What are the weak points of Pass amps and pre-amps ?

audiotroy, please, enough of your participation, we get all your points even before you posted. If you want to advertise yourself in this thread - pay us, cost - $1 per letter. If you disagree - get the f. out.

As usual Troy, you hijacked a thread to push your wares.

I like meters also.  Just think that new coda looks like tic tac toe board.  I’m sure it sounds great. I’ve stated that elsewhere. 

Hell I’ve talked to Doug, he’s a good guy.  He thinks meters are useless, but knows the market likes them.  

I answered the OPs original question.  You hijacked a thread again.

Yes, T+A and Coda make nice products.  I’ve owned Coda and demoed T+A.

I mentioned the heat and weight, as I was answering the question. 

So, so far no real weak points, just a few minor weaker points.
But no-one described Pass Class A and Class AB differences in details yet. Anyway, one can get Pass pre/power amps used for $5k-$6k for both. Pretty good.