Crown Audio CTD-4125 4-Channel 125-Watts per Channel Power Amplifier - 1/2-Rack

Flexible Installed Amplification – The Crown CTD-4125 4-Channel Power Sharing Amplifier

The Crown CTD-4125 is a four-channel, 125-watt-per-channel power sharing amplifier designed for versatile installed audio applications. With Dante inputs and outputs, built-in DSP, Lo-Z/Hi-Z switching, flexible power sharing, and an intuitive web-based configuration interface, the CTD-4125 delivers reliable Crown amplification in a compact format that adapts easily to changing system requirements.

• 4-channel amplifier delivering 125 W per channel with all channels driven
• Asymmetrical power sharing allows the four channels to share up to 500 W in any ratio
• Dante inputs and outputs for networked audio integration
• Built-in DSP for room tuning and speaker tuning
• Lo-Z/Hi-Z switchable outputs
• WebUI configuration from a computer or tablet without proprietary software
• Factory JBL SpeakerTunings for select JBL loudspeakers
• Pilot Tone and Load Monitoring
• Source Priority Switching
• GPIO interface
• HControl protocol support for compatible BSS and AMX systems
• Compact 1 RU, half-rack-width design
• Includes mounting hardware for rack, under-table, or wall installation

Flexible Power Sharing

The CTD-4125 delivers 125 watts per channel when all four channels are driven equally. For installations that require different power levels between zones or loudspeakers, asymmetrical power sharing allows the four channels to share the full 500 watts in any ratio, providing additional flexibility from a single compact amplifier.

Built-In DSP and Speaker Tuning

Integrated DSP allows outputs to be tuned specifically for each installation and provides the ability to create custom speaker tunings. Factory JBL SpeakerTunings for select JBL models, including Control 400 Series ceiling speakers, are included to simplify optimization in compatible HARMAN systems.

Dante Network Audio

Built-in Dante inputs and outputs provide flexible networked audio connectivity for modern installed sound systems. This allows the CTD-4125 to integrate into Dante-enabled environments while supporting the needs of commercial, corporate, hospitality, education, and other installed audio applications.

Web-Based Configuration

The amplifier can be configured through an intuitive web interface using a compatible computer or tablet without the need to install proprietary software. This simplifies initial setup, monitoring, and ongoing system adjustments.

System Integration

The CTD-4125 uses HARMAN's HControl protocol to communicate natively with compatible BSS OMNI Processors and AMX MUSE Automation Controllers. An easy-to-use API is also available for integration with third-party control systems.

Compact Installation Options

The compact 1 RU, half-rack-width design can be installed in a rack, mounted under a table, or attached to a wall using the included mounting hardware, making the CTD-4125 suitable for installations where space is limited.

SPECIFICATIONS

Amplifier

• Channels: 4
• Output Power, All Channels Driven: 125 W per channel
• Low-Z Output Power: 125 W per channel with all channels driven
• Hi-Z Output Power: 125 W per channel with all channels driven
• Maximum Shared Output Power: 500 W total
• Maximum Single-Channel Output with Power Sharing: 500 W

Processing and Control

• Built-In DSP: Yes
• Room Tuning: Yes
• Speaker Tuning: Yes
• Factory JBL SpeakerTunings: Yes
• Pilot Tone and Load Monitoring: Yes
• Source Priority Switching: Yes
• GPIO Interface: Yes
• HControl: Yes
• WebUI Configuration: Yes

Network Audio

• Dante Inputs: Yes
• Dante Outputs: Yes

Output Configuration

• Lo-Z/Hi-Z Switchable Outputs: Yes
• Power Sharing: Yes

Physical

• Rack Height: 1 RU
• Chassis Width: Half-rack
• Mounting Options: Rack, under table, or wall
• Mounting Hardware: Included

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Since 1958, Chuck Levin’s Musictoner has been the trusted destination for musicians and audio professionals across Maryland, Virginia, and Washington, D.C. Family-owned and operated, our legendary music store delivers Everything in Music®—from instruments and recording gear to pro audio, rentals, and repair services.

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