crisotop
Well-known member
A friend of mine has this small tube preamp with the following problem:
as soon as you plug the unit in and wait a couple of seconds (drive + output are set to 12 o'clock) the vu meter gets on full deflection and the only output signal is low-frequency hum, no Mic-Signal whatsoever.
Checked the walwart which seems fine, also replaced the tube, no change. as soon as I pull the tube out, the meter stays at zero.
any help or hints much appreciated
christoph
as soon as you plug the unit in and wait a couple of seconds (drive + output are set to 12 o'clock) the vu meter gets on full deflection and the only output signal is low-frequency hum, no Mic-Signal whatsoever.
Checked the walwart which seems fine, also replaced the tube, no change. as soon as I pull the tube out, the meter stays at zero.
any help or hints much appreciated
christoph