B-7 Pro In-ear Monitoring SystemB-7 Pro is a professional wireless in-ear monitoring system operating in the 2.4GHz band. A fully digital signal path delivers high quality stereo audio with minimal latency and a range of up to 50m. The receiver (RX) can be clip-mounted to clothing or a guitar strap and can be re-charged from the main transmitter (TX) or via USB-C. The TX is itself rechargeable or can operate directly from the supplied 9Vdc power adaptor and can even double as a USB audio interface for recording to a PC or Mac computer. Onboard the TX is a full colour display showing signal and battery status for both TX and RX units and serves a settings menu for adjusting signal levels, display and transmission preferences. In addition to balanced left & right signal inputs, there is a stereo Aux input and a wired Phones output. A screw adaptor is also provided to enable the transmitter to connect with standard action camera clamps if preferred for mounting to a stand or fixture. In summary, the B-7 Pro offers the latest wireless technology with unique features to deliver reliable high-quality monitoring for even the most demanding of performers.DetailsUp to 6 hours operation per chargeInternal rechargeable batteries (TX and RX)3 settings for latency vs stabilityAutomatic pairing procedureSpecificationsPower supply 9Vdc 1200mA (adaptor supplied)Batteries Li-polymer 3.7V 3000mAh (TX), 400mAh (Rx)Connections: Transmitter L+R XLR/jack, Aux 3.5mm, Phones 3.5mm, USB-C (data), DC jackConnections: beltpack receiver Headphones out 3.5mm (13ohm min.), USB-C (charge)Carrier frequencies 2400-2483.5MHz (frequency hopping)RF output power 10mW E.I.R.P max.Sampling format 24-bit, 48kHzFrequency response 20Hz - 20kHzLatency 7.33 - 10.85 - 14.33ms (fast-default-safe modes)Input impedance 20k Ohm balanced, 10k Ohm unbalancedAuxiliary input 2.1Vrms (8.7dBu) max.Input level 9.8Vrms (22dBu) max.Headphone : impedance 13 Ohms min.Headphone output 57mW max. per channel (THD >1%, 16 Ohm, 1kHz)Channel separation -105dBTHD