Just out of curiosity - does a 2.7 ms delay make it very difficult to keep up with a drummer during a lively song ? I've found the delay with my GK-20 makes it very hard to say, allow me to play bass in real-time with an up-tempo song. Everything I play is behind the beat, and I find it too difficult to compensate for that. Then again, I haven't really put enormous energy into trying to minimize that delay yet.