Best 12AU7 Type Tubes for a Preamp


I am hoping for some help finding good quality and good sounding 12AU7 variant tubes for a preamp – I need two tubes. A price of around $100 each or less would be great but I would pay a bit more (150 ea.) for something that is likely to sound better. The unit came with JAN PHILIPS ECC82 (12AU7/5963) and I also own a pair of reissue/new Mullard ECC92 tubes. Both sets are quiet but I am wondering if there is something even better sounding at a moderate price.

Readily available NOS options I have seen include:

  • NOS RCA Blackplate or Clear Top at about $100-150 EA.
  • Amprex 7316/ECC186 at around $150 each, and
  • Mullard CV4003/12AU7 $150ea.

New options I have found (in addition to Mullard) include (among others):

  • Genalex - Gold Lion B749 / ECC82/12AU7, $70 ea.
  • Psvane 12AU7-S Art Series ECC82, $55 ea.

Thanks for any help.

mitch2

Mitch,

Definitely NOS only, nothing newer is even close…..70s &  80s, can be very very  good, 50s and 60s can be magical…..though with some tubes dating can be difficult.

I’ll find my notes and repost in next couple of days. I went through a manic phase and have tested at least 30 types (I think I still have 40+ pairs?), I also I had an amazingly thorough link I’ll try to find if I can

"My favourites are NOS Mullards or Telefunkens."

Fascinating response in that the two are polar opposites sound-wise.

DeKay

I installed matched NOS Telefunken smooth plates into my Rogue M-180s two days past. They will need some break in time but so far I like them more than the JJ tubes I replaced so I anticipate I will like them more and more as time passes.

I also have a matched set of NOS Raytheon Black plates sitting in a box and will roll them into the M-180s in a couple months. I will also use these in my Rogue RP-7 some time down the road. 

Here is a good reference for the 12au7 rolling options.

 

Mazda gray plates were pretty nice in my Luxman CL-38uC. 

I preferred them over the Amperex 7316, or Brimar CV-4003.