Does anyone have a guide to THD / S/N ratio?
In pondering the O2 versus other amps I've owned, I've started to question how much THD is tolerable or what S/N ratio is "ideal". I have a Class D car amp that sounds great, but has audible "hiss" at near-full volume with a silent source. Of course, that could relate to my deck, but lets just say I know that the amp is the main culprit.
My Yamaha Receiver still sounds great after all these years, but at "reference" volume ("O dB" on the dial from -96dB to start), it has audible hiss. Source is ODAC, so I know it is the amp. I am sure paying bigger bucks next time might get me an amp that is black through more of the power range.
Then there is the always black O2.
The "hiss" is never an issue for the first two amps, considering normal playback volumes and listening environments. But the O2 has certainly trained me to desire that added level of blackness, as I swear it adds some benefit to the perceived "transparency" of my speakers. I'd like to upgrade my receiver next year probably and am looking at Sabre DAC models from Pioneer (love the Class D amps would love to try one), and the ever-popular Sony models which are supposedly now awesome again (I owned one once and didn't like the sound much at all).