Philippe:
Sorry it took me so long to reply. Thank you for looking at my McIntosh Nirvana system. I have my MC252 powering the left channel and the MC2255 powering the right. I cannot tell the difference in the output. The thing about the McIntosh amplifiers is that they are all beautifully unique and sound wonderful. This system will also play very loud. I checked it with an SPL Meter with DTS U571 depth charges. 110 dB at clip point.
Your system is awesome. I would love to sit and listen to Moody Blues on it.
Again, thank you for looking and have a great summer!
Jay