.00 RCA 100% 4900 / 4100Gm used (ob) red lettering
1 12AQ5 $2.00 RCA 100% 4000 / 4100Gm used (ob) ---
1 12AQ5 $2.00 Raytheon 100% 3800 / 4100Gm used (ob) ---
1 12AQ5 $1.00 Rauland 100% 4500 / 4100Gm used leaky (200K) (rb) ---
1 6EW7 $5.00 RCA 140% / 120% 9000 / 7500: 2200 / 2000Gm NOS (OB) red lettering - 9T9 compactron
1 6EW7 $5.00 RCA 110% / 120% 8500 / 7500: 2500 / 2000Gm NOS (OB) red lettering - 9T9 compactron
1 6EW7 $5.00 RCA 140% / 130% 9000 / 7500: 2200 / 2000Gm NOS (OB) red lettering - 9T9 compactron
1 6EW7 $5.00 GE 140% / 130% 8500 / 7500: 2400 / 2000Gm NOS (OB) white lettering - 9T9 compactron
1 6EW7 $5.00 Raytheon 140% / 120% 8000 / 7500: 2250 / 2000Gm NOS (OB) 9T9 compactron
1 6EW7 $5.00 Sylvania 140% / 140% 9500 / 7500: 2600 / 2000Gm NOS (OB) yellow lettering - 9T9 compactron
1 6EW7 $5.00 Sylvania 130% / 140% 9500 / 7500: 2700 / 2000Gm NOS (OB) yellow lettering - 9T9 compactron
1 6EW7 $5.00 Westinghouse 130% / 130% 9000 / 7500: 2400 / 2000Gm NOS (OB) 9T9 compactron
1 6EW7 $5.00 Westinghouse 120% / 130% 9000 / 7500: 2200 / 2000Gm NOS (OB) 9T9 compactron
1 6EW7 $5.00 Westinghouse 120% / 140% 8500 / 7500: 2250 / 2000Gm NOS (OB) 9T9 compactron
1 6EW7 $5.00 Westinghouse 140% / 130% 9500 / 7500: 2500 / 2000Gm NOS (OB) 9T9 compactron
1 6EW7 $5.00 Westinghouse 140% / 140% 9000 / 7500: 3000 / 2000Gm NOS (OB) 9T9 compactron
1 6EW7 $5.00 Westinghouse 120% / 110% 9000 / 7500: 2100 / 2000Gm NOS (OB) 9T9 compactron - damaged box
1 6EW7 $2.00 Transvision 120% / 120% 9000 / 7500: 1900 / 2000Gm used (rb) 9T9 compactron
1 6EW7 $2.00 Packard Bell 110% / 110% 8000 / 7500: 1600 / 2000Gm used (rb) 9T9 compactron
1 6EW7 $2.00 Sechell Carlson 140% / 110% 8000 / 7500: 2250 / 2000Gm used (rb) 9T9 compactron
1 6EW7 $2.00 RCA 120% / 130% 9000 / 7500: 1750 / 2000Gm used (rb) 9T9 compactron
1 6EW7 $5.00 RCA 110% / 110% 8250 / 7500: 2050 / 2000Gm NOS (OB) red lettering - miniature
1 6EW7 $5.00 RCA 110% / 110% 8250 / 7500: 2200 / 2000Gm NOS (OB) red lettering - miniature
1 6EW7 $2.00 RCA 100% / 100% 8250 / 7500: 2000 / 2000Gm used (ob) red lettering - miniature
1 6EW7 $2.00 RCA 100% / 100% 7500 / 7500: 2200 / 2000Gm used (ob) red lettering - miniature
1 6EW7 $2.00 RCA 100% / 100% 8000 / 7500: 1800 / 2000Gm used (ob) red lettering - miniature
1 6EW7 $2.00 RCA 100% / 90% 7750 / 7500: 2000 / 2000Gm used (ob) red lettering - miniature
1 6EW7 $2.00 RCA 110% / 110% 8000 / 7500: 2300 / 2000Gm used (ob) red lettering - miniature
1 6EW7 $2.00 RCA 110% / 110% 8250 / 7500: 2100 / 2000Gm used (ob) red lettering - miniature
1 6EW7 $2.00 RCA 110% / 110% 8000 / 7500: 2200 / 2000Gm used (ob) red lettering - miniature
1 6EW7 $2.00 RCA 100% / 110% 8000 / 7500: 2150 / 2000Gm used (ob) red lettering - miniature
1 6EW7 $4.00 Amperex 120% / 120% 100 / 100dmc used (rb) 9t9 compactron
1 6EW7 $3.00 unknown 120% / 115% 10000 / 7500: 2300 / 2000Gm 90 / 80dmc used (rb) 9t9 compactron
1 6GY8 $3.00 RCA 110% / 100% / 100% --- NOS (OB) ---
1 6GY8 $3.00 RCA 110% / 110% / 110% --- NOS (OB) ---
1 6GY8 $3.00 RCA 110% / 100% / 105% --- NOS (OB) ---
1 6GY8 $3.00 RCA 110% / 110% / 110% --- NOS (OB) ---
1 6GY8 $3.00 RCA 110% / 100% / 100% --- NOS (OB) ---
