Most musical integrated amp you have heard?

Redgum RGI-120enr
Rate at 155wpc they are very powerful with lovely midrange and bass response . The units come with a factory test spec sheet and my unit indeed came with test specs of 215wpc into 8ohm . Very reliable and great customer service and backup.

Accuphase Integrated amps. I think the LFD Zero III is going up the list as well the more i listen to them at the dealer's place.

I'll second the Leben CS300XS. A good combination of the realness of tubes and the toe-tapping PRaT of Naim or Exposure.

I use the Viva solista and have to say it is the best amp I have had. Fast , transparent and neutral with real drive. Having said that, I am about to get rid of it, my wife hates it, to big, to black, runs to hot.
I had a Karan K180, which was'nt nearly as good, neutral, but lacked drive and dynamics.
I heard the LSA room at RMAF and was very impressed indeed, with the standard amp, the Signature and statement must be very good indeed.

What I currently own - a McIntosh MA6600. "Musical" just happens to be the word I most often use to describe the sound.