Mr Senma U4 4-in-1 wireless microphone System | Professional-Grade 4-Channel Handheld Microphone | All-Metal Design ·
True U-Band · Radar Frequency Scanning · 100-Meter Long-Range Transmission
As a Microphone Manufacturer deeply rooted in the audio industry, we understand users' pursuit of ultimate sound
quality, stability, and portability. To this end, we have developed the U4 four-channel wireless microphone system —
specifically designed for stage performances, training presentations, company meetings, wedding ceremonies, outdoor
events, home karaoke, and KTV rooms.
It features 200 adjustable frequencies, dual-channel reception, PLL precise frequency locking, infrared frequency
matching, and radar frequency scanning. It also supports stable transmission distances of up to 100 meters in open
environments, ensuring no frequency interference, no feedback, and no frequency overlap!
Whether you're a music enthusiast, a live streamer, or a professional event planner, the U4 meets your expectations
for a high-quality audio system.
✅ True UHF high-frequency technology | Stronger interference resistance | Clearer sound quality
The U4 operates in the UHF ultra-high-frequency band (610–690 MHz) and is equipped with imported high-frequency
components, effectively avoiding interference signals from ordinary wireless devices to ensure stable wireless
connectivity even in complex environments.
This means: Even in scenarios where multiple wireless microphones are used simultaneously, the U4 still delivers
high-fidelity sound quality, reproducing vocal details and enhancing the overall listening experience.
Additionally, its frequency response range spans 45 Hz to 18 kHz ±3 dB, covering the fundamental and overtone
frequencies of vocals and instruments, ensuring every note is clearly discernible.
✅ Up to 200 adjustable channels | Intelligent radar frequency scanning | One-touch locking of clean frequency points
The U4 is equipped with 200 selectable frequency channels. Using radar frequency scanning technology, it can quickly
identify clean frequency points in the surrounding environment to avoid conflicts with other wireless devices.
Imagine this: at a large event venue, multiple microphones are operating simultaneously. The U4, with its powerful
frequency adjustment capabilities, ensures that each set of equipment can operate independently without
interference.
Combined with infrared frequency synchronization functionality, simply press a button to synchronize the transmitter
and receiver frequencies, offering simple and efficient operation suitable for beginners or non-technical users.
✅ Dual-channel reception | One-to-four configuration | Meets the needs of multiple users
The U4 is a one-to-four wireless microphone system, meaning a single main unit can simultaneously receive signals
from four wireless microphones, making it ideal for team presentations, choir performances, conference hosting, and
other scenarios requiring collaboration among multiple users.
Supports various combinations of handheld microphones, lavalier microphones, headset microphones, and gooseneck
conference microphones;
The main unit is equipped with a high-performance receiver module, supporting dual-channel reception for higher
stability;
In open, unobstructed environments, the effective transmission distance can reach up to 100 meters;
Even in complex environments, it achieves low latency, low distortion, and high signal-to-noise ratio audio
performance;
✅ All-metal body | Durable and shock-resistant | Professional mesh design
The U4 features an all-metal structural shell, which is sturdy, durable, and resistant to pressure and shocks,
ensuring no deformation even after prolonged use. Paired with a professional-grade anti-pop mesh, it effectively
reduces pop noise interference and enhances voice clarity.
It is particularly suitable for high-intensity use scenarios such as school activities, commercial performances, and
outdoor hosting.
The handheld microphone uses a condenser microphone design with high sensitivity, accurately capturing vocal details
and faithfully reproducing the natural sound.
✅ Ultra-long battery life | Battery-powered | Portable and flexible
The U4 transmitter is powered by two AA batteries, providing approximately 10 hours of continuous operation under
normal use, meeting all-day usage requirements.
The receiver unit supports a DC 12V/1A power adapter;
low-power design, energy-efficient and environmentally friendly;
no need for frequent battery replacement, making usage more convenient;
Additionally, the waist-mounted transmitter can be easily paired with lavalier microphones or headset microphones,
suitable for various scenarios such as interviews, mobile presentations, and outdoor live streaming.
✅ High-Performance Audio Specifications | Comparable to Professional Recording Equipment
The U4 also excels in audio performance:
Maximum deviation: ±45 kHz
Sensitivity: 6 dBμV @ S/N > 60 dB
Total harmonic distortion: <0.7% @ 1 kHz
Frequency response: 45 Hz to 18 kHz
Overall signal-to-noise ratio >105 dB
These parameters indicate that the U4 is not only suitable for live sound reinforcement but also fully capable of
handling professional applications with high audio quality requirements, such as small recording studios, podcast
recording, and voice-over production.
✅ Multiple usage modes | Flexible adaptation to various scenarios
U4 supports multiple microphone configurations:
Handheld microphone
Lavalier microphone
Headset microphone
Gooseneck conference microphone (supports 360° adjustment)
Whether it's teaching, corporate events, wedding ceremonies, family karaoke, or short video shooting, U4 can handle
it all with ease.
Its supercardioid pickup pattern ensures more focused sound capture, lower background noise, and clearer voice
quality.
✅ Technical Upgrades | Craftsmanship | Original Custom Design
If you don't like this product, we can custom-design one to match your aesthetic preferences and style.
The U4 underwent a 300-day R&D cycle and 7,200 hours of testing, incorporating feedback from over 2,000 users, to
create this professional wireless microphone system that combines performance, design, and
craftsmanship.
It has passed rigorous durability, temperature, and humidity tests;
ensuring that every U4 undergoes strict quality inspection before shipment;
✅ Conclusion | Why choose the U4 four-channel wireless microphone?
If you are looking for a professional wireless microphone system that offers:
Stable transmission
Clear sound quality
User-friendly operation
Wide applicability
High cost-effectiveness, then the U4 four-channel wireless microphone is the perfect choice for you.
From base frequency to frequency response, from sound power to signal-to-noise ratio, from dynamic to condenser
microphone capsules, the U4 demonstrates the technical expertise and quality commitment of a professional microphone
manufacturer in every detail.
*The product images and specifications shown
on our website may differ from the actual products due to different versions.
