Stetsom Bravo HQ 400.4 – 400W RMS Multichannel Car Amplifier, 4-Ch, 2Ω Stable, Crossover Control

Stetsom Bravo HQ 400.4: Power, Clarity, and Versatility for Your Car Audio

Upgrade your vehicle's sound with a compact, high‑performance amplifier designed to deliver clean, controlled power across four channels. The Stetsom Bravo HQ 400.4 combines robust Class D efficiency with flexible tuning options to bring you closer to the music you love, whether you’re cruising or parked at the curb.

Power and channel versatility

This amplifier delivers 400 Watts RMS total across four independent channels, enabling rich front and rear speaker setups or a bridged configuration for higher-demand outputs. The Mosfet Class D design emphasizes efficiency and dynamic response, while the unit remains stable at 2 ohms and can bridge to a single higher‑power output if your system calls for it.

• 400 Watts RMS total across four independent channels
• 4-channel design with 2 Ω stability and bridge capability
• Efficient Mosfet Class D architecture for cooler operation
• Compact cooler improves ventilation and safety during long sessions

Sound control and tuning

Take control of the tonal balance with a Variable Crossover that covers HPF and LPF from 5 Hz up to 30 kHz. When you prefer the amp to reproduce the full spectrum, flat mode disables adjustments to let the hardware handle the range, preserving signal integrity.

• Variable HPF/LPF crossover: 5 Hz to 30 kHz
• Flat mode: all adjustments disabled for full-range playback

Inputs, outputs, and installation-friendly design

Connect from multiple sources with RCA input and High input options, while four independent channels provide routing flexibility for front and rear speakers. A purpose-built cooling system helps prevent heat buildup during longer drives, and the power wiring is designed for sturdy, safe installations.

• RCA input and High input options for flexible source connection
• 4 independent channels for versatile speaker setups
• Compact cooler for improved ventilation and long-use safety

Ready for your car audio upgrade

Whether you’re building a four-speaker setup or a more ambitious multi‑amplified configuration, the Bravo HQ 400.4 offers power and control to explore your preferred sound profile. Benefits are presented as possibilities, not guarantees, with proper installation and matching components.