D&B D20

D&B audiotechnik D20 – 4‑Channel Class‑D Amplifier with DSP

The D20 is a four-channel digital amplifier designed by d&b audiotechnik for high-performance live and installed sound applications. It delivers advanced signal processing, efficient Class‑D amplification, and intuitive control in a rugged 2U form factor.

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Power Output

• 4 × 1,600 W at 4 ohms (12 dB crest factor)
• 4 × 1,000 W at 4 ohms (6 dB crest factor)
• 4 × 800 W at 8 ohms
• Bridge mode and mixed configurations are supported

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DSP & Processing

• 2 × 16-band parametric EQ per channel
• Delay adjustable up to 10 seconds per channel
• Preset loudspeaker configurations for d&b systems
• LoadMatch technology for speaker cable compensation
• Adjustable gain, limiter, phase, and polarity settings
• Total system latency approximately 0.3 ms

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Connectivity

• 4 analog XLR inputs
• 4 AES3 digital inputs with fallback options
• 4 loudspeaker outputs via NL4 connectors (NL8 optional)
• Ethernet control via OCA/AES70 protocol
• CAN-Bus for d&b remote network compatibility

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User Interface

• 3.5-inch color TFT touchscreen
• Intuitive rotary encoder and menu navigation
• Real-time metering, configuration, and fault monitoring

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Protection & Power

• Universal power supply (100–240 V AC) with power factor correction
• Full suite of protection circuits: short circuit, thermal, overcurrent, and DC
• Variable-speed fans with front-to-rear airflow
• Power-on soft start and auto-mute under fault conditions

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Specifications

Feature	Detail
Channels	4
Output @ 4 Ω	1,600 W (12 dB crest factor)
Output @ 8 Ω	800 W
Frequency Response	20 Hz – 20 kHz ±0.5 dB
THD + N	< 0.01%
S/N Ratio	> 110 dB
Latency	~0.3 ms
Dimensions	2U – 19” rack, ~460 mm depth
Weight	Approx. 10.8 kg

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Applications

• Ideal for mid-sized FOH systems and monitor setups
• Integration with d&b speakers including point-source, column, and subwoofer models
• Touring, corporate AV, and permanent installations requiring network control and reliability

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