Diki, Yes I would use the A-33 for key on/off..and all the control would come from the BK-7m..

As an audio playback this unit will be great to use with the G70 also..small enough to sit on the left side of the G70...flat and pretty much out of sight..unlike the laptop..

Yes it could also be a great addition to the Mediastation too, but I am convinced that the MS Qranger can stand on it's own..

I would love to see Roland release a version 3 (soft update)for the Prelude with the mod changes found on the BK-7m..Then all I would be missing are the extra keys..