B-7 PRO
STEREO WIRELESS IN-EAR MONITOR SYSTEM
Stereo Wireless In-Ear Monitor System
for live performances
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 it 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.
High Quality Stereo Audio Monitor
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.
NEW Firmware Version V1.0.6 adds
Earphone EQ and phase inversion features
- New 5 earphone EQ Presets: Great for easing ear canal occlusion and achieving a clearer, more comfortable singing experience.
- New phase inversion function: In complex stage environments, it helps prevent phase cancellation caused by sound pickup or monitor mixing. With quick correction, it reduces low-frequency loss or excessive buildup.
5 earphone EQ Presets
Fearless Against the Occlusion Effect
When singing with in-ear monitors, sound waves resonate inside the ear canal, creating the occlusion effect, which amplifies frequencies below about 1000 Hz and makes the sound feel muffled. Singers may perceive their own voice as “booming,” leading to misjudgment of pitch and volume. To address this issue, the system is equipped with multiple in-ear EQ presets, effectively reducing the occlusion effect. The result is a clearer, more natural sound that helps you perform with greater confidence on stage.
You can freely switch between five different in-ear EQ curves to suit various performance environments and personal listening preferences.
Phase Inversion
In complex stage environments, multiple sound sources or overlapping monitor mixes may cause phase cancellation, leading to low-frequency loss or excessive buildup in certain ranges. The B-7 Pro is equipped with a phase inversion function, allowing you to quickly adjust phase in the menu to achieve a more balanced and clear monitoring sound.
You can freely switch between five different in-ear EQ curves to suit various performance environments and personal listening preferences.
Intelligent Frequency Hopping
While in use, the B-7 Pro automatically scans the 2.4 GHz band and switches to the cleaner channel when interference is detected, ensuring a stable connection and clear audio throughout your performance.
3-Level Stability and Audio Zip/Unzip
The B-7 Pro offers 3 levels of stability (7.33 / 10.85 / 14.33 ms). Higher stability levels increase the number of signal transmissions, with up to 12 transmissions every 14.33 ms. (Since interference is time-varying, more frequent transmissions can help avoid interference issues.)
The stereo B-7 Pro can simultaneously process both left and right audio channels. Compared to other 2.4 GHz mono wireless systems, its data processing count is more than double. Powered by NUX’s advanced Audio Zip/Unzip technology, it delivers 24-bit / 48 kHz high-quality audio even within a narrow 1 MHz bandwidth, while supporting a full frequency response of 20 Hz–20 kHz. The result is a wider, more natural, and truly immersive stereo experience.
Operating range up to 165 ft
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, it stable operating range up to 165 ft (50 meters) for smooth, reliable audio.
High-Definition Color LCD Display
The B-7 Pro features a high-definition color LCD display. The 2.4-inch screen shows battery levels, input volume and settings in real time for easy monitoring and quick adjustments.
Performance & Comparison
Long battery lifetime
The B-7 Pro features large Li-ion batteries inside both the transmitter and receiver. The battery life lasts up to 6 hours.
Magnetic Charging Port
Easy recharging, the transmitter has a magnetic charging port—just place the receiver on it to start charging, no plugs needed. The magnetic connection is secure and allows you to quickly recharge during breaks.
Application
Two 1/4-inch or XLR combo jacks support left and right stereo input. They accept balanced XLR or unbalanced 1/4-inch audio signals, with a maximum input level of +22dBu. You can connect a mixer or an audio interface, or use the 1/8-inch Aux input to connect an MP3 player, cellphone, or other digital personal mixer.
USB audio recording
By connecting the B-7 Pro’s TX (transmitter) to your cellphone or computer, you can use the B-7 Pro as a USB interface for recording. No matter what you play with a band on stage, you can record all the sounds you hear from the monitor. Enjoy!
Reminder
If using the B-8 with the B-7 Pro, keep the B-8 TX away from the B-7 Pro RX to avoid interference. For example, wear the B-8 TX on your strap and place the B-7 Pro RX on the opposite side of your body (see image).
Customize your own Boot-up picture
You can customize the boot-up picture with a GIF. Download the “NUX GIF Customizer” app and follow these steps. Download and install “NUX GIF Customizer” from the Support section. Connect B-7 Pro DISPLAY and set BOOT-UP PICTURE to USER.
Fixture Clamp
You can use the NUX NFC-01 Fixture Clamp or other compatible camera clips to attach the transmitter to a microphone stand or drum rack. The B-7 Pro transmitter can also be connected via XLR cable and placed near the musician.
Free yourself while playing
Free yourself with the B-7 Pro Stereo Wireless In-Ear Monitor System and enjoy high-quality audio.
Firmwares
Softwares
- Version: -
- Update Date: -
– Stereo in-ear monitor wireless system for connecting to mixer aux outputs, mixer main
line outputs, audio interfaces or to the headphone outputs of digital personal mixers
– Suitable for personal practice, live performances, rehearsals, and streaming applications
– 2.4 GHz wireless with true diversity antennas for a stable connection
– Pro-series for stable coexistence in environments with heavy wireless traffic
– Intelligent frequency hopping avoids interference automatically
– 79 channels with 1 MHz bandwidth for enhanced wireless compatibility
– 3-level stability (7.33 ms / 10.85 ms / 14.33 ms); increasing stability levels can improve wireless stability
– The transmitter provides magnetic charging for fast and secure receiver recharging
– Transmitter/Receiver battery life up to 6 hours
– Customizable startup screen UI for personal style
– USB Type-C audio recording interface, suitable for connecting to a computer or smartphone for recording
– Auto-off: It automatically turns off after 10 minutes of no connection or if the connection is lost
– Mono and stereo input modes
– 5 earphone EQ Presets. Effectively Avoids the Occlusion Effect
– Phase Inversion. Quick correction reduces low-frequency loss or buildup
– 1/4″ or XLR audio input on transmitter
– 1/8″ aux in audio input on transmitter
– 1/8″ headphone output on transmitter and receiver
– 2.4″ high-resolution color screen
– 24-bit / 48 kHz audio quality
– Up to 165 ft wireless range (line-of-sight)
– 20 Hz–20 kHz frequency response
– 110 dB dynamic range
– 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
