Here's what Mission Engineering have to Say:
The rear cut away and extended length curved surface are ergonomically designed for comfortable use in either standing or sitting positions. The EP-25-PRO has dual 25K outputs with polarity selection, compatible with many devices for guitar, keyboards, acoustic instruments both live and in the studio.
The EP-25-PRO features two expression outputs with independent polarity switches for each channel. This allows for compatibility with a wide range of different pedals, rack effects, modelling amplifiers, keyboards and MIDI controllers.
Pedal dimensions are 11″ x 4″ x 3″
Weight is 3.6lb
Potentiometer is dual 25K Ohm Linear