PC–USB–E30–RCA–L30–RCA-- Adam T10S–RCA–T5V’s
Headphones are great but powered monitors have nasty ground loop.
PC / monitors / usb hub all share a UPS with Amp/Dac/sub/monitors. its a dedicated circuit i pulled originally just for my PC (its a big boi)
I know a high end workstation isnt an ideal audio source… I did try an IFI usb ground loop eliminator which did remove nearly all the noise but a high pitch noise remains.
volume has no effect on noise @PC or Pre-amp but gain knob at monitor does. so monitor is seeing noise as signal.
I have tried optical which does totally solve this noise but i already use the optical IN for my TV and the only decent switch could find supporting 192khz (monoprice) seems to have already failed and i liked being able to play some of my DSD via foobar without converting to PCM.
Moving forward upgrading to a fully balanced DAC with Pre-Amp functionality would allow me to leave my L30 alone for headphone use and use the XLR’s for my monitors.
Having trouble finding options under say 500 that have a volume knob… otherwise i’d probaly just get a Bifrost2
any advice is welcome! thanks for reading!