I bought a Rotel RMB 1066 (60w x 6) for my dad's pipe-in music ...
suffice to say, this amp can do 150w x 3 (bridged)
2.0 listening: no level matching: no blind test
I did some listening with my Yamaha rx-v640 (85w x 2 RMS) some pop, r&b songs ... took note of what I heard and felt.
I removed the speakers from the yammy and transferred them to the Rotel ...
played the same songs again.
right from the get go, the music was now louder ... (this is no surprise, because the Rotel is double the wattage)
I brought the volume down again, but this time my speakers can now do the low end louder and better ...
I have always complained that my floorstanding speakers couldn't do what my older kenwood speakers did (10" woofer) ... which was to boom the bass.
$h1t now I can!
call it what you want, but if you guys want plug and play instant improvement of music listening, go buy yourself a stronger amp. (no level matching and stuff) Im talking about out of the box performance.