Im using C600 with Win 7 64bit ...
How's it working with the Kemper? Have you tried the s/pdif yet? Also curious to whether you managed to get those transport buttons mapped to any other DAW instead of ProTools...
Its working perfectly with Kemper ! And it sounds awesome... I do not have any S/pdif cable, I merely hook up my kemper into the real 1& 2 input of my C600 and output to a pair of monitors.. Im currently using protools, but i hv not tried mapping the transport button. I find it more convenient to operate via keyboard and mouse instead.