Ultimate Blaze by Sonance PowerZone Connect 504D – 500W 4-Channel Dante DSP Amplifier in a Half-Rack Chassis
The Blaze by Sonance PowerZone Connect 504D is a 500W DSP-enabled Class-D amplifier with four output channels and integrated Audinate Dante™ audio-over-IP networking — all packed into an ultra-compact half-rack 1RU chassis. It takes everything the standard PowerZone Connect 504 offers and adds native Dante™ input capability, making it the go-to choice for integrators who need high-power-density amplification within a networked AV infrastructure.
Built on the same Pascal UMAC™ Class-D platform and PowerZone™ Control web app as the rest of the 1U family, the PowerZone Connect 504D delivers 125W per channel in Lo-Z or 250W per channel in Hi-Z, with automatic power-sharing and full-matrix DSP. For projects across Africa where Dante networking is already part of the AV design — or where future-proofing the audio backbone matters — this amplifier adds AoIP flexibility without changing the physical footprint or the commissioning workflow.
Design and Construction of the Blaze by Sonance PowerZone Connect 504D
The PowerZone Connect 504D uses the same half-rack 1RU enclosure as the non-Dante 504. Dimensions are 44 × 220 × 319 mm (1.7″ × 8.7″ × 12.6″) at a weight of 2.8 kg (6.2 lbs). Two half-rack units sit side by side in a single 19″ rack space, so you can pair a 504D with another half-rack model — a 504, 254, 252, or 122D — to build mixed-power and mixed-network configurations without wasting rack height.
The output stage runs on Pascal’s UMAC™ Class-D technology — a full-bandwidth PWM modulator designed for ultra-low distortion. The UREC™ universal mains switch-mode power supply features Power Factor Correction (PFC) and an integral standby converter, accepting 100–240V AC at 50–60 Hz for deployment anywhere in the world without external voltage adapters.
Protection circuits cover short circuit, DC fault, under-voltage, thermal, and overload conditions. Power consumption is 150W at full load, with standby draw below 0.5W — meeting both ErP and Energy Star compliance. The unit is UL listed and backed by Blaze’s five-year warranty. A built-in wireless access point (WAP) enables cable-free commissioning via Wi-Fi from any browser-equipped device.
Performance and Applications for the PowerZone Connect 504D
In Lo-Z mode, each of the four output channels delivers 125W into 4Ω or 8Ω loads — the same per-channel figure as the non-Dante 504. Switch to Hi-Z and the unit reconfigures as two channels at 250W each, driving 70V or 100V distributed speaker lines. Automatic power-sharing technology redistributes up to 2 × 250W across paired output channels proportionally, ensuring zones with heavier speaker loading receive the headroom they need.
The integrated Audinate Dante™ interface is the key differentiator from the standard 504. It provides low-latency, lossless digital audio transport over standard Ethernet, allowing the 504D to receive audio streams from any Dante-enabled source — mixing consoles, DSP processors, media servers, or other Dante amplifiers. This eliminates analogue cable runs between the source and the amplifier, simplifies infrastructure on multi-room projects, and makes system expansion as straightforward as adding another device to the network.
The built-in PowerZone™ Control web app provides the same full-matrix DSP as every other model in the range: multizone routing, input mixing, priority and ducking for paging, restriction, parametric EQ on inputs and outputs, high-pass filtering, speaker presets, delay, sine generator, Wall-S1 controller configuration, and Master/Slave S/PDIF linking for cascading multiple amplifiers. Access it from any browser via the built-in Wi-Fi or the RJ45 network port.
Audio quality is consistent with the 1U family: signal-to-noise ratio exceeds 106 dB (A-weighted), THD+N stays below 0.05% across 20 Hz – 20 kHz, and frequency response holds within +0/−0.25 dB into an 8Ω load. Typical applications include Dante-networked hotel multi-room systems, corporate campuses with centralised AV, education facilities with distributed classrooms, retail chains with head-office audio management, houses of worship running Dante from front-of-house, and any venue where digital audio distribution over standard IT infrastructure is preferred over long analogue cable runs.
