Thank you for viewing. This is a LINE 6 POD with a variety of effects and adjustment functions. I have only confirmed its operation with headphones. The power and headphones have poor contact, so please try adjusting with contact restorer, etc. I bought it used, but at the time, both MIDI and speaker out were working without any problems. - Brand: LINE 6 - Model: POD - Color: Red - Function: Effects unit - Controls: Drive, Bass, Mid, Treble, Presence, Channel Volume, Reverb Manufacturer...Line 6