A bit confused...
I made "shorting" plugs years ago for unused RCA inputs on a couple of phono preamplifiers.
I wired a small resistor from the RCA's center post to the RCA's outer band (as I was instructed to do).
Forget the value, but it was small.
There was a marked sonic improvement, though the (2) preamps were inexpensive battery powered stereo units that I ran as dual mono's for stereo (simple way of beefing up the power/battery supply).
DeKay
I made "shorting" plugs years ago for unused RCA inputs on a couple of phono preamplifiers.
I wired a small resistor from the RCA's center post to the RCA's outer band (as I was instructed to do).
Forget the value, but it was small.
There was a marked sonic improvement, though the (2) preamps were inexpensive battery powered stereo units that I ran as dual mono's for stereo (simple way of beefing up the power/battery supply).
DeKay