SoundQubed 4400 Watt F4-4400 Full Bridge 4 Channel Amplifier

SoundQubed F4-4400 — 4-Channel Amplifier | F-Series Full Bridge | 750W x 4 @ 4Ω

The SoundQubed F4-4400 is the powerhouse 4-channel amplifier of the 2024 F-Series lineup — a full-bridge, digital-class amp delivering 750W x 4 at 4Ω, 1,100W x 4 at 2Ω, and a massive 2,200W x 2 bridged at 4Ω in a compact 11.81" x 8.46" x 2.28" chassis. Whether you’re building a full front stage with serious power, running a pair of component sets at competition levels, or bridging channels for high-output subwoofer duty, the F4-4400 has the flexibility and the muscle to do it all. This amplifier brings the power — in a platform that fits virtually anywhere.

The F4-4400 features a full-bridge digital amplifier design with a signal-to-noise ratio of 95 dB, 85% efficiency at 4 ohm, and a damping factor of 92. It accepts low-level input from 400mV to 4V and features selectable HPF/FULL crossover with HPF range of 40 Hz–400 Hz and LPF range of 40 Hz–400 Hz for precise frequency control across all four channels. The bass boost (0–12 dB @ 45 Hz) gives you serious low-end punch when bridging channels for subwoofer applications. Like all F-Series amplifiers, it features an enlarged heatsink for superior heat transfer and an optional temperature/voltage readout on the bass knob.

Stable at 2Ω in stereo and 4Ω in bridged mode, the F4-4400 is protected by a full suite of thermal, overload, DC output, short circuit, voltage input, and clipping protection circuits. With a 360A fuse rating and a cooling fan, it’s built to run hard and stay cool doing it.

Why Choose the SoundQubed F4-4400?

• 750W x 4 @ 4Ω / 1,100W x 4 @ 2Ω / 2,200W x 2 Bridged @ 4Ω — Massive power output across all configurations — one of the most powerful 4-channel amplifiers in its class.
• Full Bridge Digital Design — More efficient and more powerful than half-bridge designs at the same physical size.
• Enlarged Heatsink + Cooling Fan — Superior heat transfer keeps the amp cool during sustained high-power use and extended demo sessions.
• Optional Temp & Voltage Readout — Bass knob with optional temperature and voltage display gives you real-time system monitoring.
• Selectable HPF/FULL + Variable LPF (40–400 Hz) — Flexible crossover configuration for full-range, high-pass, or bandpass applications.
• Bass Boost 0–12 dB @ 45 Hz — Dial in serious low-end punch when bridging channels for subwoofer duty.
• 95 dB Signal-to-Noise Ratio — Clean, accurate signal reproduction even at extreme output levels.
• Full Protection Suite — Thermal, overload, DC output, short circuit, voltage input, and clipping protection for worry-free high-power operation.

System Configuration Recommendations

Full Front Stage Build: Run all four channels at 2Ω for 1,100W per channel to a full set of high-power component speakers. Use the selectable HPF to protect your speakers from low-frequency content and let your DSP handle signal processing. At this power level, high-quality component speakers with appropriate RMS ratings are essential.

Front Stage + Subwoofer: Use channels 1/2 for front component speakers (HPF filtered at 80–100 Hz) and bridge channels 3/4 for a subwoofer (LPF filtered at 80 Hz) for 2,200W of subwoofer power. This gives you a complete, high-output system from a single amplifier.

Electrical Requirements: The F4-4400 requires a 360A fuse and proper 4-gauge power and ground wiring at minimum. For sustained high-power use at full output, a high-output alternator and upgraded battery are strongly recommended. A dash-mounted voltmeter is advised for monitoring system voltage under load.

Full Specifications

Frequently Asked Questions

Q: Can the F4-4400 power my whole car audio system?
A: Yes — use channels 1/2 for front component speakers (HPF filtered) and bridge channels 3/4 for a subwoofer (LPF filtered at 80 Hz) for 2,200W of subwoofer power. One amp, complete high-output system.

Q: What’s the minimum impedance for bridged mode?
A: The F4-4400 is stable at 4Ω in bridged mode and 2Ω in stereo mode. Do not bridge into a load below 4Ω — this will damage the amplifier.

Q: What’s the difference between the F4-4400 and F4-1600?
A: The F4-4400 delivers significantly more power — 750W x4 vs. 250W x4 at 4Ω — making it the choice for high-output front stage builds, competition-level component setups, and systems that need serious bridged subwoofer power from a 4-channel amp.

Q: What wiring do I need for the F4-4400?
A: A 360A fuse is required. Proper 4-gauge power and ground wiring is the minimum. For sustained high-power use, a high-output alternator and upgraded battery are strongly recommended.