Strong Pair ECC82 12AU7 Valves Tubes. Mullard Foreign, Made in Japan. Fully Tested on AVO VCM 163. Long Grey Plates, Halo Getters.
eBay
PSVANE Vacuum Tube ECC83 12AX7 12AU7 ECC82 ECC81 12AT7 EL84 Electronic Precision Matching Amplifier High Fidelity Matched Quad
Aliexpress UK
2 x 12au7 Mullard Tubes. Tested on enhanced Triplet E3444 Laboratory Tester by Paul Hart of Roswell Ga. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable.
eBay
PSVANE Vacuum Tube ECC83 12AX7 12AU7 ECC82 ECC81 12AT7 EL84 Electronic Precision Matching Amplifier High Fidelity Matched Quad
Aliexpress UK
Date codes k61 B7L & k61 B5I. Pair of Mullard 12AU7 long plate tubes with square getters. These feature the older shield logo and 1955 & 1957 date codes. These test in the 80-90% range, and check quiet on the Amplitrex AT1000.
eBay
6SN7 CV181 To ECC83 12AX7 ECC82 12AU7 ECC81 12AT7 7025 CV4003 CV4004 5751 Vacuum Tube Amp Convert Socket Adapter 6.3V or 12.6V
Aliexpress UK
The Electro Harmonix Balanced ECC82 preamp valve is also known as a 12AU7. It can of course be used in any preamp position that requires a 12AU7 valve. Electro Harmonix Balanced EH ECC82 12AU7 valve.
eBay
9pin Bakelite Vacuum Tube Socket Valve Base for E80CC,6DJ8,EL84, 6922 ,6BM8,12AX7,12AU7,12BH7,12BY7,ECC83,7188 Amplifier DIY
Aliexpress UK
5814 JAN CHS. SYLVANIA USA.
eBay
Latest 101D tube preamplifier, EIZZ 24-speed 100K potentiometer, frequency response: 15HZ-40KHZ, 12AU7*2, 5AR4*1
Aliexpress UK
12AU7 ECC82 RCA. 17mm PLATE.
eBay
HiFi Remote Control Volume Preamp 12AU7 / ECC82 Tube Stereo Preamplifier Base On CARY-SLP90 Preamp Circuit
Aliexpress UK
I am selling a pair of these lovely tubes from my collection. I have owned them for 10 years and they test as new, I have tried them in my Audionote M8 preamp and they are extremely quiet no microphony at all. Matched pair Amperex long plate 17mm, D-foil getter, Top seams. Originally labelled Beckmann but label is now mostly erased These have the CT0 marking etched into the glass designating them to be the 7316 variant Tube 1 Delta 8K 1958 Tube 2 Delta 8I 1958 As measured on my VCM 163 tube tester Ma and Gm for each section shown below Tube 1 A1 10ma; A2 11ma: A1 2ma/V; A2 2ma/V Tube 2 A1 12ma; A2 11ma: A1 2.3ma/V; A2 2.2ma/V Where new tube is 10ma gm 2.2
eBay
MOFI-12AU7/12AX7-Tube Buffer Pre-Amplifie-DIY KIT
Aliexpress UK
Warm, spacious, and smooth sound with good detail, clear bass, and soft highs
eBay
Musical Paradise MP-701-MK3 Pre Amplifier 6Z5P 5R4 6N11 12AU7 Vacuum Tube Pre Amplifier Voltage Selection 110V-120V / 220V-240V
Aliexpress UK