Let's Get Technical > Tubes (preamp/Input/Buffer)

Tubes for 3TM?

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rickeb1:
Hey guys, I have a MP-1 with the 3TM mod, and have been using the Sovtek LPS tubes in it.  I'm generally happy with them, but lately I've been thinking that maybe they are a bit harsh.  They do have a big sound and a lot of gain, which I like.  I've tried JJs, but I felt like they were too weak sounding.  I know Richard likes the Mullards in the MP-2 :), but I wonder how they might sound in a 3TM?  I'm thinking of trying Tung Sols, but I thought I'd check here to see what tubes others are using in their 3TMs.

Thanks!

~ Rick

rnolan:
Hey Rick, El and I were hassling MJMP to try some Mullards in a 3TM, I don't think he got round to it yet.  IIRC he likes the JJs. The Tung Sols wouldn't be a bad choice but from what you describe the Mullards should work well, they are known for taming harshness and are definitely not weak, plenty of warm body and silky highs. Or you could try a combination, maybe a Mullard in V1 may tame the harshness of the Sovteks. MikeB has a Mullard short plate in V1 and a JJ (Boogie SPAX7) in V2 in his MP1 and that works well.  I found the Mullard long plates really suit my playing and have really fallen for them (as most here know LoL).  I'd like to know how they sound in a 3TM, my guess is they would work well.

Cheers R

MarshallJMP:
Well i use JJ's but the Ruby ones (12AX7ACZ H.G.).Since they are tested by Ruby they will sound better then off the shelf JJ's.

El Chiguete:
Yep Marshall get around on doing the field test for the depot's sake! jeje

Systematic Chaos:
The TungSols, while being a really nice and bold sounding tube, tend to have a high fail rate in MP1s (there was some long thread on the old Depot....)

The closest current production tube to the original "Chinese Nationals" that the MP1 was designed around are TAD RT001 12AX7A-C.....I like them a lot in combination with NOS Blackburn Mullards.

--- Quote from: trader144 on November 02, 2014, 03:32:31 PM ---FWIW, I have tested the tubes SC recommended: TAD 12AX7A-C RT001

I agree with SC, they sound very, very close to the original MP-1 tubes. Hope they last as long.

--- End quote ---

+1 also for the Mullard Reissues (long plates) which I would use in the 1st tube slot to set the "overall character" and then using the TAD in 2nd and 3rd....

The Sovtek LPS has only one good use in my book...that's the Phase Inverter in poweramp stages.
This is what the LPS does better than almost any other.....

Just my 2 €-cents

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