HA6KQ 4-Channel Class TD Professional Power Amplifier — 4 × 2000W at 2Ω
The Haozhiseng Audio HA6KQ is a 4-channel Class TD power amplifier designed for live sound, stage monitoring, rental systems, and fixed audio installations. With rated outputs of 4 × 900W at 8Ω, 4 × 1600W at 4Ω, and 4 × 2000W at 2Ω, it offers flexible amplification for compatible full-range loudspeakers and subwoofers.
Combining Class TD amplification, a stable power supply, selectable voltage gain, and integrated protection, the HA6KQ provides a practical solution for professional PA systems. Its 2U rackmount chassis accommodates four amplifier channels while keeping installation and transport manageable.
Key Features
- Four amplifier channels: Flexible configuration for main loudspeakers, stage monitors, and separate speaker groups.
- Versatile output power: 4 × 900W at 8Ω, 4 × 1600W at 4Ω, or 4 × 2000W at 2Ω.
- Bridged operation: Rated at 2 × 3500W at 8Ω or 2 × 4000W at 4Ω.
- Class TD amplification: Designed to balance amplification efficiency with low-distortion audio reproduction.
- Wide frequency response: 20 Hz–34 kHz within +0/−0.3 dB, measured at 1W into 8Ω.
- Selectable voltage gain: Eight settings from 23 dB to 44 dB for system integration.
- Individual channel controls: Front-panel level adjustment with 31 detented positions.
- Professional connectivity: Balanced XLR inputs with binding-post and speakON outputs.
- Integrated protection: Short-circuit, DC voltage, turn-on/off transient, and current-inrush protection.
- Compact rackmount format: 483 × 88 × 396 mm, with a net weight of 13 kg.
Flexible Four-Channel Amplification
The HA6KQ allows installers and sound engineers to power multiple loudspeaker circuits from one amplifier. Its four channels support flexible configurations for main PA loudspeakers, stage monitors, front fills, and distributed speaker groups.
For compatible systems requiring higher output per loudspeaker circuit, bridged operation combines channel pairs. Select the operating mode and speaker load according to the amplifier’s wiring and operating instructions.
| Output Configuration | Rated Output Power |
|---|---|
| Per-channel operation at 8Ω | 4 × 900W RMS |
| Per-channel operation at 4Ω | 4 × 1600W RMS |
| Per-channel operation at 2Ω | 4 × 2000W RMS |
| Bridged operation at 8Ω | 2 × 3500W RMS |
| Bridged operation at 4Ω | 2 × 4000W RMS |
Low-Distortion Audio Performance
The HA6KQ features a 20 Hz–34 kHz frequency response, THD+N below 0.1% at 1 kHz, and a signal-to-noise ratio above 112 dBA. These specifications support clear reproduction of speech and music across professional sound reinforcement applications.
Channel separation above 70 dB at 1 kHz helps minimize crosstalk between channels, while selectable voltage gain makes it easier to match the amplifier to the system’s signal levels.
Practical Control and Connectivity
Each channel features a balanced 3-pin XLR input and an individual front-panel level control. The 31-position detented potentiometers allow repeatable level adjustments from −∞ to 0 dB.
Selectable gain settings of 23, 26, 29, 32, 35, 38, 41, and 44 dB provide flexibility when integrating the amplifier with external mixers and loudspeaker processors.
Binding-post and speakON output connections accommodate compatible professional loudspeaker wiring.
Integrated Protection
The HA6KQ incorporates protection against short circuits and DC voltage, together with turn-on/off transient and current-inrush protection. These functions help protect the amplifier and connected equipment during startup, shutdown, and abnormal operating conditions.
Power Supply Options
Choose the appropriate power supply version when ordering:
| Voltage Version | Operating Range |
|---|---|
| 110V version | 65–135V AC |
| 220V version | 130–265V AC |
| Worldwide version | 65–265V AC |
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | HA6KQ |
| Brand | Haozhiseng Audio |
| Product Type | 4-Channel Professional Power Amplifier |
| Amplifier Class | Class TD |
| Number of Channels | 4 |
| Output Power at 8Ω | 4 × 900W RMS |
| Output Power at 4Ω | 4 × 1600W RMS |
| Output Power at 2Ω | 4 × 2000W RMS |
| Bridged Output Power at 8Ω | 2 × 3500W RMS |
| Bridged Output Power at 4Ω | 2 × 4000W RMS |
| Frequency Response | 20 Hz–34 kHz (+0/−0.3 dB, 1W into 8Ω) |
| THD+N | <0.1% at 1 kHz |
| Signal-to-Noise Ratio | >112 dBA |
| Channel Separation | >70 dB at 1 kHz |
| Input Connectors | Balanced 3-pin XLR per channel |
| Output Connectors | 2-pole binding posts and speakON |
| Input Impedance | 20 kΩ |
| Selectable Voltage Gain | 23, 26, 29, 32, 35, 38, 41, 44 dB |
| Channel Level Controls | Front-panel potentiometers, 31 detented positions, −∞ to 0 dB |
| Protection | Short circuit, DC voltage, turn-on/off transient, current inrush |
| Operating Voltage — 110V Version | 65–135V AC |
| Operating Voltage — 220V Version | 130–265V AC |
| Operating Voltage — Worldwide Version | 65–265V AC |
| Rack Height | 2U |
| Dimensions (W × H × D) | 483 × 88 × 396 mm |
| Packing Dimensions | 580 × 180 × 560 mm |
| Net Weight | 13 kg |
| Gross Weight | 18 kg |
Applications
- Concerts and live sound reinforcement
- Stage monitoring and portable PA systems
- Touring and rental audio systems
- Theaters and multipurpose halls
- Nightclubs and entertainment venues
- Churches and worship spaces
- Fixed installations with multiple loudspeaker groups
Why Choose the HA6KQ?
The Haozhiseng Audio HA6KQ combines four-channel flexibility, Class TD amplification, and a compact 2U format for professional audio systems. Its output options support a range of compatible loudspeaker loads, while selectable gain, individual channel controls, and professional connections simplify system integration.
Whether powering stage monitors, full-range loudspeakers, or suitable subwoofers, the HA6KQ offers a versatile amplifier platform for portable and installed sound systems.
Contact Haozhiseng Audio for pricing, system configuration support, and OEM/ODM inquiries.
Website: www.hzsaudio.com
