BOSS Audio OX3KD Onyx 3000W Mono Amplifier | Class D, Remote Control

Power and Precision for Your Ride

The BOSS Audio OX3KD Onyx amplifier is a purpose-built monoblock designed to deliver controlled, high‑output bass. With up to strong-sounding watts behind a dedicated channel, this unit focuses power where you need it most — your subwoofer or low‑end speaker — while keeping the signal clean and dynamic. Its Class D topology provides efficient performance and cooler operation, helping maintain cabin clarity even as the music component pushes harder. The design is 1Ω stable, a configuration many car-audio enthusiasts explore when pairing robust subs with compact wiring. A PWM MOSFET power supply reinforces stable voltage delivery, supporting responsive transients and steady performance as tracks shift from bass hits to musical crescendos.

Tune with Purpose

Whether you’re upgrading a daily driver or building a show car, the OX3KD offers flexible tuning to match your setup. Use the Low Pass Filter to carve out a precise bass range and the Subsonic Filter to reduce ultra-low frequencies that can strain the woofer at high volume. Bass Boost provides a controlled touch of extra punch on demand, while Phase Control helps the amp align with your overall speaker layout. Remote Subwoofer Control lets you adjust levels from the driver seat for quick, on-the-fly tuning and better listening balance.

• Monoblock design focused on a single high‑output channel
• Class D topology for efficient, cooler operation
• 1Ω stability supports demanding low‑impedance subs
• PWM MOSFET power supply for stable, dynamic performance
• RCA In/Out for flexible integration with head units
• Low Pass Filter to shape bass range
• Subsonic Filter to protect subs from ultra‑low signals
• Bass Boost for controlled extra punch
• Phase Control to align with your speaker array
• Remote Subwoofer Control for on‑the‑fly tuning
• Strapping Capable for additional amplification options
• LED Illumination for easy visibility in low light
• Thermal, Short and Overload Protection Circuits for safety and reliability

Practical Setup Options

• RCA In/Out enables straightforward connections with aftermarket or factory head units
• Strapping Capable allows pairing with other amplifiers for increased power in specific systems
• Remote Subwoofer Control simplifies volume management without opening the vehicle door
• Low Pass and Subsonic Filters help tailor sound to your listening environment
• LED lighting adds a touch of style while staying unobtrusive

Real-World Scenarios

In daily driving, you can enjoy crisp, controlled bass that remains clear at higher volumes. For show vehicles or tuned setups, the combination of filters and remote control makes on-the-fly adjustments practical during builds or events, without sacrificing overall system integrity. The OX3KD’s protection features give added confidence when pushing the system toward its defined limits, while staying within safe operating conditions.

Durability and Confidence

Beyond performance, the amplifier is built to endure typical automotive conditions. Protective circuits monitor for overheating, shorts, and overloads, helping preserve your sound system over time. The LED indicator provides quick status checks, while the solid construction supports installation in a variety of setups.