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".
 2x 12AX7 ECC83 GE Röhre Tube Lampe TSF Valvola NOS  US $199.99
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 30uf 150v ac cap 6dj8 6l6 6v6 12ax7 7189 6sn7 6bq5 use US $19.99
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 Two Genuine Fender 9 Pin J Slot Tube Shields For 12AX7 US $6.99
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 SUPRO 1950s Premium Tube Set Guitar Amp 12AX7 US $28.77
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 12AX7 12AU7 To 6SN7 6SL7 Tubes socket Adapter US $11.90
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 2 x ECC83 TUBE GERMAN OLD FAT BOTTLE 12AX7 US $9.50
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 SHUGUANG SILVER DRAGON 12AX7B VACUUM TUBE VALVE 12AX7 US $6.79
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 2 MATCHED BALANCED 12AX7 ECC83 Ei TUBES Silver Bullets US $84.99
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 Peavey JSX Joe Satriani Premium Tube Set 12AX7 EL34 US $115.17
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 9 PIN MINIATURE TUBE SOCKET INSERT NOS Fits 12AX7 USA US $.99
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 Power Transformer 4x 7355 Tubes 12Ax7s 6AU6s US $70.00
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 MATCHED QUAD Sylvania 12AX7 ECC83 dual triode tubes US $52.99
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 MATCHED PAIR VALVO ECC83 12AX7 NOS TUBES US $199.99
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 MATCHED PAIR TESLA E83CC ECC803S 12AX7 ECC83 GOLD PINS US $159.99
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 Two NEW Tung Sol Gold 12AX7 re issueTubes tungsol US $42.99
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 Eight NEW EH 12AX7 Tubes electro harmonix ecc83 US $98.99
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 Eight NEW jj ECC83S 12AX7 Preamp Tubes US $88.99
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 PAIR OF BALDWIN SYLVANIA 12AX7 7025 TUBES FRESH PULLS US $45.00
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 2 NOS NIB Tubes ECC83 12AX7 BEL India 1960s US $36.00
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 2 NOS NIB Matched Tubes ECC83 12AX7 BEL India 1960s US $48.00
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 2 Tubes ECC83 12AX7 BEL India 1960s Tested US $30.00
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 2 NOS NIB Tubes ECC83 12AX7 BEL India 1960s Tested US $34.00
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 NOS RCA 12AY7 6072 12AX7 ECC83 TUBES for Fender Pro US $89.97
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 mid 60s bk mullard 12ax7 ecc83 tests 100 US $75.00
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 2 VOICE OF MUSIC VM 7025 12AX7 PRE AMP TUBES US $25.00
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 Groove Tubes GT 12AX7 M GT12AX7M Mullard reis ECC83 NEW US $17.56
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 Westinghouse 12AX7A 12AX7 A ECC83 valve vacuum tube US $1.52
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 12AX7 Pre amp tubes Made in USA used as is cheap US $7.00
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 12AX7 ECC83 6N2P EV TUBES Lot of 10 NEW US $19.50
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 Chassis Mount Tube Socket With PC Blades For 12AX7 Etc US $1.99
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 Fisher Power Transformer 2x EL84 5u4 12ax7 6u8 tubes US $60.00
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 9 PIN CINCH WAFER TUBE SOCKET B9A NOVAL 12AX7 NOS USA US $1.25
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 2 Matched JJ Tesla ECC83S 12AX7 12AX7A Gold PinTubes US $60.00
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 Peavey Triple XXX Premium Tube Set 6L6GC 12AX7 US $107.97
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 SLEEVE OF FIVE PENTA 12AX7 TUBES US $59.00
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 2 Mullard ECC83 12AX7 Audio Radio Tubes US $40.99
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 VINTAGE OLD LORENZ ELECTRON TUBE NO 12AX7 9 PIN US $1.99
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 NEW JJ Tesla 12AX7 ECC83 Pre Amp Tube US $10.44
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 NEW JJ Tesla 12AX7 ECC83 Pre Amp Tubes Set of four US $37.99
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 NEW JJ Tesla 12AX7 ECC83 Pre Amp Tubes Set of three US $30.39
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 1 Early Vintage Black Plate 1956 RCA 12AX7 ECC83 Tube US $6.95
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 1 Matched Pair 50s 60s GE 12AX7 ECC83 GE Tone Pack US $9.95
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 JJ Tesla 12ax7 ECC83 Gold Pin Tubes US $30.06
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 Mullard 12AX7 ECC83 7025 New Vintage Reissue TONE US $15.00
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 8For 12AX7 6N1P 6N2P AU7 9 Pin Ceramic TUBE SOCKET9PC US $14.99
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 FIVE NOS VINTAGE GE 12AX7 ECC83 PRE AMP TUBE US $103.75
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 Pair Raytheon 7025 12AX7 tubes black plate test good US $19.99
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 1 NOS 1961 RCA Black Plate 5751 Vacuum Tube 12AX7 upgrd US $13.26
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 9 PIN WAFER TUBE SOCKET SOLDERLESS NOS Fits 12AX7 USA US $1.50
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 GE 12AX7 ECC83 Fender Guitar Amp Preamp Tube INDUSTRIAL US $34.95
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 1pc ShuGuang Electron Vacuum Tubes 12AX7 ECC83 US $10.50
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 1 1961 CBS 7025 low noise 12AX7ECC83 tube Gray P D US $33.95
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