Audio Note Kits Forum

question for PQ (and for whom wants to contribute)

89.202.144.42

In Reply to: RE: Kit1 2A3 experience (vs 300B if useful) posted by GTCharlie on October 21, 2009 at 21:23:22

thanks you for your interest.

I have a very recent Kit1 (signature version + TKD + ELMA upgrades) with AN Improved HiB OPTs (you can find it's picture on ANK site), so 2K7 on primary.
Switching to 2A3 would simply require to:
- change 4 resistors on the same heater board you see in monoblocks
- change mains HT voltages (different wires for 2A3 and 300B operation, 5687 and 6SN7 voltages will be reduced a little too...)
- buy and change power triode

in my experience 300B focus is on instruments against voice (Kit1 with Sovtek 300B 90hrs burn in), 2A3 has the opposite behavior with tighter bass and some roll off on highs (other brand amplifier). I have 102db speakers (down to 34Hz), power is not an issue at all.

the questions are:
- does Kit 1 performs equally better in 2A3 or in 300B mode?
- which power triode would be the most accurate according to comparison by contrast method in Kit1 circuit with Tantalum, black gates, AN copper Caps and HiB OT components?

I have to choose between buying a better 300B tube that has more focus on mids and less bass related to Sovtek, or to switch to a very good 2A3.

thanks a lot in advance.

Follow Ups:

RE: question for PQ (and for whom wants to contribute) - Frank E 10:22:20 10/22/09 (0)

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