BrandXRC
BrandXRC
I have had this B2 along with the C2 preamp for a year or so. Great sounding amp. I got them at a garage sale cheap. The preamp and speaker switches on the amp needed cleaning bad. All was working well, except one or the other channel would drop out at times, and a flick of the preamp 1-2 switch always cleared it up. I got in the habit of flicking the switch a couple of times before turning on the amp, or at least before turning up the volume. I did this the other day and with the amp on and the volume down, and simultaneous with one flick of the switch, a hum appeared. I thought maybe the switch had "died" so I bypassed the switch with preamp 1 and unhooked preamp 2 input, the hum is still there. Both channels even. If you turn up volume past about 8 oclock, the music will overcome the hum. Anyone familiar with this amp, and have any ideas what I screwed up. :sigh: