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 Manufacturer: Crown Audio Model: CRN-CTD-4125-US SKU: I873040-N-2-WHXE UPC: 691991044359 We are Chuck Levin's Washington Music Center Since 1958, Chuck Levin’s Washington Music Center 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. Our team of musicians and industry experts lives and breathes gear, helping you build the perfect setup for your next performance, studio session, or installation. As an authorized dealer for top brands, we also offer our award-winning CHUCKSCLUSIVE line—exclusive, limited-edition instruments and collaborations recognized with the NAMM Top 100 Dealer Innovation Award for redefining what a music retail experience can be. Chuck Levin’s isn’t just a store—it’s a community built by players, engineers, and creators who share a lifelong passion for sound. Stop by our legendary Wheaton, MD showroom or contact us anytime for expert advice, product questions, or the best possible deal on your next piece of gear.