Harmonai ACT-3280 Wireless Microphone System image 1

Harmonai ACT-3280 Dual-Handheld UHF Wireless Microphone System — Professional KTV & Stage Grade

The Harmonai ACT-3280 is a professional dual-handheld UHF wireless microphone system featuring 610–690 MHz frequency range, digital ID pilot tone technology, 200 selectable channel...

$98.93

Model: ACT-3280
Category: Microphones
Images: 4 images
Status: ready

Product Brief

Harmonai ACT-3280 Dual-Handheld UHF Wireless Microphone System — Professional KTV & Stage Grade

Overview

The Harmonai ACT-3280 is a professional dual-handheld UHF wireless microphone system featuring 610–690 MHz frequency range, digital ID pilot tone technology, 200 selectable channel...

Price: $98.93
Model: ACT-3280
Category: Microphones

Specifications

Parameter	Value
Operating Frequency Band	UHF 610–690 MHz
Pilot Tone Method	Digital ID Pilot Tone
Encryption Method	2048-bit symmetric encryption
Effective Transmission Range	100 meters (line-of-sight)
Selectable Channels	200 channels
System Compatibility	Up to 40 units operating simultaneously
Frequency Response (Receiver)	80 Hz – 15 kHz (±3 dB)
Frequency Response (Handheld Transmitter)	50 Hz – 18 kHz
Dynamic Range	> 110 dB
Signal-to-Noise Ratio	> 105 dB (A-weighted)
System Total Harmonic Distortion (THD)	< 0.5%
Receiver THD	< 0.01%
RF Sensitivity	−100 dBm (30 dB S/N)
Reception Sensitivity	−105 dBm with diversity reception
Image Rejection	> 75 dB
Adjacent-Channel Interference Rejection	> 60 dB
Output Connectors	XLR ×2 / 6.35 mm jack ×1
Audio Output Level (XLR)	+10 dBV
Audio Output Level (6.35 mm)	+8 dBV
Output Impedance	3 kΩ
Electronic Volume Control	20 steps
Receiver Display	LCD ×2
Receiver Operating Voltage	DC 12 V
Receiver Operating Current	1000 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

Harmonai ACT-3280 Dual-Handheld UHF Wireless Microphone System product image

Product Overview

The Harmonai ACT-3280 is a professional dual-handheld UHF wireless microphone system operating in the UHF band (610–690 MHz) with advanced Digital ID Pilot Tone Technology, fully eliminating interference common in traditional UHF systems. The system offers 200 selectable channels and supports up to 40 units operating simultaneously without cross-talk—ideal for large-scale performances, conferences, and entertainment venues. Radio signals are secured using 2048-bit symmetric encryption for private, secure transmission. Equipped with diversity reception technology, the effective transmission range reaches 100 meters in open environments.

Operating Frequency Band

UHF 610–690 MHz

Effective Transmission Range

100 meters (line-of-sight)

Selectable Channels

200 channels

System Compatibility

Up to 40 units operating simultaneously

Frequency Response (Receiver)

80 Hz – 15 kHz (±3 dB)

Frequency Response (Handheld Transmitter)

50 Hz – 18 kHz

Signal-to-Noise Ratio

S/N > 105 dB (A-weighted)

Dynamic Range

> 110 dB

Total Harmonic Distortion (System)

THD < 0.5%

Total Harmonic Distortion (Receiver)

THD < 0.01%

RF Sensitivity

−100 dBm (30 dB S/N)

Reception Sensitivity

−105 dBm with diversity reception

Output Connectors

XLR ×2 / 6.35 mm jack ×1

Audio Output Level

XLR: +10 dBV / 6.35 mm: +8 dBV

Electronic Volume Control

20-step precision adjustment

Display

LCD ×2 (receiver) / LCD (handheld)

Microphone Element Type

Dynamic (cardioid polar pattern)

Transmit Power

> +20 dBm (10 mW)

Handheld Battery

2 × AA (1.5 V), runtime > 5 hours

Receiver Power Supply

DC 12 V / 1 A

Receiver Power Consumption

12 W

Operating Temperature

−15°C to 50°C

Encryption Method

2048-bit symmetric encryption

Interference Rejection

Mobile phone electromagnetic interference rejection / Adjacent-channel rejection > 60 dB

Smart Features

6-second idle mute / Drop mute / Auto power-off after 10 minutes / Low-battery warning

Feedback Suppression

Acoustic feedback suppression function

Applications

The Harmonai ACT-3280 is widely used in professional KTV entertainment, live stage performances, conference speaking, multi-function halls, and home entertainment. Its 200-channel selection and support for up to 40 concurrent units meet multi-channel demands of large events; intelligent mute and feedback suppression ensure reliable, worry-free operation—whether for professional shows or family karaoke, it delivers pure, high-fidelity vocal reproduction.

Learn more about Harmonai professional audio solutions—contact us today for detailed quotations and technical support.