LEA Professional CS704 4-Channel 700W Power Amplifier with DSP, Ethernet, IoT-Enabled


2 in stock (can be backordered)

SKU: LEA-CS704 Category: Brand:


LEA Professional CS704 4-Channel 700W Power Amplifier with DSP, Ethernet, and IoT Integration

Introduction: The LEA Professional CS704 stands as a robust member of the Internet of Things (IoT) enabled amplifiers, showcasing cutting-edge technology in audio amplification. This 4-channel power amplifier delivers a hefty 700 watts per channel, adaptable for both HiZ (70V or 100V) and LoZ outputs, individually selectable per channel for enhanced flexibility.

Connectivity: Embracing modern networking, the CS704 offers three distinct connectivity options. Use the amplifier’s inbuilt WiFi access point for quick setup, connect seamlessly to an existing venue’s WiFi network, or opt for a reliable FAST Ethernet connection through Cat5 or Cat6 cables to integrate into any local area network.


  1. Intuitive Web Browser Interface: Operate from any device without the need for additional software, thanks to its web-based UI.
  2. Smart Power Bridge Technology: This proprietary feature allows users to bridge channels for doubled power output to a single channel without losing an amplifier channel.
  3. Versatile Output Options: Direct selection of LoZ and HiZ (70V or 100V) per channel for diverse setup configurations.
  4. Universal Power Compatibility: Equipped with a universal switch mode power supply with Power Factor Correction, operating across 100VAC to 240VAC +/- 15%.
  5. Advanced DSP: Featuring 96kHz Analog Devices DSP, the CS704 offers extensive control with input routing, various crossover filters, parametric EQs, user-configurable limiters, and real-time monitoring.
  6. Efficient Class D Amplification: High efficiency Class D output stage ensures minimal AC current draw and maximum performance.


  • Power Output: Robust 350W @ 2Ω, 700W @ 4Ω, 8Ω, 70V/100V per channel.
  • Input Sensitivity: User-selectable options between 26dB and 34dB.
  • Sound Quality: Maintains low THD+N at 0.1% across a wide frequency response of 20Hz to 20kHz, ensuring clarity and fidelity.
  • Signal Integrity: High 105dB signal to noise level and minimal crosstalk of 70dB.
  • Amplifier Classification: Class D with exclusive Smart Power Bridge Technology for efficient and flexible output.
  • User Controls: Extensive user interface through a web browser, comprehensive input matrix, output delay, and 8-band parametric EQ per channel.
  • Protection & Monitoring: Advanced protection circuits and real-time load monitoring ensure reliability and longevity.
  • Physical Dimensions: Sleek 14.25” x 19” x 1RU form factor, weighing 14 lbs. with a shipping weight of 18.7 lbs.
  • Cooling System: Front to rear variable fan speed with noise levels adjusted for operational intensity.

Conclusion: The LEA Professional CS704 is a testament to sophisticated design, merging power, flexibility, and intelligent features into a single unit. Whether it’s for large venues, studios, or intimate settings, the CS704’s blend of power, connectivity, and control makes it an essential tool for audio professionals seeking reliability and excellence in sound amplification.

Additional information

Weight 18 lbs
Dimensions 23 × 20 × 4 in