HA13K 2-Channel Class TD Power Amplifier for Professional Subwoofer and Full-Range Systems
The Haozhiseng Audio HA13K is a high-power, 2-channel Class TD power amplifier designed for professional subwoofer and full-range loudspeaker systems. Delivering 2 × 2350W at 8Ω, 2 × 4400W at 4Ω, and 2 × 6500W at 2Ω, it offers flexible output configurations for live sound, rental systems, entertainment venues, and fixed installations.
Built with original ON transistors, original Neutrik connectors, and a pure copper heatsink, the HA13K combines professional connectivity with efficient heat dissipation. Independent channel level controls and integrated protection make it a practical choice for demanding audio systems.
Key Features
- High-power, 2-channel amplification: Suitable for compatible subwoofers and full-range loudspeakers.
- Flexible output configurations: Supports 8Ω, 4Ω, and 2Ω loads per channel.
- Class TD output circuitry: Combines efficient power delivery with low-distortion audio reproduction.
- Pure copper heatsink: Helps transfer heat away from power components.
- Original ON transistors: Used in the amplifier’s power circuitry.
- Original Neutrik connectors: Provide professional audio connections.
- Independent level controls: Front-panel, 31-position detented potentiometers for each channel.
- Integrated protection: Covers short circuits, DC voltage, turn-on/off transients, and current inrush.
Powerful Amplification for Bass and Full-Range Audio
The HA13K provides substantial output for professional loudspeaker systems, from dedicated subwoofer amplification to full-range sound reinforcement. Two channels allow separate level adjustment for connected loudspeaker groups, while bridged operation provides higher output for compatible loads.
| Output Configuration | Rated Output Power |
|---|---|
| Stereo, 8Ω per channel | 2 × 2350W RMS |
| Stereo, 4Ω per channel | 2 × 4400W RMS |
| Stereo, 2Ω per channel | 2 × 6500W RMS |
| Bridged Mono, 8Ω | 8800W RMS |
| Bridged Mono, 4Ω | 13000W RMS |
Choose the operating mode and loudspeaker load according to the amplifier’s wiring and operating instructions.
Clear Audio Reproduction
With a frequency response of 20 Hz–34 kHz (+0/−0.3 dB, 1W into 8Ω) and THD+N below 0.1% at 1 kHz, the HA13K supports detailed reproduction of speech and music.
A signal-to-noise ratio above 112 dBA helps maintain a low noise floor, while channel separation above 70 dB at 1 kHz helps minimize crosstalk.
Professional Construction and Connectivity
A pure copper heatsink supports heat dissipation during operation. Original ON transistors and Neutrik connectors complement a design intended for professional audio applications.
Balanced 3-pin XLR inputs connect to compatible mixers and loudspeaker processors. Binding-post and speakON outputs provide connection options for suitable speaker cabling.
Voltage Options
Choose the appropriate power-supply version when ordering:
- 110V version: 65–135V AC
- 220V version: 135–265V AC
- Wide-voltage version: 90–265V AC
The operating range depends on the selected version.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | HA13K |
| Brand | Haozhiseng Audio |
| Product Type | Professional Power Amplifier |
| Number of Channels | 2 |
| Output Circuit | Class TD |
| Stereo Output at 8Ω | 2 × 2350W RMS |
| Stereo Output at 4Ω | 2 × 4400W RMS |
| Stereo Output at 2Ω | 2 × 6500W RMS |
| Bridged Mono Output at 8Ω | 8800W RMS |
| Bridged Mono Output at 4Ω | 13000W RMS |
| Frequency Response | 20 Hz–34 kHz (+0/−0.3 dB, 1W/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 |
| Output Connectors | 2-pole binding posts and speakON |
| Input Impedance | 20 kΩ |
| Channel Level Adjustment | Front-panel, 31-position detented potentiometer, −∞ to 0 dB |
| Power Transistors | Original ON transistors |
| Connector Brand | Original Neutrik connectors |
| Heatsink | Pure copper |
| Protection | Short circuit, DC voltage, turn-on/off transients, current inrush |
| Operating Voltage — 110V Version | 65–135V AC |
| Operating Voltage — 220V Version | 135–265V AC |
| Operating Voltage — Wide-Voltage Version | 90–265V AC |
| Packing Dimensions | 570 × 580 × 180 mm |
| Packing Quantity | 1 unit per carton |
| Net Weight | 13 kg |
| Gross Weight | 18 kg |
Applications
- Live performances and touring sound systems
- Professional subwoofer and full-range amplification
- Rental audio systems
- Nightclubs, bars, and entertainment venues
- Churches and worship centers
- Theaters and auditoriums
- Fixed professional audio installations
Why Choose the HA13K?
The Haozhiseng Audio HA13K brings high-output, 2-channel Class TD amplification to professional sound systems that need flexible speaker configurations and straightforward operation.
Its copper heatsink, original ON transistors, Neutrik connectors, and integrated protection support a practical amplifier solution for both mobile production and permanent installations.
Contact Haozhiseng Audio for pricing, voltage-version availability, system configuration support, and OEM/ODM inquiries.
Website: www.hzsaudio.com
