Stetsom Bravo HQ 800.4 Multichannel Car Audio Digital Amplifier - 2 Ohms Stable - 800 Watts RMS 4 Independent Channels

Stetsom Bravo HQ800.4 is a 4-channel car audio digital amplifier that is 2-ohm stable and delivers 800W RMS across four independent channels, engineered for serious multi-speaker installations.

• Number of Channels: 4 channels of amplification, enabling front, rear, and bridged configurations in a single unit for a cohesive system.
• RMS Power: 800W total across all channels, with power output that scales with impedance and supply voltage (e.g., 4 x 200W at 2 Ω / 12.6V; 4 x 250W at 2 Ω / 14.4V; 4 x 130W at 4 Ω / 12.6V; 4 x 170W at 4 Ω / 14.4V). This provides ample headroom for active front-end speakers or multiple channels of components.
• Bridge Power: 2 x 400W into 4 Ω when bridged, offering a high-power mono option for a sub or dedicated bass channel within a multi‑amplifier setup.
• Supply Voltage: 9V–17V DC, ensuring robust operation across typical automotive electrical environments with moderate voltage fluctuations.
• Frequency Response: 5 Hz – 22 kHz, covering deep bass through to smooth high treble for full-range musical detail.
• Crossover Low Pass: 50 Hz – 2.3 kHz (Variable), enabling tailoring of the low-pass characteristic to match woofer or midrange speakers.
• Crossover High Pass: 50 Hz – 2.3 kHz (Variable), allowing precise high-pass tuning to protect and optimize mid/high drivers.
• Signal to Noise: >80 dB, indicating a low noise floor and reduced audible hiss in a typical car environment.
• Input Sensitivity: RCA 250 mV / HIGH 1.5 V, giving flexibility to integrate with both line-level signals and high-level outputs from head units or aftermarket radios.
• Input Impedance: RCA 18 kΩ / HIGH 1 kΩ, compatible with a wide range of source devices and inputs.
• Dimensions: 58.5 mm (H) × 167 mm (W) × 235.5 mm (D), compact enough for trunk or dash installations without sacrificing performance.
• Weight: 1.5 kg, reflecting a solid chassis suitable for in-vehicle mounting.

The HQ800.4 is well-suited to premium multi-channel builds, allowing front stage components plus rear fill with the option to bridge channels for a sub or dedicated bass channel. Its 2-ohm stability and flexible crossover control give installers precise power delivery and tuning to optimize clarity, dynamics, and overall system cohesion in a demanding car audio environment.