MDB Ventures Audio Tubes

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Type: 6AB4 , EC92 , 6664 , 6C4 , 6001 , EC90 , 6CA4 , EZ81 , 6202 , 6X4 , EZ90 , 6V4 , EZ80 , 6203 , 12X4

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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 Quantity Available Tube Type Price Each Tube Brand Emission Strength Mutual Conductance Description Notes 1 6AB4/EC92 $5.00 Tungsram 70% 3000/4000Gm used (wb) (M7) smooth gray plate 1 6AB4/EC92 $25.00 Mullard 110% 4300/4000Gm NOS (wb) (M7) gray plate - West Germany 1 6AB4/EC92 $25.00 Mullard 130% 5000/4000Gm NOS (wb) (M7) gray plate - West Germany 1 6AB4/EC92 $25.00 Mullard 125% 4300/4000Gm NOS (OB) (M7) gray plate - England 1 6AB4/EC92 $25.00 Mullard 110% 4000/4000Gm NOS (OB) (M7) gray plate - England 1 6AB4/EC92 $15.00 Valvo 130% 4800/4000Gm NOS (OB) (M7) gray plate - damaged box 1 6AB4/EC92 $15.00 Tung-Sol 130% 4500/4000Gm NOS (OB) (M7) gray plate 1 6AB4/EC92 $15.00 Tung-Sol 130% 4400/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $20.00 Tung-Sol 110% 3800/4000Gm NOS (OB) (M7) black plate 1 6AB4 $15.00 Tung-Sol 120% 4200/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $15.00 Tung-Sol 120% 4300/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $15.00 Tung-Sol 140% 4500/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $10.00 Tung-Sol 140% 5100/4000Gm used (OB) (M7) gray plate 1 6AB4 $15.00 Amperex 120% 4700/4000Gm NOS (OB) (M7) gray plate 1 6AB4/6664 $12.00 Sylvania 150% 6000/4000Gm NOS (OB) (M7) black plate - yellow 1 6AB4/6664 $12.00 Sylvania 130% 5000/4000Gm NOS (OB) (M7) black plate - yellow 1 6AB4/6664 $12.00 Sylvania 140% 5800/4000Gm NOS (OB) (M7) black plate - yellow 1 6AB4/6664 $12.00 Sylvania 140% 5400/4000Gm NOS (OB) (M7) black plate - yellow 1 6AB4 $12.00 Sylvania 110% 4400/4000Gm NOS (OB) (M7) black plate - green 1 6AB4 $7.50 Philco 130% 4800/4000Gm NOS (OB) (M7) black plate 1 6AB4 $6.00 Sylvania 110% 4400/4000Gm NOS (OB) (M7) black plate - yellow 1 6AB4 $6.00 Sylvania 120% 4800/4000Gm NOS (OB) (M7) black plate - yellow 1 6AB4 $6.00 Sylvania 130% 4800/4000Gm NOS (OB) (M7) black plate - yellow 1 6AB4 $6.00 Sylvania 110% 4500/4000Gm NOS (OB) (M7) black plate - yellow 1 6AB4 $6.00 Sylvania 110% 4200/4000Gm NOS (OB) (M7) black plate - yellow 1 6AB4 $6.00 Sylvania 110% 4700/4000Gm NOS (OB) (M7) black plate - yellow 1 6AB4 $6.00 Sylvania 120% 4500/4000Gm NOS (OB) (M7) black plate - yellow 1 6AB4 $6.00 Sylvania 115% 4600/4000Gm NOS (OB) (M7) black plate - yellow 1 6AB4 $6.00 Sylvania 110% 4400/4000Gm NOS (OB) (M7) black plate - yellow 1 6AB4 $6.00 Sylvania 120% 4600/4000Gm NOS (OB) (M7) black plate - yellow 1 6AB4 $6.00 Sylvania 130% 4800/4000Gm NOS (OB) (M7) black plate - yellow 1 6AB4 $6.00 Sylvania 110% 4300/4000Gm NOS (OB) (M7) black plate - yellow 1 6AB4 $6.00 Sylvania 150% 5200/4000Gm NOS (OB) (M7) black plate - yellow 1 6AB4 $6.00 Sylvania 115% 4500/4000Gm NOS (OB) (M7) black plate - yellow 1 6AB4 $6.00 Sylvania 115% 5200/4000Gm NOS (OB) (M7) black plate - yellow 1 6AB4 $6.00 Sylvania 110% 4300/4000Gm NOS (OB) (M7) black plate - yellow 1 6AB4 $6.00 Sylvania 130% 4800/4000Gm NOS (OB) (M7) black plate - red 1 6AB4 $6.00 Sylvania 130% 5200/4000Gm NOS (OB) (M7) black plate - red 1 6AB4 $6.00 Sylvania 140% 5400/4000Gm NOS (OB) (M7) black plate - red 1 6AB4 $6.00 Raytheon 110% 4600/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $6.00 Raytheon 130% 4800/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $6.00 Raytheon 130% 4700/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $6.00 Raytheon 110% 4200/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $6.00 Raytheon 110% 4800/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $6.00 Raytheon 120% 4200/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $6.00 Raytheon 110% 4600/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $6.00 GE 150% 5800/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $6.00 GE 150% 5800/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $6.00 GE 120% 4300/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $6.00 GE 120% 4500/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $6.00 GE 120% 4500/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $6.00 GE 110% 4800/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $6.00 GE 120% 4400/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $6.00 GE 140% 5000/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $6.00 GE 110% 4500/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $6.00 GE 110% 4200/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $6.00 RCA 110% 4000/4000Gm NOS (OB) (M7) gray plate - white lettering 1 6AB4 $6.00 RCA 130% 5500/4000Gm NOS (OB) (M7) gray plate - white lettering 1 6AB4 $6.00 RCA 150% 5400/4000Gm NOS (OB) (M7) gray plate - white lettering 1 6AB4 $6.00 RCA 130% 4600/4000Gm NOS (OB) (M7) gray plate - white lettering 1 6AB4 $7.50 RCA 110% 4200/4000Gm NOS (OB) (M7) black plate - white lettering 1 6AB4 $7.50 RCA 120% 4800/4000Gm NOS (OB) (M7) black plate - white lettering 1 6AB4 $7.50 RCA 120% 4200/4000Gm NOS (OB) (M7) black plate - red lettering 1 6AB4 $7.50 RCA 110% 4200/4000Gm NOS (OB) (M7) black plate - red lettering 1 6AB4 $7.50 RCA 130% 4500/4000Gm NOS (OB) (M7) black plate - red lettering 1 6AB4 $7.50 RCA 140% 5000/4000Gm NOS (OB) (M7) black plate - red lettering 1 6AB4 $7.50 RCA 120% 4400/4000Gm NOS (OB) (M7) black plate - red lettering 1 6AB4 $6.00 RCA 120% 4400/4000Gm NOS (OB) (M7) gray plate - red lettering 1 6AB4 $6.00 RCA 120% 4500/4000Gm NOS (OB) (M7) gray plate - red lettering 1 6AB4 $6.00 RCA 125% 4500/4000Gm NOS (OB) (M7) gray plate - red lettering 1 6AB4 $6.00 RCA 120% 4200/4000Gm NOS (OB) (M7) gray plate - red lettering 1 6AB4 $6.00 RCA 120% 4500/4000Gm NOS (OB) (M7) gray plate - red lettering 1 6AB4 $6.00 RCA 125% 4500/4000Gm NOS (OB) (M7) gray plate - red lettering 1 6AB4 $6.00 RCA 120% 4300/4000Gm NOS (OB) (M7) gray plate - red lettering 1 6AB4 $6.00 RCA 125% 4600/4000Gm NOS (OB) (M7) gray plate - red lettering 1 6AB4 $6.00 RCA 115% 4500/4000Gm NOS (OB) (M7) gray plate - red lettering 1 6AB4 $6.00 RCA 100% 4000/4000Gm NOS (OB) (M7) gray plate - red lettering 1 6AB4 $5.00 Westinghouse 120% 4200/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $5.00 Westinghouse 110% 4100/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $5.00 Westinghouse 110% 4200/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $5.00 Westinghouse 120% 