rockhound76s said:For those of you who've tried these settings, are you getting an UNGODLY amount of squealing feedback when the Lead Master is anywhere above 1?
I swapped my preamp tubes, but it is still occurring :?
Platypus said:Make sure your midgain switch is not enabled... this is documented in the owner's manual as causing immense squealing.
fpoon said:You might have problems with your house wiring or your Mark IV is connected too close to electrical appliances such as T.V's etc. if your getting squealing above 1. I too had the same problem especially with high output pickups and because I was sitting 4 ft away. Get a noise gate if you want to stay with the Mid Gain switch. For those settings I would just put 2 on bass and 3 on mids. Haven't tried his settings yet but from the looks of things they seem pretty good.
devilrob1979 said:Get a power coniditioner mang.
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