I adore the NI B4 Mk2, I use it on stage all the time, I also MIDI it up to my Yamaha HS8 at home which plays it beautifully, the HS8 has a basic MIDI spec but controls the Leslie on the organ's Mod wheel, the 16 preset pistons control the programable presets on the B4 and the organ's swell pedal controls the volume via MIDI, oh and don't forget the bass pedals too...they also work off the B4...what more could one ask for..a low cost convincing Hammond emulation...fantastic!

Noel Jay