The Alesis SamplePad Pro features 8 pads and a variety of input/output terminals. - Model Name: Alesis SamplePad Pro - Number of Pads: 8 pads - Included Accessories: Carrying case - Input/Output Terminals: MIDI terminals, USB, 1/4-inch output, headphone output - Control Buttons: Volume adjustment buttons, power button Thank you for viewing. I recently purchased this used, but it turns off immediately after being powered on. I'm looking for someone who can repair it to purchase it.