1 6GY8 $3.00 RCA 100% / 100% / 100% --- NOS (OB) water damaged box
1 6GY8 $3.00 Sylvania 115% / 120% / 110% --- NOS (OB) ---
1 6GY8 $3.00 International Servicemaster 120% / 120% / 110% --- NOS (OB) ---
1 6GY8 $1.00 Sylvania 100% / 90% / 90% --- used (OB) ---
1 6GY8 $0.50 RCA 110% / 100% / 80% --- used (OB) ---
1 6ML8 $4.00 Sylvania 130% / 130% / 130% 110 / 110 / 120dmc NOS (OB) ---
1 6ML8 $4.00 Sylvania 120% / 115% / 110% 120 / 115 / 115dmc NOS (OB) ---
1 6ML8 $4.00 Sylvania 120% / 130% / 130% 100 / 110 / 120dmc NOS (OB) ---
1 6ML8 $4.00 Philco 120% / 120% / 120% 120 / 120 / 120dmc NOS (OB) ---
1 6ML8 $4.00 Sylvania 125% / 120% / 125% 120 / 110 / 120dmc NOS (OB) ---
1 6ML8 $4.00 Sylvania 115% / 120% / 120% 105 / 110 / 110dmc NOS (OB) ---
1 6ML8 $4.00 Sylvania 120% / 120% / 120% 100 / 100 / 105dmc NOS (OB) ---
1 6ML8 $4.00 Sylvania 130% / 130% / 130% 100 / 115 / 100dmc NOS (OB) ---
1 6ML8 $4.00 RCA 115% / 120% / 125% 120 / 110 / 115mc NOS (OB) ---
1 6ML8 $4.00 RCA 120% / 125% / 130% 120 / 120 / 120mc NOS (OB) ---
1 6ML8 $4.00 RCA 120% / 120% / 120% 110 / 110 / 110mc NOS (OB) ---
1 6ML8 $4.00 RCA 125% / 115% / 115% 110 / 105 / 100mc NOS (OB) ---
1 6ML8 $4.00 RCA 140% / 140% / 130% 110 / 110 / 110mc NOS (OB) ---
1 6ML8 $4.00 RCA 120% / 135% / 130% 100 / 115 / 100mc NOS (OB) ---
1 6ML8 $1.00 Sylvania 90% / 120% / 90% 90 / 100 / 80dmc used (OB) ---
1 6ML8 $1.00 RCA 120% / 90% / 110% 100 / 80 / 85mc used (rb) ---
1 6686 / E81L $10.00 Amperex PQ 110% 8250 / 7000Gm NOS (OB) gold pins - Germany
1 6686 / E81L $10.00 Amperex PQ 110% 8000 / 7000Gm NOS (OB) gold pins - Germany
1 6686 / E81L $10.00 Amperex PQ 100% 7500 / 7000Gm NOS (OB) gold pins - Germany
1 6686 / E81L $10.00 Amperex PQ 110% 8000 / 7000Gm NOS (OB) gold pins - Germany
1 6686 / E81L $10.00 National Electronics 120% 9000 / 7000Gm NOS (OB) Germany
1 6686 / E81L $10.00 National Electronics 100% 8000 / 7000Gm NOS (OB) Germany
1 6686 / E81L $10.00 National Electronics 100% 7500 / 7000Gm NOS (OB) Germany
1 6686 / E81L $10.00 National Electronics 100% 7500 / 7000Gm NOS (OB) Germany
1 6686 / E81L $10.00 National Electronics 110% 8000 / 7000Gm NOS (OB) Germany
1 6686 / E81L $9.00 Philips SQ 115% 8000 / 7000Gm used (L) gold pins - Holland
1 6686 / E81L $9.00 Philips SQ 110% 7500 / 7000Gm used (L) gold pins - Germany
1 6686 / E81L $9.00 Philips SQ 110% 7500 / 7000Gm used (L) gold pins - Holland
1 6686 / E81L $9.00 Philips SQ 110% 7500 / 7000Gm used (L) gold pins - Holland
1 6686 / E81L $9.00 Philips SQ 110% 8250 / 7000Gm used (L) gold pins - Holland
1 6686 / E81L $9.00 Philips SQ 105% 7250 / 7000Gm used (L) gold pins - Holland
1 6686 / E81L $9.00 Philips SQ 100% 7500 / 7000Gm used (L) gold pins - Germany
1 6686 / E81L $9.00 Philips SQ 110% 7250 / 7000Gm used (L) gold pins - Germany
1 6686 / E81L $9.00 Philips 100% 7250 / 7000Gm used (L) gold pins - Holland
1 6686 / E81L $9.00 Philips 100% 7500 / 7000Gm used (L) gold pins - Holland
1 6686 / E81L $9.00 Philips 115% 8000 / 7000Gm used (L) gold pins - Holland
1 6686 / E81L $9.00 Philips 115% 8250 / 7000Gm used (L) gold pins - Holland
1 6686 / E81L $9.00 Marconi 105% 8000 / 7000Gm used (L) gold pins - Germany

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