Nux C-7 Wireless In-Ear Monitoring ISM 5,8 GHz

Wireless In-Ear Monitoring with 5.8 GHz Stability

Operating on the 5.8 GHz ISM band, the NUX C-7 Stereo Wireless In-Ear Monitor System converts any wired earphones into a cable-free monitoring rig with stable, low-interference transmission and 24-bit audio. Up to 30 m of range and 6 hours of battery per charge let performers move freely. The 3,000 mAh charging case recharges both units approximately twice, extending total runtime past 18 hours. Plug-and-play 1/8" and 1/4" inputs make the C-7 compatible with audio interfaces, mixers, livestreaming devices, and personal monitoring systems.

What Sets This Wireless IEM Apart

The 0.87-inch display on both units shows audio signal, battery level, pairing mode, and EQ settings at a glance. One-touch frequency hopping auto-selects the cleanest channel on startup, while manual mode offers 10 channels for one-to-many setups. Three mounting options — clip, lanyard, and magnetic — let performers position the receiver however suits their setup.

Wireless Performance and Latency

The 5.8 GHz band avoids the crowded 2.4 GHz spectrum where Wi-Fi routers compete.

• Frequency Band: 5.8 GHz ISM (5.725 GHz – 5.85 GHz)
• Operating Range: up to 30 m
• Latency: 5.8 ms (firmware 1.0.3), 7.5 ms (firmware 1.0.2)
• Dynamic Range: 96 dB

Battery Life and Charging Case

Each unit runs approximately 6 hours per charge. The 3,000 mAh charging case stores and recharges both units approximately twice.

• Transmitter Battery: 3.7 V / 750 mAh
• Receiver Battery: 3.7 V / 500 mAh
• Charging Case: 3.7 V / 3,000 mAh — 2 full recharges, 18+ hours total
• Charging Time: approximately 3 hours via USB-C

Inputs, Pairing Modes, and EQ

The transmitter accepts 1/8" or 1/4" TRS stereo input. Stereo and Mono modes adapt to headphone outputs versus line/aux outputs from mixers.

• Inputs: 1/8" (3.5 mm) TRS or 1/4" TRS stereo
• Recommended Headphone Impedance: 16–32 Ω
• Max Output Power (Receiver): 57 mW RMS
• Pairing Modes: Auto (1-to-1) and Manual (1-to-multiple, 10 channels)
• EQ Presets: 5 monitoring presets reduce the occlusion effect