4500/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $5.00 CBS 140% 4800/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $5.00 Rad-Tel 120% 4500/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $5.00 Motorola 115% 4200/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $5.00 Motorola 115% 4100/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $5.00 Motorola 110% 3900/4000Gm NOS (OB) (M7) gray plate 1 6AB4 $5.00 Motorola 110% 4000/4000Gm NOS (OB) (M7) gray plate - water damaged box 1 6AB4 $5.00 Motorola 120% 4400/4000Gm NOS (OB) (M7) black plate 1 6AB4 $5.00 Motorola 140% 5000/4000Gm NOS (OB) (M7) black plate 1 6AB4 $5.00 Motorola 115% 4200/4000Gm NOS (OB) (M7) black plate 1 6AB4 $5.00 Curtis Mathis 120% 5400/4000Gm NOS (OB) (M7) black plate 1 6AB4 $5.00 Magnavox 125% 5300/4000Gm NOS (OB) (M7) black plate 1 6AB4 $5.00 Magnavox 125% 5900/4000Gm NOS (OB) (M7) black plate 1 6AB4 $2.50 RCA 100% 4000/4000Gm used (OB) (M7) gray plate - red 1 6AB4 $2.50 RCA 130% 4800/4000Gm used (OB) (M7) gray plate - red 1 6AB4 $2.50 RCA 105% 4000/4000Gm used (OB) (M7) gray plate - red 1 6AB4 $2.50 RCA 110% 4000/4000Gm used (OB) (M7) gray plate - red 1 6AB4 $2.50 RCA 110% 4000/4000Gm used (OB) (M7) gray plate - red 1 6AB4 $2.50 RCA 100% 3700/4000Gm used (OB) (M7) gray plate - red 1 6AB4 $2.50 RCA 110% 4200/4000Gm used (OB) (M7) gray plate - white 1 6AB4 $2.50 RCA 100% 4000/4000Gm used (OB) (M7) gray plate - white 1 6AB4 $2.50 RCA 130% 4700/4000Gm used (OB) (M7) black plate - white 1 6AB4 $2.50 RCA 100% 4000/4000Gm used (OB) (M7) black plate - white 1 6AB4 $2.50 RCA 100% 4000/4000Gm used (OB) (M7) black plate - red 1 6AB4 $2.50 RCA 100% 4000/4000Gm used (OB) (M7) black plate - red 1 6AB4 $2.50 RCA 100% 3800/4000Gm used (OB) (M7) black plate - red 1 6AB4 $2.50 RCA 100% 3800/4000Gm used (OB) (M7) black plate - red 1 6AB4 $2.50 RCA 110% 4200/4000Gm used (OB) (M7) black plate - red 1 6AB4 $2.50 RCA 110% 4200/4000Gm used (OB) (M7) black plate - red 1 6AB4 $2.50 RCA 110% 4300/4000Gm used (OB) (M7) black plate - red 1 6AB4 $2.50 RCA 120% 4500/4000Gm used (OB) (M7) black plate - red 1 6AB4 $2.50 RCA 120% 4600/4000Gm used (OB) (M7) black plate - red 1 6AB4 $2.50 GE 110% 4000/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.50 GE 100% 3600/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.50 GE 100% 3900/4000Gm used (rb) (M7) gray plate 1 6AB4 $2.50 GE 100% 3800/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.50 GE 120% 4600/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.50 GE 110% 4200/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.50 Curtis Mathis 120% 5400/4000Gm used (OB) (M7) black plate 1 6AB4 $2.50 Sylvania 150% 5500/4000Gm used (OB) (M7) black plate - yellow 1 6AB4 $2.50 Sylvania 130% 5000/4000Gm used (OB) (M7) black plate - green 1 6AB4 $2.50 Tung-Sol 120% 4400/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.50 CBS/Hytron 105% 4500/4000Gm used (OB) (M7) black plate 1 6AB4 $2.50 Westinghouse 100% 3800/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.50 Westinghouse 100% 3800/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.50 Delta 105% 4200/4000Gm used (OB) (M7) black plate 1 6AB4 $2.50 Delta 100% 4200/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.50 HiLite 115% 