DC Audio 250.4 Class D 4-Channel Amplifier

DC Audio 250.4 is a four-channel Class D amplifier delivering 250W per channel at 4Ω and 400W per channel at 2Ω, with not 1Ω stability, making it a robust choice for multi-speaker front-end systems that demand solid mids and highs without sacrificing efficiency.

• Power Output: 250W x4 @ 4Ω and 400W x4 @ 2Ω; not 1Ω stable. Real-world: higher power into lower-impedance loads translates to more headroom for demanding front-stage speakers and tighter control of your entire system when paired with appropriate drivers.
• Class D: Efficient switching design. Real-world: less heat for a given power, enabling a compact heatsink while maintaining high output.
• Frequency Response: 20 Hz – 20 kHz. Real-world: covers the full audible spectrum, supporting faithful reproduction of bass, mids, and highs from a single chassis.
• Input Sensitivity: 6V ~ 0.2V. Real-world: compatibility with a wide range of head-unit preamp outputs, allowing full-range signal utilization without excessive gain.
• 12dB/Octave Crossover: YES. Real-world: provides a steep enough roll-off to reduce bleed between channels and help with clean crossovers in a multi-speaker setup.
• High Pass / Low Pass Crossover: High Pass 20(200) Hz – 800(8K) Hz, Low Pass 50(500) Hz – 800(8K) Hz, x10 multiply. Real-world: precise crossover points to tailor each channel for a front-stage or bridged sub setup while preserving clarity.
• Crossover Selector Switch: HPF / FULL / LP / BP. Real-world: quick, on-device selection to configure full-range, high-pass, low-pass, or band-pass operation without external processors.
• Remote Control: YES With Clipping Light. Real-world: monitor and adjust output on the fly, with a visual indicator to prevent overdrive.
• Signal-to-Noise Ratio: 95 dB. Real-world: low noise floor, contributing to clearer, quieter amplification even at higher output levels.
• Damping Factor: 130<. Real-world: strong control over speaker motion, aiding tight bass and responsive transients.
• THD @ 4Ω: Less than 0.1%. Real-world: low distortion at rated load, preserving audio fidelity at high output levels.
• Fuse Rating: External 200 amp. Real-world: provides protection against overloads and helps maintain system integrity under demanding conditions.
• LED Status Lights: Power and Protect / Clipping. Real-world: quick visual status for system health and potential overdrive scenarios.
• Heatsink Dimensions: 13.78"/350mm (L) x 9.38"/66mm (W) x 2.35"/59.6mm (H). Real-world: substantial cooling surface to support sustained high-performance operation in a vehicle interior.
• Power / Ground Inputs: 1/0 AWG Power / Ground inputs. Real-world: supports heavyweight power delivery for low-impedance installs and high-current demand.
• Speaker Connections: 8 AWG. Real-world: robust speaker wiring compatibility for clean, low-impedance speaker runs.

The DC Audio 250.4 is well suited to four-channel front-stage builds where you want precise crossover control, clear mids and highs, and solid overall output without excessive heat. With its adjustable HPF/LP, remote clipping indicator, and strong protection features, it fits active crossovers and multi-driver setups that aim for accurate imaging and dynamic response.