The LEA Professional CS3004 Connect Series High-Power Smart Amplifier is a four-channel professional amplifier designed for large-scale commercial audio installations. Delivering up to 3,000 watts per channel at 2Ω, 4Ω, 8Ω, 25V, and 70V/100V, it supports low-impedance loudspeakers and selectable high-impedance distributed audio systems. Its high-power output and flexible channel configuration make it suitable for demanding installations requiring powerful, multi-zone audio distribution.

Built around a highly efficient Class-D output stage and Analog Devices 96kHz DSP, the CS3004 provides advanced audio processing and system protection. Features include linear-phase FIR crossover filters, IIR crossovers up to 48dB per octave, eight-band parametric EQ per channel, up to four seconds of output delay, adjustable voltage limiting, and real-time load monitoring. Smart Power Bridge technology enables bridged output functionality on two channels without sacrificing another amplifier channel.

The CS3004 offers browser-based WebUI access, third-party API control, and LEA Cloud connectivity for remote configuration, monitoring, and notifications. Its four balanced analog inputs can be routed through the input matrix, while external I/O supports remote on/off control and amplifier health monitoring. The Network Connect model supports three connection methods: built-in Wi-Fi access point, an existing Wi-Fi network, or wired LAN. The CS3004D Dante Connect version additionally supports Dante and AES67 audio networking.

Key Features

• Four-channel high-power Class-D smart amplifier.
• 3,000W per channel at 2Ω, 4Ω, 8Ω, 25V, and 70V/100V.
• Selectable low-impedance and 70V/100V operation per channel.
• 96kHz Analog Devices SHARC DSP with linear-phase FIR crossovers.
• Eight-band parametric EQ and up to four seconds of output delay per channel.
• WebUI, LEA Cloud, and third-party API control.
• Three network connection methods on the Network Connect model.
• Smart Power Bridge technology for bridged output functionality on two channels.

Ideal For

• Large commercial audio installations.
• Auditoriums and performance venues.
• Corporate conference facilities.
• Educational institutions.
• Houses of worship.
• Hospitality and entertainment venues.
• High-power multi-zone distributed audio systems.

What's in the Box

• LEA Professional CS3004 Connect Series 4-Channel Smart Amplifier.

Inputs & Outputs

• 4 balanced analog audio inputs with selectable 26dB or 34dB input sensitivity.
• Amplifier outputs supporting 2Ω, 4Ω, 8Ω, 25V, and 70V/100V operation according to the specified power ratings.
• Network connectivity through built-in Wi-Fi access point, existing Wi-Fi network, or wired LAN.
• External I/O input for remote on/off control.
• External I/O output for amplifier health indication.
• CS3004D version supports Dante and AES67 audio networking.

Frequently Asked Questions

How many channels does the CS3004 provide?

The CS3004 is a four-channel amplifier, with power ratings specified per channel.

What is the output power per channel?

It delivers 3,000W per channel at 2Ω, 4Ω, 8Ω, 25V, and 70V/100V, according to the published specifications.

Does the CS3004 support 70V and 100V systems?

Yes. Each channel supports selectable low-impedance or 70V/100V high-impedance operation.

Does the CS3004 support Wi-Fi?

Yes. The Network Connect model supports a built-in Wi-Fi access point, an existing Wi-Fi network, and wired LAN connectivity.

What is the difference between the CS3004 and CS3004D?

The CS3004 is the Network Connect version, while the CS3004D is the Dante Connect version, which adds Dante and AES67 audio networking.

Can the amplifier be controlled remotely?

Yes. It supports browser-based WebUI control, third-party API integration, and LEA Cloud remote control and monitoring.

Full Technical Specifications

Amplifier and Audio Specifications

Model	CONNECT 3004 / 3004D
Amplifier Channels	4 Channels
Power per Channel at 2Ω, 4Ω, 8Ω, 25V, 70V/100V	3,000 Watts
Amplifier Class	Class D
Smart Power Bridge	Yes
Bridged Output	Supports Bridging on 2 Channels
Output Modes	Lo-Z, 70V, 100V
Channel Configuration	Selectable per Channel
THD+N	0.1% (20Hz–20kHz)
Frequency Response	20Hz–20kHz, ±0.5dB at 4Ω, 8Ω, 70V, and 100V
Frequency Response at 2Ω	-2.5dB at 20kHz
Signal-to-Noise Ratio	105dB (referenced to 8Ω)
Crosstalk	70dB (20Hz–20kHz)
Analog Inputs	4 Balanced Inputs
Input Sensitivity	Selectable 26dB / 34dB

Network & Control

User Interface	Browser-Based WebUI
Cloud Connectivity	LEA Cloud
Third-Party Control	API Control
Network Connect Methods	Built-In Wi-Fi Access Point, Existing Wi-Fi Network, Wired LAN
Wi-Fi Support	Yes
Dante Support	CS3004D Version
AES67 Support	CS3004D Version
Remote Monitoring	Yes
VPN Requirement for Cloud Access	Not Required
External I/O Input	Remote On/Off
External I/O Output	Amplifier Health Status

Power & Electrical Requirements

AC Mains	100–240VAC ±15%
Operating Frequency	50Hz / 60Hz
Power Supply	Universal Switch-Mode
Power Factor Correction	Yes
Output Stage	High-Efficiency Class D
Cooling System	Variable-Speed Fan
Cooling Direction	Front to Rear

Connectivity & Protection Features

Analog Connectivity	4 Balanced Inputs
Network Connectivity	Wi-Fi and Wired LAN
Dante and AES67	Supported on CS3004D
External Control	Remote On/Off
Fault Monitoring	Amplifier Health Indication
Load Protection	DC and VHF Protection
AC Mains Protection	Supported
Thermal Protection	Overtemperature Protection
Current Protection	Current Limiter
Fan Monitoring	Fan Fault Detection
Load Monitoring	Internal or External Pilot Tone Detection
Network Management	WebUI, LEA Cloud, and Third-Party API
Remote Access	Cloud-Based Control and Monitoring

Physical Specifications

Product Dimensions (L × W × H)	17.88 × 19 × 3.5 inches
Product Weight	26 lbs
Shipping Dimensions (L × W × H)	22 × 22.75 × 8 inches
Shipping Weight	30 lbs
Rack Format	2U
Fan Noise at Idle	50dB at 1m
Fan Noise at 50% Speed	57dB at 1m
Fan Noise at Full Speed	63dB at 1m