I am now playing Tyros and Kn2600 midied together with the Tyros as master. I was using KN7000 and have been able to transfer all my registrations from the 7000 to the 2600. They sound almost identical when played through my Torque system. I had built an extensive bank of theatre organ sounds which I use a lot, on the 7000 and am now combining these with the Tyros theatre organs to striking effect.
By setting the split point on the 2600 at C1 and playing left hand on the Tyros the whole 61 notes of the 2600 are available for right-hand work giving much greater depth.
I now have an extremely versatile set-up which has given my poor old back a new lease of life. Instead of having to rest for an hour after setting up at a gig I can get straight on with it (music, I mean) with renewed vigour. Don't anyone belittle the KN 2600. It is a remarkable instrument for the money IMHO.

Trevor.