littleBits - Synth Pro Expansion Pack
Supercharge your Synth Kit with this Pro Pack!
Communicate between computers and analog synthesizers
Directly record your Synth tunes with your computer
Send and receive MIDI messages
Remix music from any audio software (like iTunes, Spotify and GarageBand)
Transform modules like a pressure sensor, dimmer or light sensor into musical instruments
Make your own MIDI controllers
Includes: 2 x CV modules, MIDI module, USB I/O, mounting boards, and needed cables.