The Varidrive by SIB! is a gnarly fully AC powered vacuum tube overdrive. It’s got a real analog growl, pushing that tube to the limits for real distortion.
For such a nicely engineered pedal, they forgot one thing: there’s zero indication when you’ve engaged the effect… I mean, other than screaming overdrive in your ears. But visually, ya got nothing, and during a hard core punk rock gig, it can sometimes be hard to tell. Luckily, SIB! already put an LED on their pedal to indicate it’s getting power. It’s not so hard to change that out for a bicolor LED to indicate power AND when the effect is engaged.