@ricevs Yes, Ralph is correct and the others are wrong. Ralph solved the unsolvable with his original OTL design. He worked on his design for years until he solved the technical challenges. Who are you to question his credibility? Who are you to post a meaningless piece of excrement $300 dac as your proof of concept that op amps must be rolled? And to do it in a thread that the OP created to discuss Atmasphere class d?
You know, there was a time not long ago when people like you and the other obnoxious poster would just go elsewhere rather than to purposefully disreepect someone like Ralph. He has been here since the beginning of Audiogon, answering questions, never hawking his own gear, just providing honest and forthright answers to those trying to understand something. And then an amateur tweaker like you comes along and disparages Ralph? The other guy too? You are both pimping your own agendas but why did you pick this thread and Ralph?
You two should be ashamend of yourselves…you have no credibility and just because you’ve soldered a few times and liked the results does not make you qualified to disparage Ralph or his design. If you have a shred of integrity, you would have least listened to the class d Atmasphere amp before beginning your false sermon.