I am about to experiment with y pieces to run parallel xlrs to then get back to one at amp
Careful! You don't want any common grounds if you are running balanced circuits..
RCA Y- cable or is an A/B switch required?
I would like to connect my CD player to two different preamplifiers (one stereo connection for my surround sound receiver and one stereo connection for my vintage McIntosh gear). In the old days, we simply used an RCA Y-cable for each channel, but I am curious if the sound quality or a possible line level instability might arise.