This is a used pedal in excellent condition.

Now any electric guitar player can have access to nine magically quirky, dark and unique Mellotron® sounds. No more extra devices such as special and cumbersome 13-pin MIDI pickups! In addition to electric guitar, you can trigger the MEL9 with any instrument that produces an electrical output, such as a keyboard or a bass, down to 55 Hz or A1.

The polyphonic EHX MEL9 has superior tracking; you can create single notes or chords with ease. The MEL9 will follow guitar bends, dive bombs, slurs, and any other guitar expression/performance techniques you can throw at it!

Pays homage to nine of the coolest Mellotron® sounds: Orchestra, Cello, Strings, Flute, Clarinet, Saxophone, Brass, Low Choir and High Choir
Works on guitar without modifications, special pickups or MIDI implementation and tracks bends, slides, even whammy dive bombs!
Also works with bass guitar down to the open A string as well as keyboards within the limits of its polyphony (5 notes) and range (A1 to A5)
Includes independent Effect and Dry volume controls so you can create the perfect mix at the Effects output
Dry Output jack outputs your input signal at unity gain
Attack control sets the volume swell speed. As it’s turned clockwise the notes fade in more gradually
Sustain control adjusts the release time after a sound is stopped. As it’s turned clockwise, the fade out time increase