Class A amplifier choice, need suggestions


What is your favorite class A amp and why? There are many here on Audiogon... Levinson, Krell, Pass Labs, Plinius and an occaisional Accuphase A50V. I am driving Proac Response 3.8s (88dB efficiency). I recently auditioned a Pass Aleph 5 and was stunned by the presentation at only 60wpc.

Your input is much appreciated!
blueswan
I love Levinson stuff, but recently demoed and bought harmonic precision amps from star sound tech. These are 110 wpc into 8 ohms and over 97% efficient. Almost no heat. Unbelievable sound and incredibly dynamic. I am driving revel studios with these which I previously drove with 250 wpc levinson amps. I thought they couldn't be as robust as the MLs and when I first got got them thought they were muddy slugs. However after about 300 hour burn in it was a revelation. These things have opened up so much it is hard to describe. They get better on each listen,truly warm and dynamic. I really thought I was listening to tube amps. Someone who is respected in the business ought to evaluate these amps. I have heard and used a lot but these are remarkable.
The Plinius SA-102, 125 watts pure class A. Read my review and you will look no further.
Thanks to all of you for your help! It is with your help that I found and purchased a Pass Labs Aleph P Class A preamp with adjustable gain right here on Audiogon, and I am sure I can do the same in my search for a class A amplifier. I will make it a point to check out all thses suggestions.