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Jolida 202a Tube Rolling Question 12ax7 12at7

Hi guys, a while back I purchased a jolida 202A to power my desktop speakers. I like the combination very much for accoustic/percussion music as nothing can quite beat it. However my $200 14 watt hong-kong amp is better for rock.
Before testing the other amp I thought it was simply a property of the speakers. But after putting the Jolida in my main setup I'm experiencing the same downfalls.

I don't really know how to pick tubes in order to get the qualities I'm looking for, so I was hoping that you guys could help out.

What I like about the sound now:
-Crisp details throughout the frequency spectrum
-Very speedy attack and decay on accoustic instruments

What I don't like:
-Very dry quality in the upper mids / lower HF
-Not enough tube bloom and warmth, too sterile
-The distortion at high power isn't like my little class A, (which just tends to get more blended and bloomy) but instead sounds rather grating in the high end and loses the bass.

Tubes I'm using right now:
4x JJ E34L's - Power
2x Electro-Harmonix 12ax7's in the preamp circuit
2x PhillipsECG 12AT7's as power drivers

I believe that the amp originally came with 4x 12AT7's though.
robxmccarthy

Showing 1 response by telescope_trade

telescope_trade
555 posts
 
Hmmm...Robx,

I recieved my TS 12AX7's today for my 302BRC and although
they improved the bass & center image, they are a bit
hard, and I lost the air that my Dali's have a ton of
that I love. I was blaming burn in, but since you have
burnt yours in, and have basically the same effect, I will
look for other tubes as well. I am trying to improve
on the stock 12AX7's (Which I assume are Sovteks??) but
I put them back in, and the magic came back to the Dali's.
Let me know what you find that you think is better
than the stockers. Maybe some Telefunkins or Mullards??

Bob
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