4300/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.50 Motorola 110% 4300/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.50 Motorola 110% 3800/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.50 Motorola 110% 4000/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.50 Motorola 110% 4000/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.50 Motorola 100% 3800/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.50 Motorola 105% 4100/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.50 Motorola 100% 3800/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.50 Motorola 100% 3800/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.50 Motorola 110% 3800/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.50 Motorola 110% 3800/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.50 Motorola 100% 4000/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.50 Motorola 100% 4100/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.50 Motorola 110% 3800/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.50 Motorola 100% 4000/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.50 Motorola 100% 3800/4000Gm used (OB) (M7) black plate 1 6AB4 $2.50 Motorola 100% 3700/4000Gm used (OB) (M7) black plate 1 6AB4 $2.50 Motorola 100% 3700/4000Gm used (OB) (M7) black plate 1 6AB4 $2.50 Motorola 110% 4200/4000Gm used (OB) (M7) black plate 1 6AB4 $2.50 Motorola 115% 4100/4000Gm used (OB) (M7) black plate 1 6AB4 $2.00 GE 95% 3600/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.00 GE 90% 3500/4000Gm used (rb) (M7) gray plate 1 6AB4 $2.00 GE 90% 3800/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.00 Raytheon 95% 3600/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.00 Delco 90% 3500/4000Gm used (OB) (M7) black plate 1 6AB4 $2.00 Delco 90% 3500/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.00 Concert Master 90% 3500/4000Gm used (OB) (M7) black plate 1 6AB4 $2.00 Motorola 90% 3800/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.00 Motorola 90% 3300/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.00 Motorola 95% 3600/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.00 Motorola 90% 3800/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.00 Motorola 90% 3800/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.00 Motorola 95% 3600/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.00 Motorola 90% 3600/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.00 Motorola 90% 3600/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.00 Motorola 90% 3700/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.00 Motorola 90% 3800/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.00 Motorola 95% 3500/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.00 Motorola 90% 3800/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.00 Motorola 90% 3000/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.00 Motorola 90% 3600/4000Gm used (OB) (M7) black plate 1 6AB4 $2.00 Motorola 90% 3500/4000Gm used (OB) (M7) black plate 1 6AB4 $2.00 Motorola 90% 3500/4000Gm used (OB) (M7) black plate 1 6AB4 $2.00 Motorola 90% 3800/4000Gm used (OB) (M7) black plate 1 6AB4 $2.00 Motorola 90% 3600/4000Gm used (OB) (M7) black plate 1 6AB4 $2.00 Motorola 90% 