The LEA Professional CS354D Dante Connect Series is a four-channel professional smart amplifier designed for small to medium-sized commercial audio installations. It delivers 350 watts per channel at 4Ω, 8Ω, 25V, 70V, and 100V, with 175 watts per channel at 2Ω. Each channel can be independently configured for low-impedance, 70V, or 100V operation, providing flexibility for distributed loudspeaker systems and multi-zone installations.

The CS354D combines four balanced analog inputs with an 8 × 8 Dante interface supporting 96kHz or 48kHz operation, including multicast and unicast. Its 96kHz Analog Devices Sigma DSP processor provides a routable input matrix with primary and secondary input priority, eight-band parametric EQ per channel, crossover filters up to 48dB per octave, and 100ms of output delay per channel. Smart Power Bridge Technology enables bridged output functionality without sacrificing an amplifier channel, while integrated protection, adjustable limiting, and real-time load monitoring support loudspeaker system management.

For installation and remote operation, the CS354D offers three network connection options: a built-in Wi-Fi access point, an existing Wi-Fi network, or wired Ethernet. The browser-based WebUI, LEA Cloud, and third-party API support allow installers to configure and monitor the amplifier from compatible devices. External I/O provides remote on/off control and amplifier-health indication. Its Class D output stage and universal switch-mode power supply with power factor correction make the CS354D a flexible solution for professional installed audio systems.

Key Features

• Four-channel professional amplifier delivering 350W per channel at 4Ω, 8Ω, 25V, 70V, and 100V.
• Output rating of 175W per channel at 2Ω.
• Independent low-impedance, 70V, or 100V selection for each channel.
• Class D amplification with proprietary Smart Power Bridge Technology.
• Browser-based WebUI, LEA Cloud, and third-party API control.
• Built-in Wi-Fi access point, existing Wi-Fi network, and wired Ethernet connectivity.
• Universal 100–240V AC power supply with power factor correction.

Ideal For

• Small to medium-sized commercial audio installations.
• Multi-zone sound systems requiring four amplifier channels.
• Distributed loudspeaker systems using 70V or 100V lines.
• Low-impedance loudspeaker systems operating at supported impedances.
• Dante-enabled installations requiring networked digital audio distribution.
• Corporate offices, educational facilities, hospitality venues, and houses of worship.
• Installed sound systems requiring remote control, DSP configuration, and loudspeaker protection.

What's in the Box

• Box contents are not specified in the supplied manufacturer information.

Inputs & Outputs

• Four balanced analog inputs with selectable 26dB and 34dB input sensitivity.
• 8 × 8 Dante digital audio interface supporting 96kHz or 48kHz.
• AES67 support configurable through Dante Controller software.
• Four amplifier output channels with selectable low-impedance, 70V, or 100V operation.
• Ethernet network connectivity.
• Built-in Wi-Fi access point.
• External I/O input for remote on/off control.
• External I/O output for amplifier-health indication.
• AC power connection.

Frequently Asked Questions

How much power does the CS354D deliver?

The CS354D delivers 350W per channel at 4Ω, 8Ω, 25V, 70V, and 100V, and 175W per channel at 2Ω.

Can each amplifier channel use a different loudspeaker configuration?

Yes. Each channel can be configured independently for low-impedance, 70V, or 100V operation.

Does the CS354D support Dante and AES67?

Yes. It supports 8 × 8 Dante networking at 96kHz or 48kHz, with multicast and unicast options. AES67 can be configured through Dante Controller software.

What DSP features are included?

The integrated DSP provides a routable input matrix, crossover filters, eight-band parametric EQ per channel, 100ms of output delay per channel, adjustable peak and RMS voltage limiting, output protection, and real-time load monitoring with pilot tone detection.

How can the CS354D be controlled remotely?

The amplifier supports browser-based WebUI control, LEA Cloud, and third-party APIs. Network access is available through its built-in Wi-Fi access point, an existing Wi-Fi network, or wired Ethernet.

What is Smart Power Bridge Technology?

Smart Power Bridge Technology enables bridged output functionality without sacrificing an amplifier channel.

What power supply does the CS354D use?

It uses a universal switch-mode power supply with power factor correction and operates at 100–240V AC, ±15%, at 50Hz or 60Hz.

Full Technical Specifications

Audio

Model	CS354D
Amplifier Channels	4
Output at 2Ω	175W per channel
Output at 4Ω, 8Ω, 25V, 70V/100V	350W per channel
Amplifier Output Classification	Class D with proprietary Smart Power Bridge Technology
Analog Inputs	4 balanced inputs
Analog Input Sensitivity	Selectable 26dB and 34dB
Dante	8 × 8 at 96kHz or 48kHz; multicast or unicast
AES67	Configurable through Dante Controller software
THD+N	0.1% from 20Hz to 20kHz
Frequency Response	20Hz–20kHz, ±0.5dB at 4Ω, 8Ω, 70V, and 100V; −2.5dB at 20kHz at 2Ω
Signal-to-Noise Level	105dB from 20Hz to 20kHz, referenced to 8Ω
Crosstalk	70dB from 20Hz to 20kHz

DSP

DSP Architecture	Analog Devices Sigma 96kHz DSP processor with 32-bit core and sample rate converters
Input Matrix	Routable matrix with primary and secondary input priority
Crossovers	IIR filters up to 48dB per octave; Linkwitz-Riley and Butterworth
Parametric EQ	Eight-band per channel
Output Delay	100ms per channel
Output Protection	DC, VHF, AC mains, overtemperature, current limiter, and fan-fault detection
User-Adjustable Limiting	Peak voltage and RMS voltage
Load Monitoring	Real-time load monitoring and pilot tone detection from internal or external sources

Control, Monitoring & Networking

User Interface	Browser-based WebUI, third-party API control, or LEA Cloud
Network Connection Options	Built-in Wi-Fi access point, existing Wi-Fi network, or wired Ethernet
External I/O Input	Toggles remote on/off
External I/O Output	Indicates amplifier health
AC Mains	100–240V AC, ±15%, 50Hz or 60Hz
Power Supply	Universal switch-mode power supply with power factor correction
Amplifier Output Stage	Class D

Physical Specifications

Product Dimensions	14.25 × 19 × 1.75 in
Shipping Dimensions	20 × 22.75 × 3.75 in
Product Weight	12.25 lbs
Shipping Weight	16.55 lbs
Cooling	Front-to-rear variable-speed fan cooling
Fan Noise at Idle	50dB at 1m
Fan Noise at 50% Speed	57dB at 1m