If one of them starts humming I'll address it, but otherwise I'm not gonna worry about babying stuff too much. GenRad Variac W10MT3A, cased, 10 amps, 120 volts, with volt and amp meters. 1156D-3Y Unit is 24.2 KVA set up for 0 to 240 VAC 3 Phase In x 0 to 280 VAC. I've got amps sitting here that I know I haven't played in the last 5 years or more, but if I decide to play one I'm just gonna plug it in & turn it on, no limiter or variac. Power Stat Variac Variable Output Transformer Model No. Otherwise, go ahead and try the amp but just be prepared to kill the power if it seems like it's not behaving properly. If the item is very decrepit and has obviously sat for decades, get a tech to check it out before you try to use it. Could something like this be used as a cheap variac. By the time you can hear a change in the tone or distortion, you are. Most of the time, nothing obviously-bad happens when you just use an old amp.įor these reasons, it's just not worth worrying about the need for re-forming if you're not a tech. A variac pulls down/up all the voltages in the tube amp, including heater.A player plugging in an amp for the first time has no idea when it was last used.A non-tech guitarist probably doesn't have a lightbulb limiter or a variac.My personal preference is for a lightbulb limiter, because I think it gets at the same reduced-current that is the indirect effect of a variac. If you want to control your amps volume use a power break or power soak attenuator, not a variac.
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