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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.
True Wireless Freedom w/ Extended Range
Enjoy up to ~165 ft / 50 m of line-of-sight range so you can move much freely on stage or in your venue.
Crystal-Clear Audio
Delivers 24-bit / 48 kHz high-resolution audio, a 20-20 kHz frequency response range, and an ultra-low 7.33 ms latency.
Rock Solid Connection
Delivers a strong, dropout-free connection with smart frequency hopping, dual antennas, and three reliability modes.
Robust I/O Section
Includes dual combo-jack XLR inputs, a 1/8-in aux in, USB, and a headphone jack.
USB Audio Interface
Connect to your phone or computer and record what you hear from the monitor.
Reliable Run Time
Get ~6 hours of continuous use per charge on both transmitter and receiver.
Cut the Cord, Be in Command
Fits effortlessly into any studio, stage or touring setup, offering pro performance in a portable package.
Compact & Stage-Ready
Lightweight receiver, durable design, built for real world use.
Stable & Interference-Free
Next-gen wireless tech ensuring a stable connection even in crowded spaces.
Record While You Monitor
Capture all in-ear audio, transfer to computer or mobile device via USB.
How NUX Intelligent Frequency-Hopping Works
Like a jazz musician who always finds the right note — when interference pops up, it instantly “changes key,” to not miss a beat...
While in use, the B-7 PRO automatically scans the 2.4GHz band and switches to the cleaner channel when interference is detected, ensuring a stable connection and clear audio throughout your performance.
Like a motorcycle navigating through crowded traffic more easily than a truck..
It uses NUX's advance Audio Zip/Unzip technology with 24-bit/48kHz quality to ensure clear and stable sound. The 1MHz Zip technology enhances anti-interference performance — “like a motorcycle (1MHz) navigating around traffic along a crowded highway (2.4GHz~2.483GHz) more smoothly than a truck (4MHz).” The Unzip technology preserves high-resolution sound quality without any compromise.
Play, Learn, Record, Repeat
Connect the transmitter directly to your computer via USB and use the B-7 Pro as a two-channel audio interface. Perfect for recording your in-ear mix, rehearsing, or streaming — this feature bridges your stage and studio workflows seamlessly.
Clean, Crystal Clear Wireless Performance
Powered by NUX’s Advanced Audio Zip/Unzip Technology
B-7 PRO supports stereo or mono audio transmission, with stereo data processing being twice that of mono -- providing a clearer and more natural monitoring experience.
24-bit / 48 kHz High-Resolution Audio | 20-20 kHz Frequency Response Range
Versatile I/O for Any Setup
Built to fit seamlessly into any rig — from home studios to professional stages. With dual combo XLR/TRS inputs, you can connect straight from your mixer, interface, or console for crystal-clear monitoring.
A dedicated 3.5mm AUX input lets you blend in backing tracks or reference audio, while the headphone outputs on both the transmitter and receiver give you flexible monitoring options anywhere in your signal chain.
- Balanced XLR / Unbalanced ¼-inch combo jacks (Left + Right)
- Aux Input / 3.5mm (⅛-inch)
- USB-C for Data / Interface
Smart, Stable & Reliable
True Diversity Dual-Antenna + 3-Level Stability + Audio Zip/Unzip
Two antennas on both transmitter and receiver are used to automatically pick the strongest signal, preventing dropouts and dead spots.
With frequency hopping, 1MHz narrowband, and three level stability settings, B-7 PRO can achieve a stable operating range up to 165 ft (50 meters) while outputting smooth, reliable audio.
Operating Range
How Does 3-Level Stability Works?
Level 1 - Low Latency Mode (~7.33ms)
- Prioritizes speed and response time.
- Ideal for practice rooms, home, and small stages.
Level 2 - Standard Mode (~10.85ms)
- Balances latency and stability for most real-world application.
- Works great for club stages, studios, and bigger gig setups with some wireless activity.
Level 3 - Stable Mode (~14.33ms)
- Prioritizes signal reliability and interference-resistance over raw latency.
- Perfect for large venues, outdoor shows, or crowded wireless environments (like festivals or conventions).
Stay Charged, Stay Tuned
Both transmitter and receiver feature built-in lithium-ion batteries that last up to 6 hours of continuous use. When it’s time to recharge, simply dock them using the magnetic charging connector for effortless, secure power-up between sets.
- Magnetic Charging Dock
- 6 Hours non-stop use on full charge
More Features
Get more out of your B-7 PRO!
Specifications
Technical
- Operating Frequency Band 2.4 GHz w/ NUX Intelligent Frequency Hopping
- Audio Quality 24-bit / 48 kHz
- THD+ Noise < 0.01% (typical)
- 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
- Dynamic Range 110 dB (A-weighted)
- Output Level Adjustment Range Mute –86 dB ~ +12 dB
Connectivity
- Operation Range (Line-of-Sight) Up to 165 feet / 50 meters (environment-dependent)
- Frequency Response 20 Hz – 20 kHz
- Latency 7.33 ms (Low Latency Setting) / 10.85 ms (Default) / 14.33 ms (Safe Setting)
Hardware
- Transmitter Dimensions 5.51 × 3.82 × 2.09 inches
- Transmitter Weight 525 g
- Receiver Dimensions 1.85 × 2.80 × 0.87 inches
- Receiver Weight 51 g
- Transmitter Battery Capacity 3.7 V / 3000 mAh
- Receiver Battery Capacity 3.7 V / 400 mAh
- Battery Life Up to 6 Hours
What's Included
1 x B-7 PRO Transmitter, 1 x B-7 PRO Receiver, 1 x DC 9V Power Adapter, 1 x USB-C Cable, 1 x USB-C to USB-A Adapter, 1 x Fixture Clamp, 1 x 1/4 in Nut Connector, User Manual