The LEA Professional CDS704 Cinema Digital Series Smart Amplifier is a four-channel professional amplifier designed for small- to medium-scale audio installations. Delivering 350 watts per channel at 2Ω and 700 watts per channel at 4Ω, 8Ω, 25V, and 70V/100V, it supports both low-impedance loudspeakers and high-impedance distributed audio systems. Each channel can be configured independently for low-impedance or 70V/100V operation, making it suitable for multi-zone audio and commercial sound reinforcement applications.

The CDS704 combines a highly efficient Class-D output stage with proprietary Smart Power Bridge technology and a 96kHz Analog Devices Sigma DSP processor featuring a 32-bit core and sample rate converters. Integrated processing includes flexible input routing, crossover filters up to 48dB per octave, eight-band parametric EQ per channel, adjustable speaker limiters, output delay, and real-time load monitoring. Built-in protection functions help protect the amplifier and connected loudspeakers during operation.

For networked audio installations, the CDS704 offers three connection options: its built-in Wi-Fi access point, an existing venue Wi-Fi network, or wired Ethernet through Cat5 or Cat6 cable. Browser-based WebUI, LEA Cloud, third-party API control, and SharkWare support system configuration and remote monitoring. Additional capabilities include balanced analog inputs, an 8 × 8 AES67 interface, and external I/O for remote on/off control and amplifier health monitoring.

Key Features

• Four-channel professional Class-D smart amplifier.
• 350W per channel at 2Ω and 700W at 4Ω, 8Ω, 25V, and 70V/100V.
• Independent Lo-Z and 70V/100V channel selection.
• Proprietary Smart Power Bridge technology.
• 96kHz Analog Devices Sigma DSP with a 32-bit core.
• Eight-band parametric EQ and crossover filters up to 48dB per octave.
• 8 × 8 AES67 audio networking at 48kHz or 96kHz.
• Built-in Wi-Fi access point, venue Wi-Fi, and wired Ethernet.
• WebUI, LEA Cloud, third-party API, and SharkWare control.
• External I/O for remote on/off and amplifier health monitoring.

Ideal For

• Cinema and commercial audio installations.
• Corporate offices and conference rooms.
• Educational facilities.
• Hospitality and retail environments.
• Houses of worship.
• Multi-zone distributed audio systems.
• Networked audio installations using AES67.

What's in the Box

• LEA Professional CDS704 4-Channel Cinema Digital Series Smart Amplifier.

Inputs & Outputs

• Balanced analog audio inputs with selectable 26dB or 34dB input sensitivity.
• 8 × 8 AES67 digital audio interface supporting 48kHz or 96kHz.
• AES67 multicast and unicast transmission, configurable through AES67 Controller software.
• Four amplifier channels supporting the published low-impedance and high-impedance power ratings.
• Network connectivity through built-in Wi-Fi access point, existing venue Wi-Fi, or wired Ethernet.
• External I/O input for remote on/off control.
• External I/O output for amplifier health indication.

Frequently Asked Questions

How many channels does the CDS704 have?

The CDS704 is a four-channel professional amplifier, with power ratings specified per channel.

What is the output power per channel?

It delivers 350W per channel at 2Ω and 700W per channel at 4Ω, 8Ω, 25V, and 70V/100V, according to the supplied power table.

Does the CDS704 support 70V and 100V loudspeaker systems?

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

Does the CDS704 support AES67?

Yes. Its 8 × 8 AES67 interface supports 48kHz and 96kHz, with multicast or unicast transmission configurable through AES67 Controller software.

Can the CDS704 be controlled remotely?

Yes. It supports browser-based WebUI, LEA Cloud, third-party API control, and SharkWare for configuration and monitoring.

What DSP functions are included?

The CDS704 includes input routing with primary and secondary input priority, crossover filters up to 48dB per octave, eight-band parametric EQ per channel, 100ms output delay per channel, adjustable peak and RMS voltage limiting, and real-time load monitoring.

Full Technical Specifications

Amplifier and Audio Specifications

Model	CDS354
Product Series	Cinema Digital Series
Amplifier Channels	4
Power per Channel at 2Ω	350 Watts
Power per Channel at 4Ω, 8Ω, 25V, and 70V/100V	350 Watts
Amplifier Class	Class D
Output Technology	Proprietary Smart Power Bridge
Output Modes	Lo-Z, 70V, or 100V, selectable per channel
THD+N	0.1% (20Hz–20kHz)
Frequency Response	20Hz–20kHz, ±0.5dB at 4Ω, 8Ω, 70V, and 100V; -2.5dB at 20kHz at 2Ω
Signal-to-Noise Ratio	105dB (20Hz–20kHz, referenced to 8Ω)
Crosstalk	70dB (20Hz–20kHz)
Analog Inputs	Balanced analog inputs
Analog Input Sensitivity	Selectable 26dB or 34dB
AES67 Interface	8 × 8
AES67 Sample Rates	48kHz or 96kHz
AES67 Transmission	Multicast or unicast

DSP & Signal Processing

DSP Architecture	Analog Devices Sigma DSP
DSP Sample Rate	96kHz
DSP Core	32-bit with sample rate converters
Input Matrix	Routable matrix; any input to any output
Input Priority	Primary and secondary input priority
Crossover Filters	IIR filters up to 48dB/octave
Crossover Types	Linkwitz-Riley and Butterworth
Parametric EQ	8 bands per channel
Output Delay	100ms per channel
User-Adjustable Limiting	Peak voltage and RMS voltage
Load Monitoring	Real-time load monitoring and pilot tone detection from internal or external sources

Network & Control

User Interface	Browser-based WebUI
Control Options	WebUI, third-party API, LEA Cloud, and SharkWare
Network Connectivity	Built-in Wi-Fi access point, existing Wi-Fi network, or wired LAN
Wired Network Connection	Cat5 or Cat6 Ethernet
Cloud Control	Remote control, monitoring, and notifications without requiring a VPN
External I/O Input	Remote on/off control
External I/O Output	Amplifier health indication
AES67 Configuration	AES67 Controller software

Power & Electrical Requirements

AC Mains	100–240VAC ±15%
Mains Frequency	50Hz or 60Hz
Power Supply	Universal switch-mode power supply
Power Factor Correction	Yes
Output Stage	High-efficiency Class D

Connectivity & Protection Features

Output Protection	DC, VHF, and AC mains protection
Thermal Protection	Overtemperature protection
Current Protection	Current limiter
Fan Monitoring	Fan fault detection
Speaker Limiting	User-adjustable peak and RMS voltage limits
Load Monitoring	Real-time load monitoring and pilot tone detection
Cooling	Front-to-rear airflow with variable-speed fan
Fan Noise at Idle	50dB at 1m
Fan Noise at 50% Speed	57dB at 1m
Fan Noise at Full Speed	63dB at 1m

Physical Specifications

Rack Format	1U
Product Dimensions (L × W × H)	14.25 × 19 × 1.75 inches
Product Weight	14 lbs
Shipping Dimensions (L × W × H)	20 × 22.75 × 3.75 inches
Shipping Weight	18.7 lbs