Luckily, in case the word 'metal' bothers you, the arion brand faceplates are easily discarded and lost forver.
The knobs are volume, high EQ, low EQ, and distortion. It has a really big range of distortion ammount, it can do the expected square wave but also a shitty old radio sound when you put distortion on zero. all the knobs have some slight changes on the mid range. The stereo output feature is really nice for a mix board. Also this allows for an easy feedback loop for extra oscilator sounds.
Mine has a strange problem, a big design flaw or maybe someone stepped on it too hard, but sometimes the pedal will not pass any signal. Sometimes it will be half distorted or half the volume. If I press down on the knobs it will work correctly. It kind of adds a new control for feedback and stuff but overall really annoying for processing instruments.
