NUX C-9

Q: Is the NUX C-9 suitable for live erhu performances?

Yes, the C-9 is designed for erhu and offers 20-meter transmission and 5.3ms low latency.

Q: What makes the C-9 different from general-purpose instrument wireless systems?

Yes, the C-9 includes a dedicated erhu clip, with a mounting angle and usage scenario that are more suited to traditional Chinese music performance.

Q: Is the C-9 suitable for beginners or teaching use?

Yes, automatic pairing and one-touch mute design lower the learning curve and make teaching more convenient.

Q: How long can the C-9 be used on a single charge?

About 3 hours, and when the charging case is fully charged, it can fully recharge the entire system 2 more times.

Q: Is the C-9 worth buying?

Yes, if you mainly play erhu and need wireless mobility, the C-9 is highly specialized.

NUX C-9

• Wireless pickup system designed for erhu players
• Freer stage movement without cable constraints
• Auto pairing and one-touch mute for easier use
• Dedicated clip fits the erhu for stable, accurate pickup
• Charging case provides portable power for worry-free performances

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NT$2,990

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NUX C-9｜5.8GHz Erhu Dedicated Wireless Pickup System

A 5.8GHz wireless pickup system that makes erhu performances more free

NUX C-9 is NUX's erhu dedicated wireless pickup system. It uses 5.8GHz wireless transmission technology and features 24-bit / 44.1kHz audio specifications, 5.3ms low latency, and a transmission range of up to approximately 20 meters, built specifically for live performance and mobile performance needs of traditional folk instruments.

Compared with traditional wired pickup methods, NUX C-9 achieves greater stage mobility and a more intuitive setup process through automatic pairing, channel detection, and a dedicated erhu clip design. Compared with general-purpose instrument wireless systems, the C-9 is optimized directly for erhu pickup angle, traditional music performance scenarios, and lightweight portability needs.

Quick Facts

Brand:NUX
Model:C-9
Platform:5.8GHz wireless transmission system
Bit Depth:24-bit
Sample Rate:44.1kHz
Latency:5.3ms
Applicable Scenarios:erhu stage performances, traditional music ensemble rehearsals, street performances, teaching demonstrations, mobile sound reinforcement

Who is the NUX C-9 for?

User Recommendation Analysis (Click to expand)

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Who Should Buy

Erhu players who need to move freely on stage and no longer want cables to limit performance movement and positioning
Traditional music teachers who frequently move between classrooms, rehearsal rooms, and small performances, and need a wireless pickup solution that is quick to set up
Street performers or commercial gig musicians who value portability and want stable amplification with lighter gear

Who Should NOT Buy

Users who mainly play guitar, bass, or non-erhu instruments may not fully benefit from the dedicated clip and pickup design
Those who perform continuously for more than 3 hours and cannot conveniently recharge during breaks should plan their charging schedule in advance

NUX C-9 Core Technologies and Features

5.8GHz wireless transmission architecture: Uses the globally open 5.8GHz band, avoiding common congested low-frequency interference environments and providing more stable live wireless transmission performance.
24-bit / 44.1kHz high-quality transmission: With 24-bit Bit Depth and 44.1kHz Sample Rate, it preserves the delicate bowing texture, dynamic changes, and performance layers of the erhu.
5.3ms ultra-low latency: System latency is as low as 5.3ms, making the response feel closer to real time and reducing the time gap between monitoring and actual performance.
Approx. 20-meter effective transmission range: Suitable for teaching spaces, small stages, rehearsal rooms, and mobile performance scenarios, balancing movement range and stable connection.
Dedicated erhu clip design: Includes a clip designed specifically for erhu, better matching the instrument structure and common pickup angles while improving convenience without affecting playing feel.
Automatic pairing and channel detection: Reduces complicated setup steps so you can quickly get into working mode after powering on, especially useful for musicians who need to set up quickly before a performance.
One-touch mute operation: Short-press the transmitter power button to switch to mute mode, making it easier to control signal output during temporary pauses, position changes, or equipment adjustments.
Lightweight body: The combined weight of transmitter and receiver is only 60.9g, making it easier to mount on the instrument and carry around without adding extra burden.
Built-in lithium battery power: Both transmitter and receiver use built-in lithium batteries, with about 3 hours of working time per charge, suitable for rehearsals, teaching, and medium-to-short performances.
Dedicated charging case: Comes with a 3000mAh charging case that combines protection, storage, and recharging; when fully charged, it can fully recharge the entire system 2 times.
USB-C charging: The charging case can be charged via USB-C, making it easier to share cables and power accessories with modern mobile devices.
LED battery indicators: TX, RX, and the charging case all provide LED indicators for quick battery status and charging progress checks.

5.8GHz Wireless Transmission and Automatic Pairing System

Uses the 5.8GHz operating frequency and features automatic pairing and channel detection, reducing the burden of manual setup on site.
RF output power is below 25mW EIRP, balancing stable transmission while also aligning with the practical design direction of portable wireless systems.

