VH4 issue (serial FX loop?) User Issue solved

jeff_g

New member
Hello! I'm having a problem with my VH4 head. With the serial FX loop hooked up, I can hear the effects and the channels change but none of the preamp knobs have any effect. Post knobs (master, presence, deep) all work. When I disconnect the loop everything works perfectly. I'd really appreciate any and all advice. Thank you!
 
Turns out it wasnt the amp at all...the (stereo) fx unit in the loop was set to "left only"...I'm still sort of puzzled as to why it would make the amp behave in this way, but it's working now and that's all that really matters, I guess :)
 
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