2008 Summer NAMM Show: Roland announced the TDW-20 Expansion Board for the V-Drums TD-20 Percussion Sound Module.
Description:
This add-on lets drummers extend the power of their V-Drums with wider dynamics, new sounds, new ambience effects, enhanced V-Editing, and improved functionality.
The TDW-20 Expansion Board can be user-installed easily, adding hundreds of new drum and percussion instruments. The [...]

Ready for some 80’s-tastic synth drum action?
The YAMAHA ED10 Electronic Drum is a electronic drum pad with a built-in analog synthesizer engine.
Features:

1OSC + 1Noise + 1 ‘Subsonic’ OSC + 1Filter + 1ENV synthesizer.
Analog synth engine
All the parameters are edited with knobs - pitch, sub-sonic pitch, filter, noise, decay, bend, click, filter-env-mod, volume.
The envelope is velocity [...]