Audio-Technica PRO 35 Cardioid Condenser Clip-On Instrument Microphone w/ cH Connector seanshiddentag The RM68 is designed to

The RM68 is designed to mix up to three microphones with three stereo sources

Once you release the switch the effect will be  bypassed

Maximum Clip Length in NTSC/PAL: 3600 frames

AMP TYPE: Solid State

so connecting it to your keyboard is a piece of cake

Audio-Technica PRO 35 Cardioid Condenser Clip-On Instrument Microphone w/ cH Connector seanshiddentag The RM68 is designed toThe Audio Technica PRO 35cH is a cardioid condenser clip on microphone designed for accurate capture of instruments in houses of worship, clubs, and live stage applications. It includes an AT8418 instrument mount for easy and versatile positioning on horns, guitars, stringed instruments, or drums. The cardioid polar pattern effectively minimizes pickup of noise and ambience at the off axis sections of the microphone capsule. The attached 55"