Post the question over in Audio Asylum. Luke Manley, the owner of VTL answers thread all the time over there. The amps specifications state EL-34 and you are using KT-77's. Is this a resent change?
good luck
good luck
Hum in VTL 125 mono block amps
I have VTL 125 mono block amps they are about 11 years old with fresh tubes as of late they produce a hum or buzz in the speakers that they never had . Nothing in the system has changed , I get the hum- buzz even with the pre amp muted the level of buzz- hum does not change even when I un mute the pre so I think the hum -buzz is from the power amps. All eq is on a dedicated 20 Amp line cables are top of the line Ridge Street Audio power cables and Ridge Street poiema 3 IC'S / speaker cables. Do any of you have a idea what to ck is a cap starting to leak due to age or something else. Marc