Hum in preamp when using HT bypass


I have a Sim Audio P5 preamp that has an HT bypass input. AT first I was using RCA interconnects from CD to preamp, preamp to amp and the HT bypass and had no problems. When I switched to balanced from CD to preamp and preamp to amp leaving the RCA connection for the HT bypass I am getting the hum. There is no balanced input for the HT bypass. When I choose my CD input I do not get the hum, only when I switch to the HT bypass input. Any suggestions?
kayoboy

Showing 1 response by kwtoxman

Sounds like an issue with the bypass circuit. Try another source through the ht bypass that doesn't hum normally, and if the hum is still there, it sounds like the circuit. Good luck.

Sim Audio tend to have great customer service.

kw.....