Im curious to know, if I wanted to send the preamp of my fisher 500c (or other classic tube preamp) out to a modern Bluetooth system, what sort of buffer might be needed?
Although the preferences is the classic setup running from pre to power in the amp, there are times that it would be convenient to send the signal to satellite speakers. On the amp is a “record-out” set of jacks, but they do not appear to be buffered, and I am guessing there will be an impedance mismatch into a Sonos or other modern satellite system. Does anyone know if there is an easy off-the-shelf buffer to do this, or would it be best to build a cathode follower with a 12 ax7? My frame of reference is building tube guitar amps, so my guess is that the Soldano Effects loop would work. That being said, I am hoping there is an easier drop-in.