Just received a new DT25 112 Combo amp and having issues.
There's a very high/noticeable amount of electrical noise using this amp in ANY setting (any dial...i.e. drive, presence, volume, master, class A/AB, pentode/Triode, etc). The electrical noise only quiets down when you reduce the volume to too low a volume.
Already at 10 o'clock dial setting the noise is marked....and every setting in the recommended Voice plastic cutout sheet that came with the amp is noisey as hell. Overdrive is a joke in noisiness. Cleans should be silent and aren't.
Power cord is in a balanced electrical outlet and cables are shielded.
I've had tube amps before in same wall socket/cables and none were as electrically noisey as this unit. It's deal breaking annoying.
1.) Bad tubes
2.) Broken unit (i.e. needs servicing)