The LEA Professional CS1504-G Connect Series High-Power Smart Amplifier is a four-channel professional amplifier designed for demanding commercial audio installations. Delivering up to 1,500 watts per channel at 2Ω, 4Ω, 8Ω, 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 installations requiring powerful, multi-zone audio distribution.

Built around a highly efficient Class-D output stage and Analog Devices 96kHz DSP, the CS1504-G 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 also enables bridged output functionality without sacrificing another amplifier channel.

The CS1504-G 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. This G-model uses a wired LAN connection and does not support Wi-Fi.

Key Features

• Four-channel high-power Class-D smart amplifier.
• 1,500W per channel at 2Ω, 4Ω, 8Ω, and 70V/100V.
• Selectable low-impedance and 70V/100V operation per channel.
• 96kHz Analog Devices DSP with linear-phase FIR crossovers and 8-band parametric EQ per channel.
• Up to 4 seconds of output delay per channel.
• Browser-based WebUI, third-party API, and LEA Cloud control.
• Wired LAN connectivity with external I/O for remote control and fault monitoring.

Ideal For

• Large commercial audio installations.
• Corporate offices and conference facilities.
• Educational institutions and auditoriums.
• Hospitality and retail environments.
• Houses of worship and performance venues.
• High-power multi-zone 70V/100V and low-impedance audio systems.

What's in the Box

• LEA Professional CS1504-G 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.
• Wired LAN connection for WebUI and LEA Cloud connectivity.
• 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 CS1504-G provide?

The CS1504-G is a four-channel amplifier, with power ratings specified per channel.

What is the output power per channel?

It delivers 1,500W per channel at 2Ω, 4Ω, 8Ω, and 70V/100V. The specified output at 25V is 600W per channel.

Does the CS1504-G support 70V and 100V systems?

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

Does this amplifier support Wi-Fi?

No. The CS1504-G is designed for wired LAN connections and does not support Wi-Fi connectivity.

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 1504-G
Amplifier Channels	4 Channels
Power per Channel at 2Ω	1,500 Watts
Power per Channel at 4Ω	1,500 Watts
Power per Channel at 8Ω	1,500 Watts
Power per Channel at 25V	600 Watts
Power per Channel at 70V/100V	1,500 Watts
Amplifier Class	Class D
Smart Power Bridge	Yes
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

DSP & Signal Processing

DSP Processor	Analog Devices Sigma
DSP Sample Rate	96kHz
DSP Core	32-bit
Sample Rate Conversion	Supported
Input Matrix	Routable Input-to-Output Matrix
Input Priority	Primary and Secondary
Crossover Filters	Linear-Phase FIR and IIR up to 48dB/Octave
Crossover Types	Linkwitz-Riley and Butterworth
Parametric EQ	8 Bands per Channel
Output Delay	Up to 4 Seconds per Channel
User-Adjustable Limiting	Peak Voltage and RMS Voltage
Output Protection	DC, VHF, AC Mains, Overtemperature, and Current Limiter
Load Monitoring	Real-Time Monitoring and Pilot Tone Detection

Network & Control

User Interface	Browser-Based WebUI
Cloud Connectivity	LEA Cloud
Third-Party Control	API Control
Network Connection	Wired LAN
Wi-Fi Support	Not Supported
Remote Monitoring	Yes
Remote Control	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
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)	22.8 x 22.2 x 8.1 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