Bowers & Wilkins CDA-4D 4 Channel Compact Distribution DSP Amplifier

$2,000.00 OR

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Model: FP43621 UPC: 714346339983 Item: 178674

Product Information

The CDA-4D is a compact distribution amplifier, designed to power current and future Bowers & Wilkins Custom Installation loudspeakers. Embedded DSP allows optimisation of a wide range of products and dynamic EQ for Bowers & Wilkins subwoofers. It boasts four channels of 125 watts each, and its full rack-width 1U design delivers high-performance from minimum rack space.

Compact Powerhouse

CDA-4D’s 1U size means that it takes up the minimum of rack real estate. But with four channels of 125 watts of Class D amplification on hand it can deliver power when required. Plus, as it’s bridgeable this can be configured to 2 x 250 watts, or a 2.1 setup (2 x 125 watts and 1 x 250 watts), where needed.

Impressively Smart

To ensure the CDA-4D delivers in the modern custom installation system, it is equipped with Digital Signal Processing (DSP). This allows it to be used in wide variety of situations, provides control over IP and configuration, and for providing dynamic EQ for Bowers & Wilkins subwoofers.


Whether you are looking to upgrade an in-situ installation or planning a new one, the CDA-4D DSP amplifier is ideal. It can drive two zones, and works with a wide variety of Bowers & Wilkins products, both current and future.



  • Audio Specifications
    • Load impedance range: >3Ω per channel (>6Ω in bridge mode)
    • Output Power per channel, 60W into 8Ω non-clipped: 125W into 4Ω
    • Output Power bridge mode, 250W into 8Ω non-clipped
    • Output Power total, all channels: 500W short term >125W continuous
    • DC offset voltage: <50mV
    • Frequency Response (-3dB): <10Hz to >30kHz, any load impedance
    • Frequency response accuracy
    • 20Hz-20kHz: +/-1dB
    • Dynamic range: >85dB A-Weighted
    • THD+N (1kHz, 500W, 4Ω): less than 1%
    • Voltage Gain: 15dB to 39dB, adjustableInput impedance: 10kΩ
    • Maximum input voltage: 4 Vrms
    • Signal sense threshold: 2.5mV (independent of Gain setting)
    • Wake-up time: <0.2s (If other zones active)
    • <2s (From all zones inactive)
    • Turn-off time: 15 minutes from last signal detected
    • 12V trigger input threshold: Typically 3V (recommended input is 5-15V) (TBC)
  • Controls & Indicators
    • Front panel
      • 1 x Power LED (unit active – White, Fault – Red)
      • 1 x Network status LEDs (Signal present – White, Fault – Red)
      • 2 x Zone status LEDs (Signal present – White, Fault – Red)
      • 1 x Reset button
  • Connectors
    • Input: 2 x RCA (pair) Phono socket, Analogue line in
      • 2 x RCA Phono socket, Digital line in
      • 1 x Ethernet
    • Output: 2 x 5.08mm Pitch 4-way Phoenix Combicon style
      • 12V trigger control: 1 x 3.5mm jack - 12V trigger IN
      • 1 x 3.5mm jack - 12V trigger OUT (Maximum 100mA pass-through)
  • Power
    • Power consumption: <0.5W Standby, WoL disabled
    • <2W Standby, WoL enabled
    • 300W maximum average (TBC)
    • 1,000W peak (TBC)
    • AC supply: 100-240V 50/60Hz
    • AC inlet: IEC C14, switched
  • Thermal
    • Thermal dissipation: TBC BTU/hr (standby)
    • TBC BTU/hr (Idle)
    • TBC BTU/hr (max)
  • Dimensions
    • Height: 42.5mm (1.7in) 1U (57.5mm (2.3in) plus feet)
    • Width: 436mm (17.2in)
    • Depth: 300mm (11.8in)
    • Net weight: 4.0kg (8.8lb)

What's in the Box

What's in the Box

  • CDA-4D 4 Channel Compact Distribution DSP Amplifier
  • Installation Guide
  • Metal Brackets
  • Silica Gel


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