The RUF-2 HH consists of a 2 channel UHF receiver and two hand-held transmitter microphones, in case one mic is needed for main vocals and the other is needed for the background vocals. Features Wireless microphone set consists of: 1x stationary 2 channel rack receiver with mains adapter 2x Reloop hand-held transmitter microphones with wireless receiver 2 channel UHF microphone with condenser capsule Squelch: pilottone and noise lock Quartz-controlled oscillation 2 independent volume controls Symmetrical as well as asymmetrical outputs Specs UHF transfering frequency: 863 - 865 MHz Stability: +/-0,005% S/N ratio: > 95 dB Distortion: < 1.5% Frequency range: 60 Hz - 18 kHz Sensitivity (receiver): 6 dB Weight (receiver): 0.388 kg.