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Product Details


The Bowers & Wilkins CDA-4HD 4-Channel 125W DSP Amplifier is a high-performance, compact distribution amplifier designed for powering B&W custom installation loudspeakers. Featuring 4 channels of 125W Class-D amplification, advanced Digital Signal Processing (DSP), and a 1U full-rack width design, the CDA-4HD is ideal for both new and upgraded installations. Easily manage the amp over your local network, and experience flexible, powerful sound—perfectly tuned for Bowers & Wilkins systems and subwoofers.

Key Features

  • 4-Channel Power: Delivers 125W per channel at 4 ohms, suitable for a wide range of custom speaker setups.
  • Bridgeable Flexibility: Bridge to 2 or 2.1 channels for up to 250W at 8 ohms per channel.
  • Integrated DSP: Digital Signal Processing enables precise optimization for B&W speakers and dynamic EQ for subwoofers.
  • Compact 1U Design: Full-rack width and only 1U high, perfect for professional AV racks and space-limited installs.
  • Network Control: Ethernet port for easy management, configuration, and monitoring over your local network.
  • Automatic Shutoff: 15-minute auto shutoff saves power when the amplifier is not in use.
  • Versatile Inputs: Accepts both analog and digital RCA connections for maximum integration flexibility.
  • Professional Build: Reliable, fanless design built for demanding custom and commercial installations.

Perfect For

  • Custom Installers & Integrators: A go-to amp for B&W in-wall, in-ceiling, and architectural loudspeaker systems.
  • Home Theater Upgrades: Expand your audio zones with easy network management and DSP-tuned power.
  • High-End Commercial Spaces: Reliable, rack-mountable solution for restaurants, offices, and retail.
  • B&W Subwoofer Integration: Dynamic EQ ensures deep, controlled bass with compatible subwoofers.

What’s In The Box

  • Bowers & Wilkins CDA-4HD 4-Channel 125W DSP Amplifier
  • Limited 2-Year Manufacturer Warranty

Technical Specifications

Channels 4.0 (Bridgeable to 2.1 or 2.0)
Power Output 4x 125W @ 4Ω | 2x 250W @ 8Ω (Bridged)
Amplifier Class Class-D
DSP Integrated Digital Signal Processing (Dynamic EQ for B&W subwoofers)
Frequency Response 10 Hz – 30 kHz (-3 dB)
THD+N < 1% (1 kHz, 4 Ohms, Full Power)
Inputs 2x Stereo RCA (Analog & Digital)
Outputs 2x Block (Speaker)
Network 1x RJ45 Ethernet (management & control)
Power Consumption Max: 1600W | Active: 130W | Standby: 0.5W
Dimensions (W x H x D) 17.2 x 1.7 x 12.2 in / 437 x 42.5 x 310 mm
Weight 9 lb / 4.1 kg
Warranty 2 Years (Limited)

Included in the Box