Specifications – Blaze by Sonance PowerZone Connect 504D
- Total System Power: 500W
- Output Channels: 4 (Lo-Z) / 2 (Hi-Z)
- Output Power (Lo-Z, 4Ω/8Ω): 4 × 125W
- Output Power (Hi-Z, 70V/100V): 2 × 250W
- Powershare (up to): 2 × 250W across all channels
- Amplifier Topology: Pascal UMAC™ Class-D, full-bandwidth PWM modulator
- Output Voltage: 70Vp / 140Vpp (unloaded) — Bridged 140Vp / 280Vpp (unloaded)
- Signal-to-Noise Ratio: > 106 dB (A-weighted, 20 Hz – 20 kHz, 8Ω load)
- THD+N (typical): < 0.05% (20 Hz – 20 kHz, 8Ω, 3 dB below rated power)
- Frequency Response: 20 Hz – 20 kHz (+0/−0.25 dB, 8Ω, 3 dB below rated power)
- Power Consumption: 150W
- Standby Consumption: < 0.5W (ErP & Energy Star compliant)
- Power Supply: UREC™ universal mains SMPS with PFC
- Operating Voltage: 100–240V AC, 50–60 Hz
- Operating Temperature: 0–40°C
Connectivity and Control
- Dante™ Audio: Integrated Audinate Dante™ AoIP interface (native input)
- Analogue Inputs: 4 × RCA (unbalanced)
- Digital Audio: 1 × stereo S/PDIF input/output
- Network: RJ45 Ethernet port + built-in Wi-Fi / WAP (for PowerZone™ Control web app and Dante™)
- GPIO: Configurable general-purpose input/output (Euroblock connector)
- Outputs: 4 × Lo-Z (Euroblock) or 2 × Hi-Z
- S/PDIF Link: Master/Slave cascading between multiple amplifiers
- DSP Control: PowerZone™ Control web app (built-in) — full-matrix routing, multizone, input mixing, priority/ducking, restriction, parametric EQ, HPF, speaker presets, delay, sine generator, Wall-S1 configuration
Protection and Safety
- Protection Circuits: Short circuit, DC fault, under-voltage, thermal, overload
- Safety Certifications: UL listed audio equipment
- Energy Compliance: ErP 1275/2008/EC and Energy Star
- Warranty: 5 years
Physical Dimensions and Mounting
- Form Factor: Half-rack width, 1RU height
- Dimensions (H × W × D): 44 × 220 × 319 mm (1.7″ × 8.7″ × 12.6″)
- Weight: 2.8 kg (6.2 lbs)
- Mounting Options: Adhesive rubber feet included; optional rack ears, extension plates, and full rack support kits (available separately)
Conclusion
The Blaze by Sonance PowerZone Connect 504D is the Dante-enabled version of the most powerful half-rack amplifier in the PowerZone Connect 1U lineup. With 500W across four channels, 125W per output in Lo-Z, 250W per channel in Hi-Z, and integrated Audinate Dante™ AoIP networking, it delivers serious per-channel headroom with digital audio transport over standard Ethernet — all from a chassis that weighs under 3 kg and occupies half a rack space.
For integrators across Africa, the PowerZone Connect 504D is the clear choice when your project specifies Dante networking and you need four high-power zones from a compact form factor. It pairs seamlessly with other half-rack 1U models in the same rack space, shares the identical PowerZone™ Control DSP platform and five-year warranty, and slots directly into any Dante-enabled AV ecosystem. Combine it with Blaze Ci Series loudspeakers or any compatible 4Ω–16Ω and 70V/100V speakers to build a networked, professionally managed audio system that is ready for today’s installations and tomorrow’s expansions.
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About Blaze by Sonance.
Blaze by Sonance (formerly Blaze Audio) was founded in Copenhagen, Denmark in 2020 as a brand of Pascal A/S, a global leader in professional amplifier electronics. Acquired by Sonance in May 2025, Blaze brings Danish precision engineering and a focused product lineup of high-performance amplifiers and sound reinforcement loudspeakers to the installed sound market.
