Hi!
I'm making a simple active 4-channel summer on TL074 opamps. Power rails are +8V/0/-8V. Inputs are 0dbV, all are buffered. I'm interested in choosing the best sounding opamp operation mode for buffers and summing. Does it matter soundwise if I bias summing opamp to +4V and the signals are mixed positive, not crossing 0? I read that biasing opamps is a class A circuit as with transistors and tubes, but a majority of mixer circuits I found, even high quality, does not use biasing. If it really matters when it is not a problem for me to extend power rails to +-12V for example.
Thank you.
I'm making a simple active 4-channel summer on TL074 opamps. Power rails are +8V/0/-8V. Inputs are 0dbV, all are buffered. I'm interested in choosing the best sounding opamp operation mode for buffers and summing. Does it matter soundwise if I bias summing opamp to +4V and the signals are mixed positive, not crossing 0? I read that biasing opamps is a class A circuit as with transistors and tubes, but a majority of mixer circuits I found, even high quality, does not use biasing. If it really matters when it is not a problem for me to extend power rails to +-12V for example.
Thank you.