24-bit / 44.1kHz High-Fidelity Audio Specifications

With 24-bit Bit Depth and 44.1kHz Sample Rate, it meets the basic sound quality requirements for live sound reinforcement and general recording applications.
The Frequency Response is listed as 20Hz–20kHz, covering the full audible range and preserving the erhu's high-frequency bowing detail and mid-low resonance.

5.3ms Low-Latency Performance Response

System latency is as low as 5.3ms, making it easier for traditional music performers who need precise rhythm and tactile feedback to maintain a natural playing state.
In stage monitoring, teaching demonstrations, and rehearsal situations, it effectively reduces the discomfort caused by delayed sound return.

Dedicated Erhu Clip and Mute Operation Design

The dedicated clip is designed for the erhu structure, allowing more flexible adjustment of pickup position and angle, improving fit and practical convenience.
The transmitter supports quick mute mode switching with a short press of the power button, making temporary silencing or equipment adjustments more efficient during performances.

Built-in Battery and Charging Case System

The transmitter has a built-in 350mAh / 3.7V battery, and the receiver has a built-in 450mAh / 3.7V battery, with about 3 hours of use per charge.
The charging case has a built-in 3000mAh / 3.7V battery and can fully recharge the entire C-9 system 2 times when fully charged, making it suitable for travel and tour recharging.

What's in the Box

1 x Transmitter
1 x Receiver
1 x Charging Case
1 x USB-C Charging Cable
1 x Erhu Clip
1 x User Manual
1 x NUX Sticker

Tech Specs

Brand	NUX
Model	C-9
Platform	Erhu dedicated wireless pickup system
Wireless	5.8GHz
Bit Depth	24-bit
Sample Rate	44.1kHz
Frequency Response	20Hz–20kHz
Latency	5.3ms
Transmission Range	Approx. 20m
RF Output Power	<25mW EIRP
Signal Distortion	0.1% @ 1kHz
Power Source	Built-in lithium battery / powered and stored via charging case
Battery Life	Transmitter / Receiver approx. 3 hours
Charging Method	USB-C
Display	LED indicators
Connector	USB-C (charging case charging)
Dimensions	Transmitter: 50 × 33 × 29.6 mm; Receiver: 59.8 × 36 × 25 mm; Charging Case: 118 × 78 × 41 mm
Weight	Transmitter: 23.8g; Receiver: 37.1g; Charging Case: 121.9g
Battery Capacity	Transmitter: 350mAh / 3.7V; Receiver: 450mAh / 3.7V; Charging Case: 3000mAh / 3.7V

NUX C-9 Pros and Cons

Pros & Notes (Click to expand)

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Pros

Designed for erhu use cases, with a dedicated clip that makes it easier to achieve the ideal pickup angle than general-purpose systems
Features 24-bit / 44.1kHz audio specifications and 5.3ms low latency, balancing sound quality and performance responsiveness
5.8GHz transmission, automatic pairing, and channel detection improve on-site convenience
The transmitter and receiver weigh only 60.9g combined, so carrying and mounting are less burdensome
Includes a charging case that can fully recharge the system 2 additional times, giving more peace of mind on the go

Notes to Know

The transmitter and receiver each offer about 3 hours of working time per charge, so long performances should plan recharging in advance
This product is an erhu dedicated wireless pickup system, and other instruments may not fully match its clip design
Charging requires powering the case via USB-C, so it is recommended to check both the case and unit battery levels before a performance

NUX C-9 FAQ

Q：Is the NUX C-9 suitable for live erhu performances?

▼

A：Yes, the C-9 is designed for erhu and offers 20-meter transmission and 5.3ms low latency.

Q：What makes the C-9 different from general-purpose instrument wireless systems?

▼

A：Yes, the C-9 includes a dedicated erhu clip, with a mounting angle and usage scenario that are more suited to traditional Chinese music performance.

Q：Is the C-9 suitable for beginners or teaching use?

▼

A：Yes, automatic pairing and one-touch mute design lower the learning curve and make teaching more convenient.

Q：How long can the C-9 be used on a single charge?

▼

A：About 3 hours, and when the charging case is fully charged, it can fully recharge the entire system 2 more times.

Q：Is the C-9 worth buying?

▼

A：Yes, if you mainly play erhu and need wireless mobility, the C-9 is highly specialized.

THINK2 Warranty & Support

Service Highlights

Fast Shipping: In-stock items will be shipped within 24 business hours.
Professional Technical Support: Our certified audio engineers provide consultation for installation, licensing, compatibility, and setup.
Comprehensive Warranty & After-Sales Service: Includes both manufacturer warranty and THINK2 customer support.

※ Shipping times are calculated based on business days. Actual warranty follows the manufacturer’s policy. THINK2 provides integration and support assistance.

Warranty & Return Policy

With valid proof of purchase and product serial number, customers are entitled to manufacturer warranty and THINK2 after-sales service.
DOA / Non-human defects: Within 7 days of purchase, after verification, customers may request return or replacement.
Exclusions: Damages from misuse, unauthorized modification, consumable parts, natural disasters, or improper use beyond instructions.
Application Process: Contact customer service during business hours for return instructions.
Service Coverage: Taiwan region primarily; overseas based on logistics standards.

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