i cant say much regards to the 602's as i have CDM NT's but my B&W are dammed hard to drive and are fairly flat tonally with amazing definition in both the mid and high frequencies.
your NAD amp i noticed is 50wpc. My B&W liked to get going with outputs over a genuine 80wpc i have found and really start to feel solid with 120WPC + !
if you run any demanding speaker with less power it doesn't get muffled it actually gets brighter and thinner
Hmmm not sure about that.... Anyway the NAD is published at 50WPC but NAD are very conservative and it is probably as powerfull as some other brands which publish 80WPC... They can put out up to 200w dynamic power for short bursts....
I don't see why having a huge wattage amp would make any difference to the treble when they have 90db sensitivity so they only need 1watt to play at that volume... Maybe it would effect the bass/midrange a bit a high volumes....
Anyway I am happy with the amplifier (never goes past about 35% on the volume knob, too loud) but I am definately looking to change the DAC and the speakers... I think I will move away from B&W because they are a bit bright although I do like them overall I would like a more refined treble because the sibilance spoils an otherwise good speaker quite a bit imo...
For a DAC I am not sure what to get either... Any suggestions? Again I want SMOOTH TREBLE.. that is my main priority, high quality treble with no sibilance... Sibilance really annoys me! I was thinking maybe :
DAC -
Schiit Bifrost DAC
Arcam rdac (good but bass is not very good)
Speakers -
PMC - maybe the PMC DB1S as they are only ones I could afford + a subwoofer?
Dynaudio - Audience 52se maybe
quad - 12l2
ANY OTHER IDEAS FOR SPEAKERS / DACS?