The DII1400.4 packs 1,400 watts of Class-D output into a 7.59" x 5.37" footprint, making it a practical choice for builds where space is limited but power isn't. All controls sit on a top-mounted panel under a protective cover, keeping adjustments accessible without sacrificing a clean install. With flexible turn-on modes and bridgeable channels, it adapts to a wide range of system configurations.

• Compact Class-D design: Full 4-channel output in a 202mm x 136.5mm x 53mm chassis — engineered for tight installs without compromising power delivery.
• Flexible power output: 210W x 4 at 4 ohms, 310W x 4 at 2 ohms, or 620W x 2 bridged at 4 ohms.
• Multiple turn-on modes: Supports REM, VOX, and DC turn-on — compatible with a range of head unit and OEM integration scenarios.
• Switchable input configuration: 2/4 channel input switch with high-level input sensitivity up to 12V for direct source unit connections.
• Full-range crossover control: Independent HPF and LPF adjustable from 30Hz to 300Hz on all channels.
• RCA pass-through outputs: Simplifies daisy-chaining additional amplifiers without signal loss.
• 4-way protection circuit: Guards against thermal, voltage, and speaker DC faults, with clip detection LEDs for real-time monitoring.