Harmonai ACT-520 Dual-Channel True Diversity Wireless Microphone System – 500m Range image 1

Harmonai ACT-520 Dual-Channel True Diversity Wireless Mic – 500m | Professional Stage Microphone

The Harmonai ACT-520 is a professional dual-channel true diversity wireless microphone system operating in the UHF band (610–690 MHz), delivering up to 500 meters of reliable trans...

$15.39

Model: ACT-520
Category: Microphones
Images: 4 images
Status: ready

Product Brief

Harmonai ACT-520 Dual-Channel True Diversity Wireless Mic – 500m | Professional Stage Microphone

Overview

The Harmonai ACT-520 is a professional dual-channel true diversity wireless microphone system operating in the UHF band (610–690 MHz), delivering up to 500 meters of reliable trans...

Price: $15.39
Model: ACT-520
Category: Microphones

Specifications

Parameter	Value
Reception Technology	True diversity reception—greater range and enhanced stability
Effective Operating Distance	500 meters (unobstructed)
Operating Frequency Band	UHF 610–690 MHz
Pilot Tone Method	Digital ID pilot tone technology—prevents frequency interference
Signal Encryption	2048-bit symmetric encryption algorithm—prevents eavesdropping
Maximum Channel Count	520 selectable channels
System Compatibility	Up to 10 units can operate simultaneously
Frequency Response	80 Hz–15 kHz (±3 dB)
Dynamic Range	>110 dB
Total Harmonic Distortion (THD)	<0.5%
Signal-to-Noise Ratio (SNR)	>105 dB (A-weighted)
RF Sensitivity	-100 dBm (30 dB S/N Ratio)
Image Rejection	>75 dB
Output Connectors	XLR × 2 / 1/4-inch jack × 1
Audio Output Level	XLR: +10 dBV / 1/4-inch: +8 dBV
Output Impedance	3 kΩ (XLR / 1/4-inch)
Receiver Operating Voltage	DC 12 V
Receiver Power Consumption	12 W (operating current: 1000 mA)
Operating Temperature	-15°C to 50°C
Microphone Type (Handheld)	Dynamic (condenser optional)
Microphone Polar Pattern	Cardioid
Microphone Sensitivity	>-20 dBm (1 V)
Transmit Power	>+20 dBm (30 mW)
Handheld Microphone Power Consumption	150 mA

Service Support

We support project consultation, model recommendation, bulk purchasing and catalog delivery for retail, multipurpose halls, conference rooms and live events.

Business hours: Monday to Friday 09:00 - 18:30
Inquiry channels: phone / email / website form
Tip: share budget, quantity and use scenario in advance

ACT-520 dual-channel true diversity 500m wireless microphone product image

Product Overview

The ACT-520 is a professional-grade dual-channel true diversity wireless microphone system from Harmonai, operating in the UHF ultra-high-frequency band (610–690 MHz) with an effective range of up to 500 meters (line-of-sight, unobstructed). Equipped with advanced digital ID pilot tone technology and a 2048-bit symmetric encryption algorithm, it completely eliminates frequency interference and eavesdropping risks. Featuring true diversity reception, it delivers extended range and superior signal stability—ideal for stage performances, conference rooms, and multi-purpose halls.

Key Features

✅ 500-meter ultra-long-range transmission: True diversity reception enables up to 500 meters line-of-sight range
✅ 520 selectable channels: One-touch auto-scan for clean frequencies; up to 10 systems operate simultaneously without interference
✅ Dual security protection: Digital ID pilot tone prevents interference + 2048-bit encryption prevents eavesdropping
✅ Intelligent operation: 30-step electronic volume control, one-touch lock, infrared sync, and synchronized battery-level display
✅ High-fidelity sound quality: SNR >105 dB, THD <0.5%, delivering clear, detailed audio
✅ Multi-scenario compatibility: Supports handheld and bodypack transmitters; compatible with dynamic and condenser capsules—ideal for stages of all sizes and conference rooms

Reception Technology

True diversity reception for greater range and enhanced stability

Effective Operating Distance

500 meters (unobstructed)

Operating Frequency Band

UHF 610–690 MHz

Pilot Tone Method

Digital ID pilot tone technology—prevents frequency interference

Signal Encryption

2048-bit symmetric encryption algorithm—prevents eavesdropping

Maximum Channel Count

520 selectable channels

System Compatibility

Up to 10 units can operate simultaneously

Frequency Response

80 Hz–15 kHz (±3 dB)

Dynamic Range

>110 dB

Total Harmonic Distortion (THD)

<0.5%

Signal-to-Noise Ratio (SNR)

>105 dB (A-weighted)

Receiver Operating Voltage

DC 12 V

Receiver Power Consumption

12 W (operating current: 1000 mA)

Microphone Type (Handheld)

Dynamic (condenser optional)

Microphone Polar Pattern

Cardioid

Transmit Power

>+20 dBm (30 mW)

Handheld Audio Response

50 Hz–18 kHz

Mobile Phone EMI Interference Protection

Yes (high-strength anti-interference design)

RF Output Power

110 mW

Handheld Power Supply

1.5 V × 2 (AA batteries)

Battery Life

>5 hours (based on 1800 mA draw)

Output Connectors

XLR × 2 / 1/4-inch jack × 1

Display

LCD × 2

Recommended Applications

The ACT-520 is engineered for stage performances, small and large conference rooms, multi-purpose halls, KTV venues, and live streaming studios. Its 500-meter ultra-long-range transmission combined with true diversity reception ensures stable, dropout-free signal performance in large venues. With support for up to 10 simultaneous units, it’s ideal for major events requiring multiple microphones. Dual transmitter options—handheld and bodypack—plus compatibility with both dynamic and condenser capsules make it equally suited for vocalists, presenters, speakers, and meeting facilitators.

For technical specifications, bulk procurement options, or dedicated support, contact the Harmonai professional team for quotations and expert assistance.