Take control of your bass and your system health with the Down4Sound LED Bass Knob with Volt Meter — the ultimate combo of precision control, voltage monitoring, and clean design. Built for serious bassheads, this knob lets you fine-tune your amplifier’s output on the fly while keeping an eye on real-time system voltage.

Featuring a built-in digital volt meter, clickable potentiometer, and smooth RCA pass-through connectivity, the Down4Sound Bass Knob gives you professional-grade control in a compact, stylish package. Available in multiple LED color options, it not only performs flawlessly but looks great doing it — complete with the signature D4S hex-pattern faceplate.

Key Features:

• Integrated Digital Volt Meter – Monitor your system voltage instantly (7V–18V range).

• Clickable Potentiometer – Prevents unwanted movement; stays locked until you twist it.

• Precision Bass Control – Smooth, responsive adjustment for on-the-fly tuning.

• LED-Illuminated Housing – Stylish Red LED glow (also available in other colors).

• Signature D4S Hex Pattern – Premium engraved design that stands out in any build.

• Universal RCA Pass-Through – Easy in-line installation with included RCA leads.

• Compact & Durable Design – Engineered to last, built for daily use and SPL systems alike.

Specifications:

• Voltage Range: 7V – 18V

• RCA Cable Length (Input/Output): 14"

• Mounting: In-line RCA connection

• LED Colors Available: Red, Blue, Green, and more

• Housing: Rugged aluminum faceplate with LED-lit logo

Precision Control. Real-Time Protection.
The Down4Sound LED Bass Knob isn’t just another volume controller — it’s your system’s nerve center. Get instant bass control, voltage awareness, and visual appeal all in one compact, reliable unit.

Summary:
Simple, powerful, and stylish — the D4S LED Bass Knob with Volt Meter is a must-have for anyone serious about their system’s performance and protection.