16-channel true diversity UHF wireless system. Samson's Concert 88 Earset Wireless System offers a high-performance UHF wireless solution where the freedom of mobility is a must. It's perfect for business professionals, educators, house of worship speakers, fitness instructors and others looking for stunning sound and versatility without cables. The frequency-agile Concert 88 Earset allows for up to 16 systems to operate simultaneously (region dependent) with up to 300' separating the receiver and transmitter. At the core of the system is the CR88 Wireless Receiver. Featuring a true diversity design, the CR88 minimizes signal dropouts during performance. If a dropout does occur, the CR88's tone key and auto mute functions eliminate any background noise until the signal is restored. The CR88 receiver's front panel provides a Select button for auto syncing receiver and transmitter channels via an infrared signal. The panel also features a 7-segment Channel LED, Volume knob, Power button, two tuned antennas, as well as Audio and Ready indicators, for optimal functionality and monitoring. Balanced XLR and 1/4'' outputs can be found on the receiver’s back panel. The Concert 88 Earset features the CB88 Beltpack Transmitter and SE10 Headworn Microphone with a locking connector. The transmitter, which can operate for up to eight hours on two AA batteries, is engineered to the finest detail to provide the ultimate in sound reproduction. Specifications: Frequency: 606-630 MHz; System: Working Range: 300' (100m) line of sight; Audio Frequency Response: 50 Hz - 15 kHz; T.H.D. (Overall): <1% (@AF 1 kHz, RF 46 dBu); Dynamic Range: >100 dB A-weighted; Signal to Noise: >90 dB; Operating Temperature: –10°C (14°F) to +60°C (+140°F); Tone Key Frequency: 32.768 kHz; CB88 Belt pack Transmitter: Input Connector: Mini-XLR (P3); Input Impedance: 1MΩ; Input Gain Range: 38 dB; RF Power: 10 mW EIRP; Power Requirements: Two AA (LR6) alkaline batteries; Battery Life: 8 hours; Dimensions (HxLxD): 3.75'' x 2.44'' x 0.75'', 96mm x 62mm x 18.5mm; Weight: 0.2 lb / 93 g; CH88 Handheld Transmitter: Microphone Element: Q6 Dynamic; Input Gain Range: 28 dB; RF Power: 10 mW EIRP; Power Requirements: Two AA (LR6) alkaline batteries; Battery Life: 8 hours; Dimensions (HxØ): 10.23'' x 2.1'', 260mm x 54mm; Weight: 0.48 lb / 218 g; CR88 Receiver: Audio Output Level - Unbalanced +14 dBu; Audio Output Level - Balanced +9 dBu; Audio Output Impedance - Unbalanced 810 Ohms; Audio Output Impedance - Balanced 240 Ohms; Sensitivity -100 dBm / 30 dB sinad; Image Rejection: >50 dB; Operating Voltage: 15 VDC 200mA; Dimensions (LxWxH): 8.25'' x 4.9'' x 1.75'', 210mm x 125mm x 44mm; Weight: 0.85 lb / 388 g