Can be used with guitar, bass, and keyboard. Features 120 different tones, including overdrive, compressor, delay, and limiter. Each tone can be edited. Also includes vocoder and keyboard effects. SE-50 Stereo Effects Processor. - Model: SE-50 - Type: Stereo Effects Processor - Functions: Overdrive, Compressor, Reverb, Chorus, Delay, Vocoder, Keyboard Effects - Connectors: MIDI IN/OUT, AC Adapter Port - Power: AC 12V 1A - Display: LCD Display Thank you for viewing.