arafiq, thank you! I looked at the QS on-line and it is one impressive looking amp. I need to research where to obtain one where I can "buy and try", just in case it does not work out for me. Is there any low level buzz from the tubes? Also, I noticed it does not have audio pass-through, I kind of need the pass-through because my main amp does not have a pre-amp output or tape loop, so I am using the pass-through of my MF amp to connect to my PC speakers. Based on your feedback, as well as from others, I'll hold on to my HD600's for now.
I really appreciate your help and suggestion!
I really appreciate your help and suggestion!