AudioCenter D Series 4-Channel DSP Power Amplifiers

AudioCenter D4.2K — 4-Channel DSP Power Amplifier

Choose the D4.2K when the system needs AudioCenter’s full four-channel DSP/loudspeaker-management platform but the speakers do not need the output, AC demand or rack burden of the larger D models. It is the cleanest fit for smaller full-range cabinets, fills, monitor channels and installed low-Z zones where 550 W × 4 at 4 ohms is already the right power class.

The reason to buy this instead of the D4.4K, D4.6K or D4.10K is system match—not price alone. AudioCenter publishes 350 W × 4 at 8 ohms, 550 W × 4 at 4 ohms and 1,100 W × 2 bridged at 8 ohms under its 1 kHz / 20 ms burst / 1% THD+N test condition. Its published 1/8-power consumption is 375 W, and the 404 mm-deep chassis weighs 8.5 kg, so it is also the easiest D-Series model to accommodate when rack depth and branch-circuit capacity are limited.

You still get the same core processing architecture: four analog plus four AES inputs, 48 kHz / 24-bit DSP, input/output EQ, crossover filters, delay, compressor/limiter functions, four channels of 2,048-tap FIR processing, and BrainCore NET control. If the system actually needs Dante network audio, use the matching D4.2K-D instead; otherwise the standard D4.2K avoids paying for network-audio capability that will not be used.

Manufacturer Specifications

• 8-ohm stereo: 350 W × 4

• 4-ohm stereo: 550 W × 4

• 8-ohm bridged: 1,100 W × 2

• DSP: 48 kHz / 24-bit

• Inputs: 4 analog + 4 AES

• Input EQ: 15-band

• Output EQ: 10-band

• FIR: 4 × 2,048 taps

• Input delay: up to 90 ms

• Output delay: up to 20 ms

• Published 1/8-power consumption at 4 ohms: 375 W

• Dimensions: 483 × 88 × 404 mm

• Net weight: 8.5 kg

• Network control: BrainCore NET, 2 × RJ45