body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;line-height:1.6;margin:0;padding:24px;color:#111} h1,h2,h3{margin:0 0 12px} .note{color:#374151} .specs{border-collapse:collapse;width:100%;max-width:900px} .specs td,.specs th{border:1px solid #e5e7eb;padding:10px;text-align:left} .pill{display:inline-block;background:#f3f4f6;border-radius:999px;padding:6px 10px;margin:4px 6px 0 0;font-size:.85rem} DC Audio 250.4 Competition 4-Channel Amplifier The DC Audio 250.4 is a competition 4-channel Class D amplifier built for systems where the mids & highs must keep pace with a serious low-end setup. With up to 400W x4 @2Ω or 850W x2 @4Ω bridged, a fully active crossover section, and a clip-light remote, it delivers clean, controllable power for SQ, pro-audio, and demo builds. Not 1-ohm stable DC Audio 250.4 Power Ratings (RMS) 250W x4 @ 4Ω (14.4V) 400W x4 @ 2Ω (14.4V) 850W x2 @ 4Ω bridged (14.4V) Total Power: 1700W Key Features — DC Audio 250.4 4-Channel Amplifier Class D efficiency with massive multi-channel output Active crossover: HPF / LPF / BP with x1 / x10 range multiply Variable High-Pass: 20(200)Hz – 800(8k)Hz Variable Low-Pass: 50(500)Hz – 800(8k)Hz Remote with Clipping Light for safer tuning Status LEDs: Power / Protect / Clip 1/0 AWG power & ground inputs; 8 AWG speaker outputs External 200A fuse recommended Full Specifications — DC Audio 250.4 Model 250.4 Amplifier Class Class D Input Sensitivity 6V ~ 0.2V Frequency Response 20Hz ~ 20kHz Crossover Slope 12 dB / Octave High-Pass 20(200)Hz – 800(8k)Hz (x10 multiply) Low-Pass 50(500)Hz – 800(8k)Hz (x10 multiply) Crossover Modes HPF / FULL / LP / BP Remote Control Yes — with Clipping Light Signal to Noise Ratio 95 dB Damping Factor 130+ THD @ 4Ω < 0.1% Fuse Rating External 200A LED Indicators Power / Protect / Clip Heatsink Dimensions 13.78" L × 9.38" W × 2.35" H (≈ 350 × 238 × 59.6 mm) Power/Ground Inputs 1/0 AWG Speaker Connections 8 AWG Stability 2Ω stereo / 4Ω bridged (not 1Ω stable) Why Choose the DC Audio 250.4? When your build demands loud, clean mids & highs to match heavy bass, the DC Audio 250.4 provides headroom, control, and reliability. Use the active band-pass capability to precisely cross over midbass → midrange → tweeters, and monitor for distortion with the included clip-light remote. FAQs Is the DC Audio 250.4 1-ohm stable? No. Operate at 2Ω stereo or 4Ω bridged. Can I bridge for more power? Yes — up to 850W x2 @4Ω bridged. Confirm impedance before powering up. What size power inputs? 1/0 AWG power/ground, with 8 AWG speaker connections. Search-Friendly Keywords DC Audio 250.4 amplifier, DC Audio 4 channel amp, competition 4 channel amplifier, Class D car amplifier, 400W x4 @2Ω, 250W x4 @4Ω, 850W x2 bridged @4Ω, active crossover 4 channel, clip light remote amp, 1/0 AWG power inputs DC Audio 10.0k 10,000 watt Mono Block Amplifier— available at LibertyBassShop.com.
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