Monotone With the music I listen to most of the time the DAC64 gives me more than the NOS, no question. More detail, more punch, more life, with none of the relentless, harsh drawbacks that others mention. I've probably just been lucky. To my ears it fits the rest of our system really well. That said, if I had the choice of buying a huge number of CDs or buying a DAC64 [even second-hand] I could certainly live with the NOS. DAC64 is worth a listen IMO. Either way my 20 year old Xerxes turntable dumps on CD from a great height... Paul