The LEA Professional CS704D-ADSP Dante Connect Series Smart Amplifier is a four-channel Class-D amplifier designed for professional audio installations that require powerful amplification, advanced processing, and network connectivity. It delivers 350 watts per channel at 2Ω and 700 watts per channel at 4Ω and 8Ω, as well as 25V, 70V, and 100V operation. Its efficient output stage and proprietary Smart Power Bridge technology provide flexible loudspeaker configuration options for demanding commercial and professional environments.

The amplifier features a 96kHz Analog Devices SHARC DSP processor with a 32-bit core and sample rate converters. Its processing tools include 2048-tap linear-phase FIR filters per channel, IIR crossover filters up to 48dB per octave, eight-band parametric EQ per channel, and up to four seconds of output delay. User-adjustable peak and RMS voltage limiters, flexible input routing, and real-time load monitoring help optimize loudspeaker performance while supporting reliable system operation.

Designed for networked AV environments, the CS704D-ADSP combines four balanced analog inputs with 8 × 8 Dante audio networking at 48kHz or 96kHz and configurable AES67 compatibility. LEA Cloud provides remote control, monitoring, and notifications without requiring a VPN, while the browser-based WebUI, third-party API, and SharkWare offer additional management options. Built-in Wi-Fi, LAN connectivity, and external I/O for remote on/off control and amplifier health monitoring support integration into modern professional audio systems.

Key Features

• Four-channel Class-D amplification with 700W per channel.
• 8 × 8 Dante audio networking with AES67 compatibility.
• 96kHz DSP with 2048-tap linear-phase FIR filters per channel.
• Eight-band parametric EQ and up to 4 seconds of output delay.
• LEA Cloud remote control, monitoring, and notifications.
• Built-in Wi-Fi, LAN connectivity, and external I/O control.

Ideal For

• Commercial and corporate audio installations.
• Conference rooms and meeting facilities.
• Educational institutions and lecture halls.
• Houses of worship and hospitality venues.
• Dante-enabled networked audio systems.
• Distributed 70V and 100V loudspeaker installations.
• Professional AV systems requiring high-power, multi-channel amplification.

What's in the Box

• LEA Professional CS704D-ADSP Smart Amplifier.

Inputs & Outputs

• 4 balanced analog inputs with selectable 26dB or 34dB input sensitivity.
• 8 × 8 Dante audio networking at 48kHz or 96kHz, supporting multicast and unicast.
• AES67 compatibility configurable through Dante Controller software.
• 4 amplifier output channels supporting low-impedance and selectable 70V or 100V operation.
• External I/O input for remote on/off control.
• External I/O output for amplifier health indication.
• Network connectivity through built-in Wi-Fi access point, existing Wi-Fi, or LAN.
• Browser-based WebUI, LEA Cloud, third-party API, and SharkWare control compatibility.

Frequently Asked Questions

How many channels does the LEA Professional CS704D-ADSP have?

The CS704D-ADSP is a four-channel Class-D amplifier rated at 700 watts per channel at 4Ω and 8Ω, as well as 25V, 70V, and 100V operation. It delivers 350 watts per channel at 2Ω.

Does the CS704D-ADSP support Dante and AES67?

Yes. It provides 8 × 8 Dante audio networking at 48kHz or 96kHz, with multicast and unicast support. AES67 compatibility is configurable through Dante Controller software.

What DSP processing features are included?

The amplifier features 96kHz DSP, 2048-tap FIR filters per channel, IIR crossovers up to 48dB per octave, eight-band parametric EQ per channel, up to four seconds of output delay, adjustable voltage limiters, and real-time load monitoring.

Can the amplifier be controlled remotely?

Yes. LEA Cloud supports remote control, monitoring, and notifications without requiring a VPN. Additional control options include browser-based WebUI, third-party API, and SharkWare.

Does it support distributed audio systems?

Yes. The CS704D-ADSP supports selectable 70V and 100V operation per channel, making it suitable for distributed loudspeaker systems as well as low-impedance installations.

What connectivity options are available?

The amplifier provides four balanced analog inputs, Dante networking, configurable AES67 compatibility, built-in Wi-Fi, LAN connectivity, and external I/O for remote on/off control and amplifier health monitoring

Full Technical Specifications

Amplifier and Audio Specifications

Amplifier Type	Professional Class-D Smart Amplifier
Number of Channels	4
Output Power at 2Ω	350W per channel
Output Power at 4Ω	700W per channel
Output Power at 8Ω	700W per channel
Output Power at 25V	700W per channel
Output Power at 70V / 100V	700W per channel
Amplifier Technology	Proprietary Smart Power Bridge
Bridged Output	Supports bridging on one channel without sacrificing another amplifier channel
Analog Inputs	4 balanced inputs
Input Sensitivity	Selectable 26dB or 34dB
THD+N	0.1% from 20Hz to 20kHz
Frequency Response	±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 from 20Hz to 20kHz
Input Routing	Routable matrix with primary and secondary input priority

DSP and Processing

DSP Architecture	Analog Devices SHARC processor with 32-bit core and sample rate converters
DSP Sample Rate	96kHz
FIR Filters	2048 taps per channel at 96kHz
FIR Crossover Options	24dB/octave and 48dB/octave Linkwitz-Riley, linear-phase Brickwall, and custom FIR coefficient loading
IIR Crossover Filters	Up to 48dB/octave
IIR Filter Types	Linkwitz-Riley, Butterworth, and Bessel
Parametric EQ	8-band per channel
Output Delay	Up to 4 seconds per channel
User-Adjustable Limiting	Peak-voltage and RMS-voltage limiters
Load Monitoring	Real-time load monitoring and pilot-tone detection from internal or external sources

Dante and Network Audio

Dante Audio	8 × 8 channels
Dante Sample Rates	48kHz or 96kHz
Dante Transmission	Multicast and unicast
AES67 Support	Configurable through Dante Controller
Network Connections	Built-in Wi-Fi access point, existing Wi-Fi network, or LAN
Network Audio Integration	Designed for compatible Dante-enabled systems

Control and Monitoring

User Interface	Browser-based WebUI
Cloud Control	LEA Cloud remote control, monitoring, and notifications without a VPN
Additional Control	Third-party API and SharkWare
External I/O Input	Toggles remote on/off
External I/O Output	Indicates amplifier health
Loudspeaker Operation	Low-impedance and selectable 70V/100V operation per channel

Protection, Cooling, and Power

Output Protection	DC, VHF, AC mains, over-temperature, current limiting, and fan-fault detection
Cooling System	Front-to-rear variable-speed fan cooling
Fan Noise at Idle	50dB at 1m
Fan Noise at 50%	57dB at 1m
Fan Noise at Full Speed	63dB at 1m
AC Mains Voltage	100–240VAC ±15%
AC Mains Frequency	50Hz or 60Hz
Power Supply	Universal switch-mode power supply with power factor correction
Output Stage	High-efficiency Class D

Physical Specifications

Product Dimensions (L × W × H)	14.25 × 19 × 1.75 inches
Product Weight	10 lbs
Shipping Dimensions (L × W × H)	20 × 22.75 × 3.75 inches
Shipping Weight	17.4 lbs