NUX B-7 Pro In Ear Monitor System

The B-7 Pro Stereo Wireless In-Ear Monitor System is a professional-grade wireless solution from NUX’s Pro Series, designed for connecting to the Aux output or main output of a mixer or audio interface, or to the headphone output of a multi-channel digital personal mixer used in live performances. It enables stereo wireless monitoring, making it ideal for bands or solo performers during rehearsals, live shows, and live streaming for monitoring purposes.

NUX’s Pro Series combines anti-interference tech, intelligent frequency hopping, 1MHz narrowband transmission, Audio Zip/Unzip, three stability levels, and a true-diversity dual-antenna design for rock-solid, reliable signal. The system automatically selects the cleanest channel, effectively avoiding interference to ensure stable and clear signals—perfect for environments with a high density of wireless devices. The intelligent frequency-hopping technology is especially well-suited for 1-to-1 personal monitoring applications.

As an upgraded version of the entry-level B-7 PSM, the B-7 Pro offers significant performance improvements. It supports stereo or mono audio transmission, with stereo data processing being twice that of mono. It delivers 24-bit / 48 kHz high-resolution audio, a frequency response range of 20–20 kHz, and ultra-low latency as low as 7.33 ms, providing a clearer and more natural monitoring experience.

Specifications

– Operating Frequency Band: 2400–2483.5 MHz

– Transmit Mode: Frequency Hopping

– RF Output Power: 10 mW E.I.R.P. (max)

– Audio Quality: 24-bit / 48 kHz

– Frequency Response: 20 Hz – 20 kHz

– Latency: 7.33 ms (Low Latency Setting) / 10.85 ms (Default) / 14.33 ms (Safe Setting)

– Unbalanced Input Impedance: 10 kΩ

– Balanced Input Impedance: 20 kΩ

– AUX Input Level: 2.1 Vrms (8.7 dBu max)

– Balanced Input Level: 9.8 Vrms (22 dBu max)

– Headphone Output Impedance: ≥13 Ω

– Headphone Maximum Output Power (per channel): 57 mW (THD < 0.1%, Rload = 16 Ω, 1 kHz)

– Channel Separation: -105 dB

– THD+N: <0.01% (typical)

– Dynamic Range: 110 dB (A-weighted)

– Output Level Adjustment Range: Mute –86 dB ~ +12 dB

– Auto-Off: Automatically turns off after 10 minutes of no connection or lost connection

– Built-in Battery Capacity: Rechargeable Li-polymer

– Transmitter: 3.7 V / 3000 mAh

– Receiver: 3.7 V / 400 mAh

– Battery Lifetime: TX: Up to 6 hours｜RX: Up to 6 hours

– Power Requirements: DC 9 V, 1 A (min), negative tip (Transmitter)

– Operation Range: Up to 50 m (165 feet max)

– TX Dimensions: 140 (L) × 97 (W) × 53 (H) mm

– TX Weight: 525 g

– RX Dimensions: 47 (L) × 71 (W) × 22 (H) mm

– RX Weight: 51 g