The LEA Professional CS704D Connect Series is a four-channel Class-D power amplifier designed for professional audio installations in small- to medium-sized venues. Delivering up to 700W per channel at supported loads, it supports 2, 4, and 8-ohm speakers as well as 25V, 70V, and 100V distributed audio systems. Its rackmount design makes it suitable for commercial AV environments that require reliable amplification and flexible system integration.

Featuring built-in Wi-Fi, a 100 Mbps Ethernet connection, and primary and secondary Dante ports, the CS704D provides multiple options for audio networking, remote configuration, and system control. Its integrated DSP operates at 32-bit/96 kHz and includes crossover processing, an 8-band parametric EQ, and limiter functionality. Smart Power Bridge technology dynamically redistributes power between channels when needed to accommodate changing system requirements.

The CS704D includes balanced analog line inputs, speaker outputs, and a remote I/O connection for compatible control applications. A backlit LCD provides convenient access to amplifier information, while the built-in cooling fan and removable, washable front air-intake filters support ongoing operation. Supplied input and output connectors and an IEC power cable help simplify installation in professional sound reinforcement and distributed audio systems.

Key Features

• Four-channel Class-D amplifier with 2800W total rated output.
• Delivers up to 700W per channel at supported loads.
• Supports 2, 4, and 8-ohm speakers and 25V, 70V, and 100V systems.
• Built-in DSP with 32-bit/96 kHz processing.
• Ethernet, dual Dante ports, and integrated Wi-Fi connectivity.
• Smart Power Bridge technology for dynamic power allocation.

Ideal For

• Commercial AV installations.
• Restaurants, hotels, and hospitality venues.
• Corporate offices and conference rooms.
• Distributed 70V/100V audio systems.
• Dante-enabled networked audio installations.
• Professional sound reinforcement systems.

What’s in the Box

• LEA Professional CS704D Connect Series 4-Channel Amplifier.
• 5 × 3-position Amphenol Anytek input connectors.
• 4 × 2-position Amphenol Anytek output connectors.
• 2 × removable foam filters.
• IEC power cable.

Inputs & Outputs

• Analog Inputs: 4 × balanced 3-pin block terminal line inputs.
• Speaker Outputs: 4 × 2-pin block terminal outputs.
• Ethernet: 1 × RJ45, 100 Mbps.
• Dante: 2 × RJ45 ports (primary and secondary).
• Remote I/O: 1 × 8-pin block terminal.
• Wireless: Built-in Wi-Fi.

Frequently Asked Questions

How many channels does the LEA Professional CS704D provide?

The CS704D is a four-channel power amplifier designed to drive four independent amplifier channels.

What speaker loads does the CS704D support?

It supports low-impedance loads of 2, 4, and 8 ohms, along with 25V, 70V, and 100V constant-voltage speaker systems, subject to the amplifier's specified power ratings.

Does the CS704D support Dante audio?

Yes. It includes primary and secondary RJ45 Dante network connections for integration into compatible Dante audio systems.

Does the amplifier include DSP?

Yes. Its onboard 32-bit/96 kHz DSP includes crossover processing, an 8-band parametric EQ, and limiter functionality.

Can the amplifier be controlled over Wi-Fi?

Yes. The built-in Wi-Fi supports access-point and local Wi-Fi operation for network connection and compatible control functions.

Full Technical Specifications

Amplifier Specifications

Amplifier Type	Class-D
Number of Channels	4
Total Rated Power	2800W
Power at 2 Ohms	4 × 350W RMS
Power at 4/8 Ohms	4 × 700W RMS
Power at 25V	4 × 330W RMS
Power at 70/100V	4 × 700W RMS
Supported Impedance	2, 4, and 8 Ohms
Constant-Voltage Outputs	25V, 70V, and 100V

Audio Performance & DSP

Frequency Response	20 Hz–20 kHz (±0.5 dB)
Signal-to-Noise Ratio	105 dB
THD+N	≤ 0.1%
Crosstalk	70 dB
DSP Processing	32-bit Delta-Sigma at 96 kHz
Equalization	8-band parametric EQ
Filters	Crossover
Dynamics Processing	Limiter

Connectivity

Analog Inputs	4 × balanced 3-pin block terminal
Speaker Outputs	4 × 2-pin block terminal
Ethernet	1 × RJ45, 100 Mbps
Dante	2 × RJ45 ports
Remote I/O	1 × 8-pin block terminal
Wi-Fi	Built-in
Mobile Compatibility	Android and iOS

Power & Cooling

AC Input	100–240 VAC, 50/60 Hz
AC Connector	IEC 15A / NEMA 5-15
Cooling	1 × fan
Display	Backlit LCD

Physical Specifications

Mounting Size	1U rackmount
Product Dimensions (L × W × H)	19 × 14.3 × 1.8 inches
Product Weight	14 lbs
Shipping Dimensions (L × W × H)	22.7 × 19.8 × 3.5 inches
Shipping Weight	19.44 lbs
Operating Temperature	32–131°F (0–55°C)