Hum coming from my Jolida Glass FX tube DAC
I was wondering if anyone is having this problem with their Jolida DAC. Whenever I have it hooked up I get a hum noise that will not go away. I have tried different interconnects I have tried different inputs on my preamp I have tried using a cheater plug like Jolida recommended. I have everything on an isolated 20 Circuit with 10 gauge wire going into a Shunyada outlet. Everything is run through my APC H15 power conditioner also. Could a bad tube cause the hum? Any answers would be greatly appreciated thanks.