Balanced and single-ended (RCA) operations are inherently incompatible.
So if RCAs are used its not balanced, and if the XLR outputs are used
(and the preamp is properly balanced) then the use of the RCA
connections will result in a buzz.
IOW its one or the other and never both, unless additional active circuitry is used.
The gain has nothing to do with it whatsoever. That is saying that to make something sound better, you just make it louder.
@atmasphere
Are you able to expand on this further? I get buzzing if I use 2 sets of RCA cables with my standalone Phono stage. i.e. if I run RCA's from turntable into Phono and then I run RCA's into PreAmp I get buzzing. If I run Phono direct to Power Amps (phono has vol. control), no buzzing. Same if I go direct to Pre-Amp with inbuilt Phono no buzzing, but go standalone Phono into same Pre-Amp I get buzzing, so it appears two sets of RCA's from Phono sets off buzzing.
Thank you.
