Orion XTRPRO4.2K is the most powerful 4-channel amp in the XTRPRO series, delivering up to 520 watts per channel at 1 ohm which is perfect for 3-way active systems, multi-driver doors, or added low-end punch. This Amplifier is powered by Orion’s IntelliTech full-range architecture, it offers advanced signal control, thermal protection, and tuning flexibility in a compact, rugged chassis. With onboard filters, a 12dB bass boost, and remote gain control, you can fine-tune your sound with precision. Whether you're a pro installer or an audio enthusiast, the XTRPRO4.2K delivers clean, consistent power and versatility for demanding builds. Features: Massive Output: Pushes 520W per channel at 1 ohm is ideal for 3-way active systems, multi-speaker doors, or full-range setups. Full-Range Precision: Orion’s IntelliTech architecture delivers clean highs, solid midbass, and sub control in one flexible amp. Advanced Tuning: Built-in crossovers and 12dB bass boost give you full control over your system’s sound. Compact & Protected: Slim, install-friendly design with smart thermal/load protection for reliable performance under pressure. Specifications: IntelliTech Full-Range Class D Design 1-Ohm Stable on All Channels High-Pass Filter: 40Hz – 500Hz Low-Pass Filter: 40Hz – 300Hz Bass Boost: 0 – 12dB Gain Control: 200mV – 6V Signal-to-Noise Ratio: >94dB Damping Factor: >100 Remote Gain Controller Included Thermal and Short Circuit Protection Heavy-Duty Power & Speaker Terminals 14.96” x 5.90” x 2.16” (380mm x 150mm x 55mm) Power Ratings: RMS Power @ 4 Ohms: 240W x 4CHRMS Power @ 2 Ohms: 380W x 4CHRMS Power @ 1 Ohm: 520W x 4CH Power Terminal Managements: Positive Terminals: 3 x 4 AWG.Negative Terminals: 3 x 4 AWG.Remote Turn-ON Signal: 10 AWG.Speaker Output Terminals: 4 AWG.