Roland Pad-8
The first model, introduced in 1985, was the Pad-8. It was a very important device at that time, allowing drummers and percussionists the opportunity to trigger virtually any MIDI sound source without the need of a full electronic drum set. It had no internal sound source, and all pads were assignable to one note each. All pads were on the same MIDI channel.
Read more about this topic: Roland Octapad