I feel like I need to take this conversation in a new direction. I have owned a number of power amps over the years, including tube amps from Audio Research a Lamb. I now have Pass XA60.8 power amps combined with an Audio Research Aniversery Edition preamp and I am completely happy. I had the Lamb and Pass amplifiers at the same time and decided to keep the Pass and sell the Lambs. I think Nelson has created wonderful amplification equipment. If you decide on an integrated amp, the Pass INT-60 is also beautiful. I own both.
Recently I upgraded my digital system by adding a Innuos streamer and USB reclocker, and I have been amazed at improvement in the digital playback.
I think the quality of amplification is more important than the quantity. Both Pass amps are class A