Originally Posted by harryconway
Probably a Roland SPD-S (or similar) unit is what you might want to look at.
That looks like it could work. Seeing how I already have two Alesis pads, the only way I see myself getting a Roland SPD-S is if it contained a superior library to everything else in it's price range. Would it have a larger library of sounds than a Yamaha DTX-502? I have my eye on that particular module at the moment.