3400/4000Gm used (OB) (M7) black plate 1 6AB4 $2.00 Motorola 90% 4000/4000Gm used (OB) (M7) black plate 1 6AB4 $2.00 Motorola 90% 4500/4000Gm used (OB) (M7) black plate 1 6AB4 $2.00 GE 90% 3800/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.00 GE 90% 3600/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.00 GE 90% 3500/4000Gm used (OB) (M7) gray plate 1 6AB4 $2.00 GE 95% 3800/4000Gm used (OB) (M7) gray plate 1 6AB4 $1.50 unknown 115% 4300/4000Gm used (OB) (M7) black plate 1 6AB4 $1.50 unknown 115% 4200/4000Gm used (OB) (M7) gray plate 1 6AB4 $1.00 Motorola 85% 3500/4000Gm used (OB) (M7) gray plate 1 6AB4 $1.00 Motorola 85% 3500/4000Gm used (OB) (M7) gray plate 1 6AB4 $1.00 Triad 80% 3300/4000Gm used (OB) (M7) gray plate 1 6C4 $10.00 RCA untested sealed in box NOS (OB) (M7) JAN - US Navy 1 6C4 $10.00 RCA 135% 2850/2200Gm NOS (OB) (M7) rectangular ribbed black plate - OEM box - for Hallicrafters - white lettering 1 6C4 $10.00 RCA 110% 2350/2200Gm NOS (OB) (M7) rectangular ribbed black plate - USA - white lettering - JAN - damaged box 1 6C4 $10.00 RCA 125% 2700/2200Gm NOS (OB) (M7) rectangular ribbed black plate - white lettering - JAN - damaged box 1 6C4 $8.00 Ken-Rad 110% 2300/2200Gm NOS (OB) (M7) rectangular ribbed black plate - USA - JAN - for Stromberg Carlson 1 6C4 $8.00 Philco 120% 2600/2200Gm NOS (OB) (M7) Tripple mica - square gray plate - USA 1 6C4 $8.00 GE 120% 2500/2200Gm NOS (OB) (M7) rectangular ribbed gray plate - USA - white lettering 1 6C4 $8.00 GE 115% 2700/2200Gm NOS (OB) (M7) rectangular ribbed gray plate - USA - white lettering 1 6C4 $8.00 CBS 120% 2550/2200Gm NOS (OB) (M7) rectangular ribbed gray plate - USA - OEM box 1 6C4 $8.00 CBS 115% 2400/2200Gm NOS (OB) (M7) rectangular ribbed gray plate - USA - OEM box 1 6C4 $8.00 Sylvania 120% 2450/2200Gm NOS (wb) (M7) rectangular ribbed gray plate - USA - green lettering 1 6C4 $8.00 Magnavox 120% 2500/2200Gm NOS (OB) (M7) square gray plate 1 6C4 $8.00 Channel Master 125% 2700/2200Gm NOS (OB) (M7) rectangular ribbed gray plate 1 6100 $8.00 Lansdale 120% 2450/2200Gm NOS (OB) (M7) rectangular ribbed black plate 1 6100 $8.00 Lansdale 120% 2600/2200Gm NOS (OB) (M7) rectangular ribbed black plate 1 6100/6C4-WA $7.50 Sylvania 105% 2300/2200Gm used (rb) (M7) rectangular ribbed black plate - JAN - yellow lettering 1 6100/6C4 $7.50 GE 100% 2500/2200Gm used (rb) (M7) tripple mica - square gray plate - USA - white lettering 1 6100 $7.50 GE 100% 2400/2200Gm used (wb) (M7) tripple mica - square gray plate - white lettering 1 6100 $7.50 GE 90% 2100/2200Gm used (ob) (M7) tripple mica - square gray plate - white lettering 1 6C4-WA $8.00 GE 100% 2200/2200Gm used (rb) (M7) tripple mica - square gray plate - USA - white lettering 1 6C4 $5.00 RCA 130% 2800/2200Gm used (wb) (M7) rectangular ribbed black plate - USA - white lettering 1 6C4 $5.00 RCA 110% 2100/2200Gm used (wb) (M7) rectangular ribbed black plate - USA - red lettering 1 6C4 $5.00 RCA 110% 2300/2200Gm used (wb) (M7) rectangular ribbed black plate - USA - white lettering 1 6C4 $5.00 Raytheon 100% 2200/2200Gm used (wb) (M7) rectangular ribbed black plate - USA 1 6C4 $5.00 Ken-Rad 125% 2550/2200Gm used (wb) (M7) rectangular ribbed black plate - USA 1 6C4 $5.00 Sylvania 100% 