Down4Sound

Filters

Shop the complete Down4Sound catalog at JS Ultimate Sounds — JP-series amplifiers, subwoofers, DSPs, pro-audio speakers, enclosures, wiring and accessories in stock and ready to ship. Down4Sound is a fan-favorite for big bass, bold colors and big value.

Down4Sound Amplifiers

Shop Down4Sound amps for every build, from compact 4-channel amps to high-power monoblocks. Popular picks include the JP95T 5-channel and the any-ohm JP1.2Z3 monoblock, available in multiple finishes.

Down4Sound Subwoofers & Processors

Hit harder with Down4Sound subwoofers like the TCX 15", and recover low-end with the Bass Max Pro DSP and bass restoration gear.

Why Buy Down4Sound From JS Ultimate Sounds

We ship genuine Down4Sound product with warranty support and fast delivery. New to the brand? Read our honest Is Down4Sound Good? review to choose the right amp for your system.

Free Shipping Over $99

Free shipping applies to qualifying orders within the contiguous US. Oversized and special-order items may vary.

Expert Support

Real car-audio enthusiasts, ready to help you build it right.

Bundles & Deals

Save on pre-matched bass packages and combo deals.

Secure Checkout

Shop safely with encrypted, secure payment options.