I purchased this item new and have only used it at home. I have initialized the pattern data to factory settings. This listing includes the main unit only. I have confirmed the headphone output for this listing. Since I only used it with batteries, I have not tested the adapter. Please note that batteries are not included. Digital sampler, step programmable parameters, USB connection available. - Brand: KORG - Model Name: volca sample - Function: Digital Sampler - Connectivity: USB, MIDI IN, SYNC OUT - Parameters: Step Programmable - Controls: Analog Equalizer, Reverb, Tempo Adjustment - Display: LED Display Thank you for looking.