H133S-2CH 1700W + 550W 2-Channel Class D DSP Plate Amplifier Module for Active PA & Line Array Speakers
Product Overview
The H133S-2CH is a high-power 2-channel Class D DSP plate amplifier module designed for professional active PA speakers, line array systems, column speakers, and bi-amped loudspeaker applications.
Delivering 1300W + 300W at 8Ω and 1700W + 550W at 4Ω, the H133S-2CH provides powerful and stable output for low-frequency and mid/high-frequency drivers. Its integrated DSP processing allows precise control of crossover, EQ, delay, limiter, gain, and polarity, helping speaker manufacturers and system engineers achieve accurate sound tuning and reliable performance.
With a compact plate amplifier structure, efficient Class D design, USB and RS-485 DSP control, and comprehensive protection functions, the H133S-2CH is an ideal solution for active speaker manufacturing, OEM loudspeaker projects, touring sound systems, and fixed professional audio installations.
At-a-Glance Specifications
Total Output Power: 1700W LF + 550W MF/HF
Amplifier Type: High-efficiency Class D
Channels: 2 independent DSP-controlled outputs
Signal Input: Balanced XLR
DSP Control: USB and RS-485
Cooling: Aluminum heat dissipation structure
Protection: Short circuit, DCP, OVP, UVP, OCP, OTP
Key Features
High-Power 2-Channel Output
The H133S-2CH delivers 1700W + 550W at 4Ω, making it suitable for professional active speaker systems that require strong low-frequency power and clear mid/high-frequency output.
Built-In DSP Processing
The integrated DSP engine supports Mute, Polarity, Gain, Delay, Limiter, EQ, and X-Over functions, allowing precise system tuning for different cabinet designs and sound requirements.
Bi-Amp Speaker Design
Two independent amplifier channels allow separate power control for LF and MF/HF drivers. This design is ideal for active two-way loudspeakers, line array cabinets, and column speaker systems.
High-Efficiency Class D Platform
The Class D amplifier design offers high power density, low heat generation, and stable long-term operation, helping reduce cabinet weight while maintaining professional output performance.
USB & RS-485 Control
The module supports PC software control through USB or RS-485, making it easy to adjust DSP parameters, manage presets, and fine-tune the speaker system.
Professional Protection System
Built-in protection includes short circuit, DC protection, over-voltage, under-voltage, over-current, and over-temperature protection, helping protect both the amplifier and speaker drivers.
Typical Applications
Active PA speaker systems
Bi-amped line array speakers
Column array speaker systems
Full-range active loudspeakers
Powered subwoofer systems
Touring sound systems
Fixed installation audio projects
OEM / ODM speaker manufacturing
Technical Specifications
| Item | Specification |
|---|---|
| Model | H133S-2CH |
| 8Ω Stereo Power | 1300W + 300W |
| 4Ω Stereo Power | 1700W + 550W |
| Frequency Response | 20Hz–20kHz ±1dB |
| THD+N | <0.1% at 1kHz, 1W, 8Ω |
| Signal-to-Noise Ratio | >100dB at 1kHz |
| Channel Separation | >80dB at 1kHz |
| Amplifier Class | Class D |
| Protection | Short Circuit, DCP, OVP, UVP, OCP, OTP |
| Operating Voltage | 110V version: 90V–135V / 220V version: 180V–265V / PFC version: 90V–265V |
| Input Sensitivity | 1V |
| Input Impedance | 20kΩ |
| DSP Functions | Mute, Polarity, Gain, Delay, Limiter, EQ, X-Over |
| DSP Control | USB and RS-485 |
| Dimensions | 326 × 153 × 128 mm |
| Net Weight | 3.25 kg |
| Gross Weight | 4.25 kg |
Why Choose H133S-2CH?
The H133S-2CH combines high-power Class D amplification, built-in DSP control, professional protection, and compact plate amplifier design in one integrated module. It helps speaker manufacturers build reliable active PA speakers, line array systems, and bi-amped loudspeakers with faster development, easier tuning, and stable long-term performance.
