Work Pro Pulse Drive 1204 – 4-Channel Class D Amplifier with Advanced DSP

The Work Pro Pulse Drive 1204 is a professional-grade 4-channel Class D amplifier designed to deliver high output and precise audio control in a compact 1U rackmount form factor. Each channel produces 300 W at 4 ohms, with the option to operate in bridge-mono mode for 600 W output, making it suitable for subwoofers or high-demand applications. Its integrated Digital Signal Processing (DSP) provides full control over equalization, filtering, compression, and dynamics, ensuring clear, consistent sound in a variety of environments.

Engineered for efficiency and reliability, the Pulse Drive 1204 features Class D topology, minimizing heat generation while delivering powerful performance. Its compact design ensures seamless integration into professional audio setups, whether for touring, fixed installations, or portable PA systems.

Design and Features

The amplifier is equipped with four input channels using XLR connectors, supporting a wide range of audio sources. Each channel has an 8-band parametric equalizer, allowing precise tonal adjustments to suit different rooms or speaker setups. High-pass and low-pass filters help manage frequency response and protect speakers, while built-in compressors and noise gates control dynamics and reduce unwanted noise.

Bridge-mono operation enables a single channel to deliver 600 W of power, ideal for subwoofer integration or high-output requirements. The Pulse Drive 1204 also incorporates a comprehensive protection system, including thermal monitoring, short-circuit protection, and power-on/off muting, ensuring safe and reliable operation under demanding conditions.

Additionally, the amplifier features intelligent signal routing, allowing engineers to optimize input and output paths for complex multi-speaker setups. The compact chassis and lightweight design make it easy to integrate into portable racks, while the robust metal construction ensures durability for repeated transportation and stage use.

Performance and Applications

The Pulse Drive 1204 offers a full-range frequency response from 20 Hz to 20 kHz with total harmonic distortion (THD) below 0.15%, delivering accurate and detailed sound reproduction. Its versatile features make it suitable for a variety of professional audio applications, including:

• Live Sound Reinforcement: Clear, powerful amplification for stage monitors, FOH systems, and medium-to-large concert venues.

• Permanent Installations: Reliable performance for theaters, churches, conference centers, and public address systems.

• Portable Audio Systems: Compact and lightweight design ensures easy transport and setup for mobile applications.

The amplifier supports PC control via Ethernet, allowing remote adjustment of DSP parameters for precise system optimization and integration into larger audio networks.

Specifications

Amplifier Type: Class D
Channels: 4
Output Power: 300 W per channel @ 4 Ω / 600 W in Bridge Mono mode
DSP Features: 8-Band EQ per channel, High-Pass and Low-Pass Filters, Compressor, Noise Gate
Audio Inputs: 4 x XLR
Amplified Outputs: 4 x XLR
Frequency Range: 20 Hz – 20 kHz
THD: <0.15%
Control Interface: PC via Ethernet
Protection: Thermal, Short-Circuit, Power-On/Off Muting
Rackmount: 1U
Dimensions: 483 x 44 x 280 mm
Weight: 4.7 kg
Power Consumption: 1400 W

Conclusion

The Work Pro Pulse Drive 1204 combines high-efficiency Class D amplification with advanced DSP, delivering professional-grade audio performance in a compact, rackmountable design. Its robust protection features, powerful output, and versatile DSP make it an ideal solution for live events, fixed installations, and portable sound systems. The Pulse Drive 1204 provides reliable, high-quality audio control, meeting the demands of professional sound engineers and audio system designers.

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About Work Pro

Work Pro products are engineered and manufactured in Spain, combining advanced technology with rigorous quality control to deliver reliable professional audio solutions. Their modern production facilities integrate automated processes and comprehensive testing, ensuring consistent performance and durability across all products. Over the years, Work Pro has established itself as a trusted name in the professional audio market, offering high-quality amplifiers, speakers, and sound reinforcement equipment that provide excellent performance and value for both touring and installation applications.