Synchrony 1b --Nad375bee user here for three weeks now. At first, I regret going to the "safe" route by pairing the synch1b with the NAD375. There is nothing to complain sa Synch1b, they're exceptionally good speakers, kaya lang I was looking for more sa Nad375. But after 30 hrs of playing(thats one week for me), lumabas yong sound na gusto ko. Very detailed, reproduction is very accurate, separation is quite remarkable. And the power! grabe, kahit sobrang lakas ,cohererent pa rin without losing significant detail. Im now a beliver sa PSB-NAD.