The output of your phono preamp is at line level, so you can split the signal after the phono preamp as you have asked. A switch will be preferable. If you do not use a switch, the phono preamp will see the impedances of both preamps, this can end up being a complex interaction with the output impedance of the phono preamp not being low enough to drive the impedance presented by the combined input impedances of the two preamps. I think that Radio Shack has a basic switch that should be of help. You will still have the long cables loading down the phono preamp, but you would have had that either way.
Splitting turntable signal
Hi, here's what I am trying to achieve, please let me know if this is feasible at all.
I have a Rotel RP900 and Rega arm turntable, which goes into a Parasound P-100 amplifier. After this amplifier I would like to split the signal so that it goes to two different amplifiers in separate rooms:
(1) can this be done and what kind of splitter would I need? Assuming that I would not need both systems to be on at the same time, should I look into a switch rather than a splitter?
(2) what are the maximum recommended lengths after the amplifier (assuming this split which should be roughly...-3 dB?) that I could run?
Thanks a lot for all the help!
I have a Rotel RP900 and Rega arm turntable, which goes into a Parasound P-100 amplifier. After this amplifier I would like to split the signal so that it goes to two different amplifiers in separate rooms:
(1) can this be done and what kind of splitter would I need? Assuming that I would not need both systems to be on at the same time, should I look into a switch rather than a splitter?
(2) what are the maximum recommended lengths after the amplifier (assuming this split which should be roughly...-3 dB?) that I could run?
Thanks a lot for all the help!

