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The Down4Sound Bass Knob V2 with Voltage Readout is a professional-grade remote bass control and voltage meter, designed to give you real-time system voltage monitoring alongside precise subwoofer level adjustment. Featuring a sleek injection-molded housing and integrated volt meter, it upgrades standard bass knobs with enhanced functionality and durability. Ideal for car audio enthusiasts who want control, feedback and style in one compact unit.

Key Benefits

• Real-time voltage readout (7 V–18 V) allows you to monitor your 12 V system and protect your components. 
• Precise RCA pass-through design enables smooth signal flow to your amplifier and better integration with high-end systems. 
• Injection-molded finish with LED illumination (blue or selected color) delivers premium look and build quality. 
• Click-style potentiometer prevents unwanted adjustment during vehicle movement—ideal for installation in mobile environments. 
• Compatible with any amplifier requiring RCA input and remote level control—adds flexibility to both OEM and aftermarket installs. 
• Compact and robust design built for long-term use in demanding car audio applications.

Technical Specifications

• RMS: N/A (control accessory)
• Max: N/A
• Size: Standard bass knob form factor (≈ 1.5″ diameter knob)
• Impedance: Not applicable
• Xmax: Not applicable
• Voice Coil: Not applicable
• Sensitivity: Not applicable
• Frequency: Direct control—operates across full audio signal pass-through
• Construction: Injection-molded housing, integrated digital volt meter, RCA pass-through wiring. 
• Type of Ventilation: N/A
• Recommended for: Car audio systems requiring external bass level control and system voltage monitoring

Compatibility & Installation

Works seamlessly in 12 V automotive audio systems; simply connect constant 12 V power, ground, remote input from source unit, and remote output to amplifier remote wire. Best used where you want both bass knob functionality and real-time voltage monitoring.

FAQS

• What does the Down 4 Sound bass knob actually do?
  It lets you control your subwoofer level on the fly, so you can turn the bass up or down without touching your head unit.
• Is the Down 4 Sound bass knob easy to install?
  Yes, it’s pretty simple—just connect it to your amp or processor and mount it somewhere you can reach.
• Will the Down 4 Sound bass knob work with any amplifier?
  It works with most amps that support remote level control, but it’s always good to double-check compatibility.
• Do you ship the Down 4 Sound bass knob anywhere in the U.S.?
  Yes, we ship it nationwide, no matter what state you’re in.