The Electro Harmonix Superego is a polyphonic synth engine capable of transforming your tone into lush glissandos and cloudy dreamscapes. Or Nightmarescapes. Up to you.
Use the simple controls and 'auto' mode to get awesome sounds straight out of the box and without needing to tap dance on extra footswitches as with some other sustainer pedals. Check ou tthe video to really get a grip of what the Superego sounds like
Here's what Electro Harmonix say about the Superego
The polyphonic SUPEREGO Synth Engine reinvents sample and hold, performs fluid glissandos and creates oscillator like, synthesizer effects. It can stack sounds or create infinite sustain, it even lets you tweak attack and decay, or use its effects loop to invent novel synth patches. Indulge your guilty pleasures!