The CM311 reference head-worn condenser microphone is designed for touring and live-sound applications. It sounds like the best handheld microphones full, clear and distortion-free, even with the loudest singers.

Differoid stands for differential cardioid, which cancels ambient noise from floor monitors, crowds and other sources. Controlled field tests show that the Differoid provides up to 12dB more gain before feedback than conventional cardioid microphones. Many users of CM311 say that their house mix is better because the mics isolation is nearly complete.

The CM311 is available in different versions, e.g. the CM311 L with a three-pin mini XLR connecter, which fits all AKG wireless body-pack transmitters.

• Differoid noise-cancelling technology for highest ambient noise rejection
• Cardioid polar pattern for outstanding gain before feedback
• Condenser capsule with internal shock mount for efficient rejection of mechanical and body noise
• Robust headband construction for maximum comfort and freedom of movement
• Available with professional Mini-XLR, XLR and W/TA4F connector for all wireless pocket transmitters

AKG CMM311 A (AESH, L) - Cut Sheet 

AKG CM311 - User Manual

AKG CM311 - Cut Sheet

AKG CM311 Service Documentation