In-ear Monitoring System. 64 channels in 4 groups, 961 frequencies. UHF PLL in-ear monitoring receiver, as an addition to the in-ear monitoring system SIEM-111/5. Excellent audio characteristics. Pilot tone technology. Peak limiter, can be activated as required. Individual monitor mix in stereo mode or mono/mix mode. Ear-selective level matching possible via balance adjustment. Operating controls with lock function. Clearly arranged multifunctional display.