Amperex 12AU7 - matched quad
dragon1952
Posts: 4,899
These are Amperex labeled, made in the USA 12AU7A/ECC82's's. They have red printing and a red globe logo. I bought them NOS/NIB from Dougs' Tubes a couple years ago but they've been in and out of my system so they've only got maybe 300-400 hrs on them, if that. Doug sells them for $18 per tube with matched triodes. I think I paid a couple dollars less for them ...around $70 shipped for the quad. These are labeled 80/80, 80/80, 80/80, 80/75.
http://www.dougstubes.com/12au7.html
These have a very nice bottom end in my system and I would call them a shade on the warm side. Good vocals and mids. Not quite as sparkly or detailed on top as some. I have been very happy with them but with my new Von Schweikert VR-1's I can get away with a brighter, more detailed tube like the RCA Cleartops, although I am giving up some bass which sucks.
Anyway, there is very little information on these out there. I don't know if they were actually made by Amperex at their US factory, or by someone like Richardson (which I've seen a reference to) or RCA and then labeled for Amperex. Regardless they are nice tubes with low mileage and if you're into tube rolling you might want to give them a shot. I'll sell them for half of what I paid, so $35 shipped.
http://www.dougstubes.com/12au7.html
These have a very nice bottom end in my system and I would call them a shade on the warm side. Good vocals and mids. Not quite as sparkly or detailed on top as some. I have been very happy with them but with my new Von Schweikert VR-1's I can get away with a brighter, more detailed tube like the RCA Cleartops, although I am giving up some bass which sucks.
Anyway, there is very little information on these out there. I don't know if they were actually made by Amperex at their US factory, or by someone like Richardson (which I've seen a reference to) or RCA and then labeled for Amperex. Regardless they are nice tubes with low mileage and if you're into tube rolling you might want to give them a shot. I'll sell them for half of what I paid, so $35 shipped.
2 channel - Willsenton R8 tube integrated, Holo Audio Spring 3 KTE DAC, audio optimized NUC7i5, Windows 10 Pro/JRiver MC29/Fidelizer Plus 8.7 w/LPS and external SSD drive, PS Audio PerfectWave P3 regenerator, KEF R3 speakers, Rythmik F12SE subwoofer, Audioquest Diamond USB cable, Gabriel Gold IC's, Morrow Audio SP5 speaker cables. Computer - Windows 10/JRiver, Schiit Magni 3+/Modi 3+, Fostex PMO.4n monitors, Sennheiser HD600 headphones
Post edited by dragon1952 on
Comments
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Sold.CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.
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Yep those were too cheap to pass up but I didn't have a use for them.
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Me neither, get lost.CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.
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I was like the 7th person to view the thread but I didn't want to be a tube hog
