Plate Amplifier Module
Plate amplifier module Model: HZS-PA300D

Plate Amplifier Module

300W Class D plate amplifier module Built-in DSP with 4-band parametric EQ Limiter, subsonic filter and protection circuits Universal 100-240V AC input Compact form factor for easy cabinet integration

OEM/ODM Customization

Logo Customization Color Customization Panel Customization Packaging Customization Acoustic Tuning Circuit Design Configuration Customization

50

Min. Order

5-7 business days

Sample Lead Time

10-15 business days

Bulk Lead Time

Custom panel cutout dimensions and DSP presets available for bulk OEM orders. Sample units with your branding available before mass production.

2-Year Warranty
Fast Lead Time
60+ Countries

The Haozhiseng Plate Amplifier Module is a high-efficiency, compact Class D amplifier module designed for integration into passive speaker cabinets, subwoofers and custom enclosures. Engineered for OEM/ODM partners seeking a reliable, cost-effective active amplification solution, this module delivers clean, powerful output with minimal footprint. Ideal for manufacturers, system integrators and brands looking to build active speaker systems with consistent, professional-grade performance.

Amplifier Specifications

Channels
1 (Mono)
Output Power
300W RMS @ 4 Ohm
Frequency Response
20Hz - 200Hz (-3dB)
THD
< 0.05% @ 1kHz, rated power
Input Sensitivity
0 dBu balanced / -10 dBV unbalanced
Protection Features
Short-circuit protection DC offset protection Over-temperature protection Over-current protection Subsonic filter (15Hz, 24dB/oct)

Speaker Specifications

Driver Configuration
N/A - amplifier module only
Frequency Response
N/A
Impedance
4 Ohm minimum load
Sensitivity
N/A
Max SPL
N/A
Coverage Angle
N/A

Technical Data

Parameter Value
Model HZS-PA300D
Output Power 300W RMS @ 4 Ohm
Amplifier Class Class D
Frequency Response 20Hz - 200Hz (-3dB)
THD+N < 0.05% @ 1kHz
Input Sensitivity 0 dBu / -10 dBV
Input Impedance 10 kOhm balanced
S/N Ratio > 100 dB (A-weighted)
Power Supply Universal 100-240V AC, 50/60Hz
Efficiency > 85%
Cooling Convection / optional fan
Panel Cutout (WxH) 260 x 210 mm
Weight 1.8 kg

CE

Compliant with European Low Voltage Directive and EMC Directive for EU market entry.

RoHS

All components comply with EU RoHS Directive for restriction of hazardous substances.

FCC

FCC Part 15 Class B compliant for North American market.

Coverage & Capacity

Single module powers one active subwoofer or full-range cabinet up to 300W RMS.

Recommended Configuration

Pair with a 12" or 15" high-excursion woofer in a ported cabinet tuned to 35-45Hz for optimal subwoofer performance. For full-range applications, use with a 2-way cabinet featuring a 10" woofer and 1" compression driver.

System Components

  • Plate Amplifier Module (HZS-PA300D) ×1

    Main amplifier module with DSP, EQ and protection circuits built in.

  • IEC Power Inlet with Fuse ×1

    Standard IEC C14 inlet with integrated fuse holder.

  • XLR / RCA Input Connectors ×1 set

    Balanced XLR and unbalanced RCA inputs for flexible signal connection.

  • Speaker Output Terminal ×1

    High-current binding post output rated for 4 Ohm minimum load.

OEM/ODM Inquiry

Ready to Source
Plate Amplifier Module?

Tell us your requirements and our team will respond within 18 hours with factory-direct pricing, lead times, and customization options.

  • 2-year warranty on all products
  • Response within 18 hours
  • Full OEM/ODM customization available
  • Shipped to 60+ countries worldwide
[email protected] WhatsApp: +86 191 9552 6661
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