I have a SRD-7 (original version, not the "Pro" model) and I sometimes use it to drive Lambda Pros since the connectors are compatible. It sounds fine to me that way, but am I sacrificing anything other than ultimate output level? Thanks for your thoughts.Yes, with XLR. It works great.
Your volume pot is logarithmic, won’t be surprised if you are outputting way less than 5 watts at 9’oclock setting
The bias voltage goes into the membrane the signal voltage goes into the plates. Higher bias voltage higher sensitivity.