Your amp MBengs is a new design designed to run on todays voltages the power companies supply today. I think its ridiculous myself but I understand artists desires to be different then the rest of the pack. They even make some wall warts that mimic the condition. Its like some musicians who like the sound of their pedals running with half dead batteries. How well a newer amp will work run at lower voltages is questionable. Usually with vintage amps designed to run on 100~110Vac and can sound over gained running on 125Vac. There have been some musicians who have used them on vintage tube amps at a lower voltage condition in order to get a brown sound. Its like starting with a dead battery, you have to allow it time to fully charge up. Could have been avoided by bringing the voltage up slowly and allowing the dielectric barriers in the caps to form.
#Variac for guitar amp full
I've blown power transformers before by applying full power after changing caps. After doing a repair, you'd bring the voltage up slowly to avoid blowing components you just put in, especially with new power caps that need time charge up slowly. I used a Variac for repairing amps for decades. Some of the newer ones even have an LED readout that tells you what the voltage is set for or you use a VOM to monitor its voltage Its essentially a large transformer and rheostat which adjusts the AC output. If you want to control your amps volume use a power break or power soak attenuator, not a variac.Ī Variac is a tool used by electronic technicians to control AC voltage/current levels.
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