most clear, crisp sound power amps, monoblocks ?

It depends how much money you can spend. But money does not garantee you a good live sound. In almost 16 years of time I also encouterd many highend sets with a poor endresult.

The combination of the right tools togheter ( sources, speakers, amp, pre amp, cables, conditioner etc) can create a live and realistic sound.

Acoustics of a room are the biggest enemy of a set.

When you have a system with a bigger freq. response, you can create a more live like sound. It is all about making the perfect combination of tools. I call it the art of sound.

I wrote a personal view in how I see a blueprint of the absolute sound. I call it Total sound.

http://forum.audiogon.com/cgi-bin/fr.pl?rcabl&1393266431

In my personal opinion Pass Labs also make the most complete sounding poweramps.

sony walkman cassete players with avls playing recorded metal tapes or chrome type II tapes :D it is no joke:)p

The range of answers here is awe-inspiring. Condescension to curmudgeon; elitist to judgmental. And even a few well-meaning answers thrown in. Bojack had it right - lighten up, audiogoners. This is a hobby forum, not a philosophical statement of identity.

Seriously, if the OP were my first post, these answers would only serve to edify the misconception of hi-end audio as the domain of the self-absorbed and out-of-touch.

Having said that, I do agree that the question is much too vague to give any legitimate empirical answer. But Mitch4t and a few others already suggested a good way of saying it without reverting to trolldom.

When I come across a vague question and I think I can help, I do. If not, I move usually just move on.

The "live sound" reference idea is lame, meaningless, and should be abandoned. Maybe replace it with "well recorded" or "sounds good to me."