12AU7
The 12AU7 is a medium-mu twin triode miniature glass tube. In most circuits it is used as a class A amplifier per triode section. This tube has been, and still is, widely used in the preamplifier stages of high fidelity audio equipment, musical instrument amps, public address equipment, and broadcast equipment. It was used in so many different types of equipment that the vintage versions of this tube are still available without too much searching. Like their cousin, the 12AX7, the premium USA and West European brands are being hunted to extinction, but there are still bargains to be had in other vintage USA brands
 5pcs RCA 12AU7 tubes NOS 1960  US $75.00
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 Special for Tripath 12AU7 Buffer Amp for smooth sound US $38.99
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 Shuguang Beijing 12AU7 Pre Amplifier Tube 2 pcs US $19.00
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 12AU7 La Radiotechnique Tube French Philips Mullards US $44.99
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 Electro Harmonix 12AU7 pre amp tubesGold Pin NEW US $19.99
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 JJ electronics preamp tubeECC802SBest 12AU7BRAND NEW US $15.99
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 Sylvania Gold Brand 5963 12AU7 Gold Pin tubes Good US $24.99
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 JJ Gold Pin preamp tubes ECC82 12AU7 BRAND NEW US $23.99
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 NOS 12AU7 tubes by French Military by Mazda CIFTE New US $39.99
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 JJ Gold Pin preamp tubesECC802 Best 12AU7 BRAND NEW US $27.99
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 JJ Tesla 12AU7 ECC82 preamp tubes NEW US $11.99
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 6 RCA 12AU7 ECC82 black plate tubes tested lot D40 US $17.10
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 125 NOS USED 12 volt AA5 Tubes 50C5 12AT7 12AU7 35C5 US $41.00
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 Vintage Sylvania preamp 12AX7 12AU7 12AT7 pre amp valve US $5.00
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 Mullard EL34 6CA7 ECC82 12AU7 Blackburn Xf3 US $19.50
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 pair 2 Telefunken ECC82 12AU7 US $66.00
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 lot 26 tested 12Au7 vaccum tubes US $30.00
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 ONE NEW Tube adaptor 12AU7 to 6SN7 free shipping world US $16.99
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 vintage tested 12AU7 telefunken vacuum amp tube US $36.00
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 Matched Pair telefunken 12au7 tubes tested good qa US $80.00
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 2X Match Sylvania Black Plate D getter JAN 12AU7 ECC82 US $24.95
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 Match Sylvania Black Plate D getter JAN 12AU7 ECC82 US $14.95
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 5814 GE JAN Audio Vacuum Tubes 6 pcs USAF 12AU7 T NEW US $16.95
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 ECC82 12AU7 MULLARD ENGLAND LONG PLATE 1950s TESTED US $19.99
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 ECC82 12AU7 MULLARD ENGLAND 60S TESTED US $9.99
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 MATCHED PAIR 12AU7 12AU7A ECC82 RCA CLEAR TOP LP USA US $9.99
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 2 Telefunken 12AU7 ECC82 Tubes Smoothplates with US $22.50
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 5 JAN 5814 12AU7 Sylvania Tubes NOS US $150.00
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 812AX7 12AU7 9 Pin AMPS Silver TUBE SOCKETGZC9 F US $9.99
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 Quad NOS NIB Matsushita 12AU7 6680 Audio Tubes Date Mch US $49.00
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 2 MAZDA CIFTE 12AU7 3 MICAS TESTED US $99.00
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 Philips ECC82 12AU7 pair matched audiotubes nos nib US $74.50
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 VINTAGE RADIO AUDIO TV MULLARD ECC82 12AU7 VALVE TUBE US $8.24
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 12AU7A two 2 amp vacuum tubes Sylvania tested 12AU7 US $9.99
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 MULLARD CV4003 ECC82 12AU7 TUBE VALVE MILLITARY SPC NOS US $9.74
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 4 x ECC82 12AU7 NOS RFT TWIN TRIODE AUDIO VALVES TUBES US $59.94
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 2 SYLVANIA 12AU7A 12AU7 ECC82 Amp Vacuum Tube Red Label US $23.95
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 SYLVANIA 12AU7A 12AU7 ECC82 Guitar Amp Vacuum Tube US $12.88
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 CBS 12AU7A 12AU7 ECC83 Guitar Amp Vacuum Tube D GET 50s US $9.95
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 2 NIB 67 Sylvania JAN 6189 Electron Tubes 12AU7 Amp US $19.99
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 12AU7 RCA Black Plate Used Tested No Reserve US $3.00
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 2 x TUBES TELEFUNKEN ECC82 SEALED NEW 12AU7 US $230.00
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 VINTAGE THE FISHER TUBE AMP 80 AZ W 2 EL37 2 12AU7 US $122.50
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 JJ ECC99 2X Tall 12AU7 New In box US $13.99
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 6Gold 9 Pin Tube Socket for 12AX7 12AU7 6GJ8 EL84 9AG US $16.99
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 6pcsVacuum Tube 9 Pin Socket for 12AX7 12AU7 ECC839YG US $16.99
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 5Radio Tube 9 Pin Panel Socket 6DJ8 12AX7 12AU7C9Y US $9.99
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 6GOLD Valve Tube 9 Pin Panel Socket 12AX7 12AU7Y3G US $16.99
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 2 x ECC82 12AU7 NOS RFT TWIN TRIODE AUDIO VALVES TUBES US $22.00
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 RARE SIEMENS GOLD PIN E82CC ECC802S 12AU7 TUBE US $1.25
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 4 x ECC82 12AU7 NOS TUNGSRAM TWIN TRIODE VALVES TUBES US $49.99
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 69 Pin Tube Shield Cover 12AX7 12AU7 6CU7 ECC829GR US $9.99
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