I need an Audio Detective

erik_squires

Sounds like RF interference. 

I want to point out though that this isn't much of a problem unless you like to keep your gear warmed up.  Distance, shielded interconnects and shielded power cables are the usual solutions.

Awhile back I read a lot of claims that equipment sounds best when left permanently powered on. 

Could it be the opposite is true and powering off after each listening session and then powering on 30 minutes before the next is the best option?
 

 If I may ask,

Denafrips recommends you leave your DAC on all the time. Why do you turn it off?

I have the ddc Gaia hooked up to the Denafrips and it is always on. The units are behind glass doors(open completely in the back) and I cut it off for heat reasons. I have left on for weeks at a time and cut it off I cannot tell any sonic difference either way. 

Hello jr96aolcom. It is possible your two devices share a code your remote control is sending. Put a piece of opaque tape over one of the two units and see what happens. If not successful, put the tape on the other unit and try again. No improvement? At least it cost nothing to try. Good luck.

 I have worked in Audio stores for almost 50 years and only encountered a similar situation once.  Guy had bought a Fisher HiFi VHS machine and brought it back saying it didn’t work.  We hooked it up and it was fine. 2nd unit, same result.  I went to his apartment in Boston’s South End to see what was going on, and sure enough the thing had no output at all, plugged into the same amp input as his CD player, which played fine.  Cables were checked.  Finally occurred to me we were located a block from the Prudential Tower, where a lot of broadcast antennae are located.  I switched him up to an NEC deck, and all was well!  RFI was the culprit, and the NEC had effective shielding, where the Fisher didn’t.  This was after Fisher was bought by Sanyo,