Originally Posted by
yolakim
I replaced an 868PL with Tom’s 912 and can confirm that the line stages do indeed sound very different. I was quite taken aback, having ingested the “essentially the same circuitry” line. I’m not really qualified to say if it is or is not physically, but the 912 sounds significantly better.
There is a chance that Tom had installed better SQ valves, but the valve type/brand was the same and I would not expect the difference to be so pronounced.
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