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LANGPU

A-420 | Quad UHF Wireless Microphone System / Auto-Scan

A-420 | Quad UHF Wireless Microphone System / Auto-Scan

$249.00 USD
$249.00 USD
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Shipping calculated at checkout.
Configuration
Power Adapter

Feature


• Outstanding Signal Performance:

- No Worries in Large Venues: With unmatched 393ft (120m) Range, delivers crystal-clear audio even in the farthest corners of theaters or conference halls.

- 4-Channel with Flexible Frequency Selection: 4 independent channels × 50 frequency options each 200 adjustable channels.

- Advanced Digital ID Pilot Technology: Acts as an audio shield, assigning a unique identity to mic signals.

 

• Extraordinary Sound Performance:

- 105dB Ultra-Wide Dynamic Range: From whispered murmurs to loud shouts, every nuance can be captured without distortion,  delivering richness and depth.

- 100dB Ultra-High SNR: Virtually erases background noise, producing crystal-clear sound.

 

• Easy-to-Use Control:

- Auto Scan: Automatically detects and avoids crowded channels and interference,  simplifying frequency selection process.

- IR Pairing Technology: A single press pairs the transmitter with the receiver.

- Function Lock: Prevents accidental button presses that could alter presets during performances.

 

• Outstanding Mic Performance:

- Professional Dynamic mic: A high-sensitivity dynamic capsule captures even subtle whispers with clarity, engineered with exceptional high-SPL handling.

- Dual Power Modes: Offers 5mW and 20mW output power — for flexible switching based on the situation.

 

• Comprehensive Mute Protection:

- One-Touch Mute: Instantly toggle mute status via the power/SET button during performance breaks or meeting discussions.

- Auto-Sleep Mute: Automatically activates mute mode when idle to conserve battery—seamlessly resumes operation when picked up without delay.

- Instant Mute on Drop: Built-in sensors trigger instant muting upon accidental drops, completely blocking impact noise from reaching audio systems.

 

Note:

All three microphones support “One-Touch Mute”, but the “Auto-Sleep Mute” and “Instant Mute on Drop” are only available on handheld dynamic wireless mic.

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393 feet! The LANGPU A-420 proves that wireless microphones can cover the large venues with its incredible ultra-long transmission. When it comes to sound, it makes no compromises: with an impressive 105dB ultra-wide dynamic range and 100dB ultra-high signal-to-noise ratio, leaving competitors in the same category far behind. Whether it's for home karaoke, open-air stages, or serious business meetings, this four-channel system handles every scenario with ease, effortlessly adapting to every scenario and delivering outstanding stability and adaptability in any environment.

Exceptional Sound Performance

Thanks to its innovative noise-reduction circuitry, this system delivers an impressive 105dB ultra-wide dynamic range, giving your voice a whole new level of depth.
From a soft whisper to a soaring chorus, every note is captured and brought to
life, making your performance both delicate and impactful.

With a remarkable 100dB SNR, background noise is virtually eliminated, leaving your voice as pure and crystal-clear as it was meant to be.

Easy-to-Use Control

  • Auto-Scan Technology

    The system intelligently analyzes surrounding frequencies and avoids all crowdedbands. It instantly selects the clearest frequency from 200 available channels- completely simplifying the process.

  • Performance Safety Lock

    Activate it with one tap to instantly lock all controls (except volume and IR sync), creating a safeguard for critical events.

All-Around Mute Protection

  • Instant Mute on Drop

    Built-in gyroscopic sensor continuously monitors device status. Even if accidentally dropped during a live performance, the audience will hear virtually no harsh impact noise.

  • Auto-Sleep Power Saving

    Automatically activates mute mode and dims the display after ~3 seconds of inactivity. The system instantly reactivates when lifted.

  • One-Touch Mute Control

    A single press of the power button instantly toggles mute mode—no menu navigation required. Effortlessly silence mic during performance pauses, meeting discussions and whispering with your partner.

Flexible Transmitted Power Switching

Dual-mode RF output (5 mW/20 mW) intelligently adapts to your environment:

High-Power 20 mW Mode: Ideal for large venues with background noise, enhanced signal penetration for stable long-range transmission without interference.

Low-Power 5 mW Mode: Optimized for quiet and compact spaces, preventing signal oversaturation and extending battery life.

Noise-Lock Technology

You will never have to worry about sudden and harsh noise breaking into your performance or talk. This audio stability system works like a personal sound guardian, keeping everything steady and clear.

The system intelligently detects and blocks random electromagnetic interference, preventing any aberrant noise from reaching the speakers.

More Flexible Options

You can choose a bodypack transmitter with a lavalier mic for hands-free mobility—perfect for lectures, presentations, or stage performances; Alternatively, you can choose the conference mic, designed for business meetings, and round table discussions.

The LANGPU A-420 delivers the ideal audio solution for any scenario and combine them freely according to your event needs.

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Specs & Guides

What's in the box ?

Configuration（HD-071 x4）：

• 1 x A-420 Wireless Receiver

• 4 x HD-071 Wireless Handheld Transmitter

• 4 x Receiver Antenna

• 1 x Power Adapter

• 1 x 1/4” Audio Cable

• 1 x 6.35MM to 3.5MM Adapter

• 8× AA Batteries (included depending on shipping regulations)

• 1 x User Manual

Configuration（HD-071 ×2 & LA-202 ×2）：

• 1 x A-420 Wireless Receiver

• 2 x HD-071 Wireless Handheld Transmitter

• 2 x LA-202 Wireless Lavalier Beltpack Transmitter

• 4 x Receiver Antenna

• 1 x Power Adapter

• 1 x 1/4” Audio Cable

• 1 x 6.35MM to 3.5MM Adapter

• 8× AA Batteries (included depending on shipping regulations)

• 1 x User Manual

Configuration（HD-071 ×1 & HY-804 ×2）：

• 1 x A-420 Wireless Receiver

• 2 x HD-071 Wireless Handheld Transmitter

• 2 x HY-804 Wireless Conference Transmitter

• 4 x Receiver Antenna

• 1 x Power Adapter

• 1 x 1/4” Audio Cable

• 1 x 6.35MM to 3.5MM Adapter

• 8× AA Batteries (included depending on shipping regulations)

• 1 x User Manual

Specs

FUNCTIONS

 

Frequency Range:

UHF 512MHz-690MHz

Frequency Stability:

≤ ±10ppm

Operating Range:

≥105dB

Distortion:

≤0.3%

Frequency Response:

40Hz-18kHz

Tone Output:

Independence:0-160mV

Mixed:0-160mV

RECEIVER

Power Supply:

100-240V~50/60Hz

Operating Voltage:

DC 12V⎓600mA

Rated power consumption:

6W

S/N Ratio:

>100dB

Feint Disturbing Ratio:

>80dB

Channel Disturbing Ratio:

>80dB

Sensitivity:

-100dBm

Screen

LCD

TRANSMITTER

RT Power Output:

Max20mW

Modulation:

FM

Max Modulation:

±45kHz

Higher Harmonic:

<-60dBc

Battery Voltage:

3V(2XAA1.5V)

 

How to use ?

A-420 Connect Your Device

Quality Guarantee

• 30-Day Hassle-Free Returns: You can request a refund or return for any reason within 30 days of receiving the product.

• 1-Year Manufacturer’s Warranty: Replacement-only policy (no repairs).

• Extended Warranty Available: Registering product can let you receive an additional 6 months of warranty of replacement-only policy (no repairs).