2150/2200Gm used (wb) (M7) rectangular ribbed black plate - USA - green lettering 1 6C4 $5.00 National Union 125% 2500/2200Gm used (rb) (M7) rectangular ribbed black plate 1 6C4 $5.00 Bendix 100% 2050/2200Gm used (L) (M7) rectangular ribbed gray plate 1 6C4 $4.00 National Union 90% 1900/2200Gm used (L) (M7) rectangular ribbed black plate - USA - US Navy 1 6CA4/EZ81 $24.00 Westinghouse 110%/110% --- NOS (OB) (M9) USA 1 6CA4/EZ81 $24.00 Westinghouse 110%/110% --- NOS (OB) (M9) Austria 1 6CA4 $24.00 Zenith 110%/100% --- NOS (OB) (M9) usa 1 6CA4 $24.00 GE 110%/110% --- NOS (OB) (M9) red lettering 1 6CA4 $24.00 GE 110%/110% --- NOS (OB) (M9) white lettering 1 6CA4 $24.00 Magnavox 110%/110% --- NOS (OB) (M9) Japan 1 6CA4 $15.00 Eico by Mullard 105%/115% --- used (rb) (M9) --- 1 6CA4/EZ81 $15.00 Heath by Mullard 100%/120% --- used (rb) (M9) --- 1 6CA4 $12.00 Tung-Sol 110%/110% --- used (rb) (M9) --- 1 6CA4 $12.00 Tung-Sol 105%/105% --- used (rb) (M9) --- 1 6CA4 $12.00 RCA 110%/110% --- used (wb) (M9) red lettering - USA 1 6CA4 $12.00 Magnavox 110%/100% --- used (wb) (M9) usa 1 6CA4 $12.00 Raytheon 105%/110% --- used (wb) (M9) usa 1 6CA4 $12.00 Curtis Mathes 110%/100% --- used (wb) (M9) Japan 1 6CA4 $10.00 unknown 110%/110% --- used (wb) (M9) Britain 1 6CA4 $10.00 unknown 105%/110% --- used (rb) (M9) Britain 1 6CA4 $10.00 unknown 110%/105% --- used (rb) (M9) usa 1 6CA4 $10.00 unknown 105%/110% --- used (wb) (M9) usa 1 6CA4 $10.00 unknown 100%/110% --- used (wb) (M9) gt. britain 1 6CA4 $10.00 unknown 100%/110% --- used (wb) (M9) england 1 6CA4 $8.00 unknown 120%/90% --- used (wb) (M9) england 1 6CA4 $8.00 unknown 110%/90% --- used (wb) (M9) usa 1 6CA4 $2.00 RCA 70%/120% --- used (L) (M9) --- 1 6CA4 $2.00 Sylvania 90%/80% --- used (L) (M9) usa 1 6202/6X4WA $10.00 GE 120%/120% --- NOS (OB) (M7) green lettering - special 6X4 - JAN 1 6202/6X4WA $10.00 GE 120%/120% --- NOS (OB) (M7) green lettering - special 6X4 - JAN 1 6202/6X4WA $10.00 GE 120%/120% --- NOS (OB) (M7) green lettering - special 6X4 - JAN 1 6202/6X4WA $10.00 GE 120%/120% --- NOS (OB) (M7) green lettering - special 6X4 - JAN 1 6202/6X4WA $10.00 GE 120%/120% --- NOS (OB) (M7) green lettering - special 6X4 - JAN 1 6202/6X4W $10.00 GE 120%/110% --- NOS (OB) (M7) white lettering - special 6X4 1 6202/6X4WA $10.00 Sylvania 110%/110% --- NOS (OB) (M7) special 6X4 1 6X4-WA $10.00 GE 120%/120% --- NOS (OB) (M7) special 6X4 - JAN 1 6X4-WA $10.00 GE 110%/110% --- NOS (OB) (M7) white lettering 1 6202 $5.00 RCA 110%/110% --- NOS (OB) (M7) red lettering - special 6X4 1 6202 $5.00 GE 120%/120% --- NOS (OB) (M7) white lettering - special 6X4 - torn box flap 1 6202 $5.00 Westinghouse 120%/140% --- NOS (OB) (M7) special 6X4 1 EZ-90/6X4 $15.00 Mullard 110%/110% --- used (wb) (M7) britain 1 EZ-90/6X4 $15.00 Mullard 120%/130% --- used (wb) (M7) britain 1 EZ-90/6X4 $15.00 Mullard for Knight 120%/130% --- used (wb) (M7) britain 1 6X4 $15.00 Mullard 130%/130% --- used (wb) (M9) britain 1 6X4 $15.00 Mullard 120%/130% --- used (wb) (M9) britain 1 6X4 $5.00 Tung-Sol 120%/110% --- NOS (OB) (M7) torn box flap 1 6X4 $5.00 RCA 110%/110% --- NOS (OB) (M7) red lettering 1 6X4 $5.00 GE 120%/120% --- NOS (OB) (M7) white lettering 1 6X4 $5.00 Tung-Sol 120%/120% --- NOS (OB) (M7) damaged box 1 6X4 $5.00 Tung-Sol 120%/120% --- NOS (OB) (M7) --- 1 6X4 $5.00 RCA 115%/120% --- NOS (OB) (M7) white lettering 1 6X4 $5.00 RCA 115%/115% --- NOS (OB) (M7) white lettering 1 6X4 $5.00 RCA 120%/120% --- NOS (OB) (M7) white lettering 1 6X4 $5.00 RCA 115%/115% --- NOS (OB) (M7) white lettering 1 6X4 $5.00 RCA 115%/120% --- NOS (OB) (M7) white lettering 1 6X4 $5.00 RCA 110%/110% --- NOS (OB) (M7) red lettering 1 6X4 $5.00 RCA 115%/120% --- NOS (OB) (M7) red lettering 1 6X4 $5.00 RCA 110%/110% --- NOS (OB) (M7) red lettering 1 6X4 $4.00 GE 130%/120% --- NOS (OB) (M7) white lettering 1 6X4 $4.00 GE 120%/120% --- NOS (OB) (M7) white lettering 1 6X4 $4.00 GE 120%/120% --- NOS (OB) (M7) white lettering 1 6X4 $4.00 GE 110%/120% --- NOS (OB) (M7) white lettering 1 6X4 $4.00 Sylvania 110%/115% --- NOS (OB) (M7) yellow lettering 1 6X4 $4.00 Rogers 120%/120% --- NOS (OB) (M7) torn box flap 1 6X4 $4.00 Philco 120%/120% --- NOS (OB) (M7) --- 1 6X4 $4.00 Delco 120%/110% --- NOS (OB) (M7) --- 1 6X4 $4.00 Westinghouse 110%/110% --- NOS (OB) (M7) torn box flap 1 6X4 $4.00 ITT 120%/125% --- NOS (OB) (M7) --- 1 6X4 $4.00 Raytheon 120%/115% --- NOS (OB) (M7) --- 1 6X4 $5.00 RCA 110%/110% --- NOS (wb) (M7) red lettering 1 6X4 $5.00 Sylvania 110%/110% --- NOS (OB) (M7) yellow lettering 1 6X4 $5.00 CBS 110%/110% --- NOS (OB) (M7) --- 1 6X4 $5.00 Philco 110%/110% --- NOS (OB) (M7) --- 1 6202/6X4-WA $2.50 GE 100%/115% --- used (wb) (M9) --- 1 6X4-WA $5.00 Tung-Sol 110%/120% --- used (wb) (M7) --- 1 6X4-WA $2.00 unknown 110%/110% --- used (wb) (M7) --- 1 6X4 $2.50 Tung-Sol 115%/115% --- used (wb) (M7) --- 1 6X4 $2.00 GE 110%/120% --- used (rb) (M7) white lettering 1 6X4 $1.50 Philco 105%/110% --- used (rb) (M7) --- 1 6X4/EZ90 $2.50 Eico 110%/110% --- used (rb) (M7) Italy 1 6X4 $1.50 Motorola 100%/95% --- used (rb) (M7) --- 1 6X4 $2.00 Westinghouse 120%/110% --- used (OB) (M7) --- 1 6X4 $1.50 unknown 110%/110% --- used (rb) (M7) --- 1 6X4 $1.00 unknown 90%/100% --- used (L) (M7) --- 1 6X4 $2.00 Tung-Sol 115%/110% --- used (L) (M7) --- 1 6X4 $2.00 Ken-Rad 115%/115% --- used (L) (M7) --- 1 6X4 $2.00 RCA 110%/110% --- used (L) (M7) red lettering 1 6X4 $1.50 RCA 105%/110% --- used (L) (M7) white lettering 1 6X4 $1.50 RCA 110%/100% --- used (L) (M7) red lettering 1 6X4 $0.50 unknown 100%/100% --- used (L) (M7) pin 5 missing 1 6V4/EZ80 $20.00 Mullard 110%/110% --- NOS (OB) --- 1 6V4/EZ80 $10.00 Amperex 110%/105% --- used (wb) --- 1 6V4/EZ80 $10.00 GE 115%/110% --- used (wb) --- 1 6V4/EZ80 $10.00 GE 100%/110% --- used (wb) Holland 1 6203 $5.00 Amperex 110%/110% --- NOS (OB) (M7) world logo 1 6203 $5.00 GE 110%/110% --- NOS (OB) (M7) green lettering 1 6203 $5.00 GE 110%/110% --- NOS (OB) (M7) green lettering 1 6203 $5.00 GE 110%/110% --- NOS (OB) (M7) green lettering - missing box flap 1 6203 $5.00 GE 110%/110% --- NOS (OB) (M7) white lettering 1 6203 $5.00 GE 110%/110% --- NOS (OB) (M7) white lettering 1 6203 $2.50 GE 110%/110% --- used (rb) (M7) white lettering - 5 star 1 6203 $2.50 GE 110%/110% --- used (rb) (M7) white lettering - 5 star 1 6203 $2.50 GE 100%/100% --- used (rb) (M7) white lettering - 5 star 1 6203 $2.50 GE 110%/110% --- used (L) (M7) white lettering 1 6203 $2.50 unknown 110%/115% --- used (L) (M7) --- 1 6203 $2.50 unknown 105%/120% --- used (L) (M7) --- 1 12X4 $5.00 RCA 120%/110% --- NOS (OB) (M7) red lettering 1 12X4 $5.00 RCA 115%/120% --- NOS (OB) (M7) red lettering 1 12X4 $5.00 RCA 110%/110% --- NOS (OB) (M7) red lettering 1 12X4 $5.00 RCA 110%/110% --- NOS (OB) (M7) red lettering 1 12X4 $5.00 RCA 115%/115% --- NOS (OB) (M7) red lettering 1 12X4 $5.00 RCA 110%/110% --- NOS (OB) (M7) red lettering 1 12X4 $5.00 RCA 110%/110% --- NOS (OB) (M7) red lettering 1 12X4 $5.00 RCA 110%/110% --- NOS (OB) (M7) red lettering 1 12X4 $5.00 RCA 115%/115% --- NOS (OB) (M7) white lettering - worn box 1 12X4 $4.00 GE 120%/120% --- NOS (OB) (M7) white lettering 1 12X4 $4.00 GE 110%/115% --- NOS (OB) (M7) white lettering 1 12X4 $4.00 GE 120%/115% --- NOS (OB) (M7) white lettering 1 12X4 $4.00 GE 120%/120% --- NOS (OB) (M7) white lettering 1 12X4 $4.00 GE 120%/120% --- NOS (OB) (M7) white lettering - box flap missing 1 12X4 $4.00 GE 115%/115% --- NOS (OB) (M7) white lettering 1 12X4 $4.00 GE 115%/110% --- NOS (OB) (M7) red lettering - water damaged box 1 12X4 $4.00 Sylvania 120%/120% --- NOS (OB) (M7) yellow lettering 1 12X4 $4.00 Sylvania 115%/115% --- NOS (OB) (M7) yellow lettering 1 12X4 $4.00 Sylvania 115%/115% --- NOS (OB) (M7) yellow lettering 1 12X4 $4.00 Sylvania 110%/110% --- NOS (OB) (M7) yellow lettering 1 12X4 $4.00 Sylvania 110%/120% --- NOS (OB) (M7) yellow lettering 1 12X4 $4.00 Motorola 110%/110% --- NOS (OB) (M7) --- 1 12X4 $4.00 Motorola 110%/110% --- NOS (OB) (M7) --- 1 12X4 $4.00 Motorola 110%/110% --- NOS (OB) (M7) --- 1 12X4 $4.00 Motorola 110%/110% --- NOS (OB) (M7) --- 1 12X4 $4.00 Motorola 110%/110% --- NOS (OB) (M7) --- 1 12X4 $4.00 Motorola 110%/110% --- NOS (OB) (M7) --- 1 12X4 $4.00 Motorola 110%/110% --- NOS (OB) (M7) --- 1 12X4 $4.00 Motorola 110%/105% --- NOS (OB) (M7) --- 1 12X4 $4.00 Motorola 120%/110% --- NOS (OB) (M7) --- 1 12X4 $4.00 Motorola 115%/115% --- NOS (OB) (M7) --- 1 12X4 $4.00 Raytheon 120%/115% --- NOS (OB) (M7) --- 1 12X4 $4.00 Raytheon 110%/110% --- NOS (OB) (M7) --- 1 12X4 $4.00 Dumont 110%/110% --- NOS (OB) (M7) --- 1 12X4 $4.00 Zenith 115%/115% --- NOS (OB) (M7) --- 1 12X4 $4.00 CBS 110%/110% --- NOS (OB) (M7) --- 1 12X4 $4.00 CBS 120%/110% --- NOS (OB) (M7) torn box flap 1 12X4 $4.00 Triad 120%/125% --- NOS (OB) (M7) --- 1 12X4 $4.00 Westinghouse 110%/110% --- NOS (OB) (M7) --- 1 12X4 $4.00 GE 110%/110% --- NOS (wb) (M7) white lettering 1 12X4 $2.00 Delta 110%/110% --- used (rb) (M7) --- 1 12X4 $2.00 Automatic Radio 110%/110% --- used (rb) (M7) --- 1 12X4 $2.00 unknown 110%/120% --- used (rb) (M7) --- 1 12X4 $2.00 unknown 100%/100% --- used (rb) (M7) --- 1 12X4 $4.00 RCA 110%/105% --- used (OB) (M7) red lettering 1 12X4 $4.00 Dynaco 110%/105% --- NOS (OB) (M7) --- 1 12X4 $4.00 unknown 110%/110% --- NOS (OB) (M7) --- 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. Contact MDB Ventures sales@mdbventures.com Due to the highly volatile nature of the tube business, all Prices are subject to change without notice. Go back to the TOP Audio Vacuum Tube List Shipping and Handling Information MDB Ventures Home Don't forget to visit our Discount Bargain Packs and Bargain Bin for more savings! Email: MDB Ventures sales@mdbventures.com