The ddrum DDTi is a great accessory for studios or for drummers that want an easy solution to access their own sampled percussion sounds. It can be used for a variety of situations. The DDTi includes 10 trigger/pad inputs including hi-hat control. It can be used as a module expander via MIDI or you can use to trigger sounds from your laptop via USB using a sound program. The DDTi is compatible with most existing samplers and drum libraries.