NOS 12ax7's for all tube bass amps

my sunn had ancient rca tubes that sounded great

 

NOS is a bit of a con, much better to get old tested valves, run them through a tester, they aren't new any more. What the valves do to the sound is down to the circuit they are in. Generally, I use tested old stock chinese military valves in my stuff, prefer the sound to the various mullards and old stuff I have to hand.

 

I have used, but testing close to new Telefunkens and there is was a huge difference. It really tightened up the low end and added clarity. That's what I'll be buying in the future.


Michael

 

I have some nice RCA black plates that sound really good. Have had some GE's. Also have run some Telefunken 12au7's, Amperex and Mullards...

Really want to try some Telefunken 12ax7's..

 

Call these guys tell them what you want for sound wise.

 

I really enjoy the RCA 7025 tubes in my bass amps. The RCA 12AX7's sound great as well. Awesome warm wonderful bass tone.

I really like the Telefunken 12AX7's as well, Super clear and defined.

I also use the Amperex 12AX7's as V1 in my Sunn heads. These just sound best for my Sunn heads, I generally use RCA's for all the rest of the pre-amp tubes.

I have and have tried most of the NOS 12AX7 tubes and my recommendation to you would be to get yourself a variety and try out a bunch till you find the one that sounds best. Each of my amps sounds best with a different combination of tubes.

 

I put a couple of (tested) NOS Sylvania-Baldwin 12AX7s in my 100T. They sound very good. Also installed new SED Winged C 6L6s. I'm quite happy with the result.

Dan

 

I found some NOS RCA's and put them in everything I own, and yes, it is a really cool difference. Just sounds better. It won't make a ****** amp sound great, but it will make a good amp sound even better.
Biggest difference was in the microphones. I swapped out the JJ that I put in there a couple years ago with the old RCA, and wow, HUGE difference. Those mics sounded good before, but with the old tube in there, they had a much nicer sound. Just more pleasant.

 

Yeah, the Sunn heads are great for rolling tubes through, pretty much any tube head that goes clean and loud is good for that.
The Amperex in the Sunn just warms and smooths out the tone, not much different than an RCA, but after going back and forth several times I ended up digging the Amperex just a tiny bit more. This is in a Sunn 2000s head.

If you play the Sound Cloud link in my sig...that is a Hiwatt DR-201 with all RCA pre amp tubes and a set of JJ KT88 power tubes, played through an Ampeg SVT15E cab.

 

In my Orange AD200B, V1 is for a Tele 12ax7, and V2 is for a Matsupoopiea 45deg Getter 12Ax7. Nice combo!!

The tele adds a clarity and a definition that is just a solid ground and lets your bass sing, whithout coloring too much. The Matsu adds warm mid lows that are also great.

Best,

Alex

 

I have been running Matsupoopiea 12AT7's in the phase inverter section of my amps for a while now, I really like them. Have yet to try their 12AX7 versions yet.

 

As you may know, matsus are mullards on the cheap! ( ;

 

http://www.thetubestore.com/Resources/Product-Reviews/12AX7-Tube-Review

http://tubedepot.com/12ax7reviews.html