Mission Engineering SP1-LFThe SP1 LF was developed by Mission Engineering and FAMC Music, to provide the best possible expression pedal for the Liquid Foot MIDI Controllers. Featuring an expression pedal and switch out similar to the SP 1, each pedal uses a custom wired momentary switch, and is factory calibrated and tested for optimal performance with your Liquid Foot controller right out of the box. The switch functions as an Instant Access (IA) button and can do anything a