12AX7
The 12AX7 is a high-mu twin triode which operates in typical service as a class A amplifier, in the preamp stages of high fidelity, musical instrument, and public address amps, as well as professional line and microphone preamps, and many other audio and communications devices. The demand for the vintage USA and European versions of this tube are beginning to outstrip the supply, and, as a buyer, you need to carefully consider what is available, the device you will use it in, and what your budget allows. The highly regarded vintage brands of Telefunken, Mullard, Amperex, and RCA come at an appropriate premium price over other brands. While this higher price is justified (these tubes sound wonderful and are very long lived) other vintage brands are often just as good. Brands like GE, Sylvania, Tung-Sol, Motorola, Raytheon, and Zenith are often overlooked, but usually perform just as well as the more famous vintage brands, which makes them a terrific value, especially as the stocks of New Old Stock (NOS) tubes vanishes. Indeed, some of these were made by RCA for these other labels, and others like the Tung-Sol and Sylvania have their own followers who prefer these brands over the higher priced premium labels. There is intense hype out there about the 12AX7, and even some absolute fantasies. Some of the European labels have strong snob appeal, which can cloud accurate judgment of these very good tubes, and many self-proclaimed tube experts have either praised or shot down some vintage brands which deserve neither. If you are new to tubes in general, or are replacing a set of Russian or Chinese current production 12AX7 tubes with vintage NOS, you would do well to try several different brands and hear for yourself the sonic nuances. Then you would be well advised to lay in a stock of the brand of your choice "for a rainy day".
 30 RADIO TUBES VINTAGE TUBE LOT 6CG7 12AX7 50C5  US $19.99
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 6N2P Voskhod STRONG MATCHED PAIR TUBES ECC83 12AX7 US $29.99
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 2 matched 1964 66 RCA 5751low mu 12AX7ECC837025tube US $42.00
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 NEW 12AX7B GUITARPREAMP VACUUM TUBES 12AX7ECC837025 US $9.99
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 69 Pin Tube Shield Cover 12AX7 12AU7 6CU7 ECC829GR US $9.99
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 5Valve Tube 9 Pin Panel PCB Socket for 12AX7 12AU79Y3 US $9.99
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 Electro Harmonix EH 12AX7 12AX7EH Tube x 2 pcs US $37.79
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 PAIR Marshall Fender Tube 12AX7 ECC83 Valve Tungsram US $31.00
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 15 WHITE TUBE BOXES 12AX7 US $3.95
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 Russian 6N2P 12AX7 ECC83 Tubes 100 pcs US $110.00
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 OLD MARSHALL ECC83 12AX7 VACUUM TUBE US $.99
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 NOSIB PHILIPS MINIWATT 1958 12AX7 D GTR FOIL STRIP US $220.00
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 ECC83 12AX7 OLD GERMANY VACUUM TUBE US $.99
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 6N2P EV 12AX7 ECC83 Tubes Lot of 16 RARE US $30.00
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 ECC83 12AX7 RFT TUBES MATCHED PAIR TESTED US $59.99
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 2 Tubes Valvo Philips ECC83 12AX7 Tube 90° Getter US $29.00
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 2 Tubes Telefunken ECC83 12AX7 ecc 83 Tube ribbed match US $99.00
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 12AX7 VACUUM TUBES Lot of 6 used tested No reserve US $18.50
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 12AX7 x 2 MHZS CD 88F 24bit 192kHz Tube CD Player US $889.00
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 Three NEW Tung Sol Gold 12AX7 re issueTubes tungsol US $64.50
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 2 audio tubes ECC83 12AX7 TELEFUNKEN ribbed plates US $36.00
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 2 audio tubes ECC83 12AX7 VALVO Hamburg Germany US $10.49
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 4 Telefunken 12AX7 ECC83 tubes tested lot C61 US $100.00
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 Sylvania Champ Valco Tubes 6V6GT 12AX7 5Y3GT US $39.00
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 Pair Telefunken 12ax7 ecc83 Tubes Smooth Plate Matched US $61.00
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 12AX7 Sylvania EVH NIB Matching Pair ECC83 Nice US $74.99
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 6N2P Voskhod STRONG MATCHED QUAD TUBES ECC83 12AX7 US $29.99
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 RAYTHEON 12AX7 ECC83 BLACK RIBBED PLATE USA TUBE US $34.99
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 MATCHED PAIR TOSHIBA 12AX7 ECC83 RIBBED PLATE TESTED US $59.99
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 Six GE JAN 5751 Tubes 12AX7 NOS US $26.00
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 Four GE 5751 Tubes 12AX7 NOS US $22.29
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 2 Tung Sol made 12AX7 close matched audio tubes US $15.51
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 JVC Nivico stereo hifi tube receiver AST 220E 12ax7 WOW US $.99
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 McIntosh mc 240 mc240 stereo 6L6 tube amplifier 12ax7 US $765.99
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 RARE 1957 MULLARD LONG PLATE SHIELD LOGO 12AX7 ECC83 US $14.00
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 4 NOS TUBES 6N2P 12AX7 ECC83 MATCHED QUAD US $6.00
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 PAR TUBES ECC83 12AX7 ULTRON GOODS US $6.50
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 Three Mullard 12Ax7 ECC83 CV4004 Square Plate Tubes US $49.00 |
 MATCH PR NOS NIB RAYTHEON BLACK PLATE 12AX7 AUDIO TUBES US $9.95
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 50Vacuum Tube 9 Pin Shield Socket for 12AX7 12AU7G55 US $99.00
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 4Vacuum Tube 9 Pin Shielded Socket for 12AX7 12AU7G55 US $11.99
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 Group Of Vacuum Tubes 12AX7 12AU7 6189 12AT7 6201 More US $14.95
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 one 12AX7 Telefunken Tube one Bugle Boy 12AX7 ECC83 US $9.99 |
 BK Butler Tube Works TUBE DRIVER Tung Sol 12AX7 US $90.00
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 TWO NOS BOXED MULLARD 10M MASTER SERIES ECC83 12AX7 US $345.00
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 Group of Vacuum Tubes 12AX7 6X4 12AU7 12BA7 6EC4 7025 US $26.09
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 Eight NEW jj ECC83S 12AX7 Preamp Tubes US $88.99
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 Three NEW jj ECC83S 12AX7 Preamp Tubes US $35.99
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 8 NOS TUBES 6N2P 12AX7 ECC83 MATCHED OCTET US $9.99
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 4 NOS TUBES 6N2P EV 12AX7 ECC83 TESTED SET US $5.99
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 Mars Heated Tube Distortion 12AX7 Powered US $94.95
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 2 MATCHED BALANCED PAIR SYLVANIA 5751 TUBES 12AX7 5751 US $31.00
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