The KR-770 and KR-570 share the same operating system, tone list and arranger
styles. The main operational differences between the two units are:

Feature KR-770 KR-570

Pitch-bend wheel yes no
Expression pedal input yes no
Total speakers 6 4
Output power in watts 60 x 2 40 x 2
Tone groups 8 8
Variations 136 124