STX850W

Deep Bass Restoration Technology

The STX Audio STX850W is engineered to restore missing low-frequency detail from compressed or standard audio sources. Its advanced bass restoration circuit reinjects deep bass information, delivering a fuller, richer, and more immersive listening experience across all music formats including streaming, radio, and CDs.

Precision Bass Customization Controls

Dial in your perfect bass response using dual rotary controls designed for accuracy and flexibility. The SWEEP knob allows center frequency selection between 27Hz and 63Hz, while the WIDE control adjusts the range of bass enhancement. This gives you full control to match your vehicle’s acoustics and personal sound preferences.

High-Fidelity Signal Processing & Clean Output

With a wide 10Hz–35kHz frequency response, ultra-low 0.0025% total harmonic distortion, and an outstanding 133dB signal-to-noise ratio, the STX850W ensures pure, accurate audio reproduction. Balanced high-voltage RCA inputs with strong noise rejection eliminate engine whine and electrical interference for a clean, professional-grade signal path.

Key Highlights

• Advanced digital bass restoration circuit
• SWEEP control adjustable from 27Hz–63Hz
• WIDE control for bass frequency shaping
• 133dB signal-to-noise ratio for ultra-clean output
• 10Hz–35kHz wide frequency response
• Extremely low 0.0025% total harmonic distortion
• Balanced RCA inputs up to 15V RMS handling
• Over 62dB noise rejection reduces interference
• Dash-mount remote with LED indicator included
• PFM subsonic filter for cleaner bass output
• Low 150mA power consumption for efficiency
• Inline installation before amplifiers/crossovers

What’s Included in the Package

• STX Audio STX850W Digital Bass Processor
• Dash-Mount Remote Control with LED Indicator
• Remote Cable
• Power/Signal Wiring Kit
• Mounting Hardware
• User Manual