R ROLAND

[ ECHO CHAMBERS, PHASE SHIFTERS, ] GUITAR AMPLIFIERS, [ ANALOG ECHOS, ELECTRONIC RHYTHM GENERATORS FOR USE WITH ELECTRONIC KEYBOARD INSTRUMENTS, ELECTRONIC MICROCOMPOSERS, ] BASS AMPLIFIERS [ AND ELECTRONIC CHORUS EFFECT PRODUCERS ]

ELECTRONIC MUSIC PRODUCING DEVICES-NAMELY, ELECTRONIC SYNTHESIZERS, ELECTRONIC PIANOS AND ORGANS, AND ELECTRONIC STRINGED INSTRUMENT SIMULATORS