Massive Audio H8004 | 125 Watts RMS x 4 @ 4 Ohm 4 Channel Hippo Series High Performance Amplifier

Massive Audio Full-Range Digital Amplifier – Precision Power for Midrange Clarity Engineered for audiophiles and performance-driven builds, this Massive Audio full-range digital amplifier delivers extreme power in a compact chassis without sacrificing sound quality or reliability. Purpose-built for midrange speakers, it combines a low-distortion, wide bandwidth design with premium internal components for accurate, high-output sound. Despite its small footprint-measuring just 6.97" x 5.9" x 2.17" this amplifier offers powerful and precise audio reproduction, with a frequency response range from 10Hz to 20KHz, making it ideal for midrange applications. Both the low-pass and subsonic filters are adjustable between 20Hz and 3KHz, offering flexible tuning for your setup. With less than 0.5% total harmonic distortion at 4 ohms and a signal-to-noise ratio greater than 95dB, you’ll experience clean, detailed sound without unwanted interference. Built around a Full MOSFET power supply with high-grade switching devices, this amplifier also includes built-in noise reduction circuitry to eliminate hum and buzz. Internally, it’s constructed using a Mil-Spec double-sided PCB with surface-mount components, ensuring durability and high-performance signal flow. The amplifier is stable down to a 2-ohm minimum load, giving you flexibility in matching speaker configurations. With a digital voltage LED display and clear PWR, CLIP, and PROTECT indicators, system monitoring is easy and accurate. A built-in auto-sensing turn-on function with LED indicator (for Hi-Level inputs) and a 12V remote output allow for seamless integration with OEM systems or additional external devices. To protect your system, Massive Audio’s next-generation 5-Way Protection Circuitry continuously monitors voltage, temperature, and load conditions-delivering peace of mind without compromising performance. And while it omits bass boost and gain remote functions to focus on midrange accuracy, it meets CTA-2006 standards and proudly carries the Massive Audio illuminated logo, symbolizing quality that’s designed and engineered in the U.S.A. For clean, controlled midrange sound in a reliable, high-efficiency package, this amplifier is your ultimate upgrade.

• Powerful & Versatile Output – Delivers 125W x 4 RMS @ 4Ω or 450W x 2 RMS bridged, making it ideal for midrange setups requiring clean, controlled power and flexible system design.
• Full-Range Clarity with Low Distortion – Offers a wide 10Hz–20KHz frequency response and <0.5% THD at 4Ω for pure, audiophile-grade sound across the full band.
• Advanced Crossover Control – Features adjustable low pass and subsonic filters (20Hz–3KHz) for precision tuning of midrange frequencies in any vehicle audio setup.
• Smart Design, Quiet Operation – Built with Full MOSFETs, noise reduction circuitry, and a >95dB S/N ratio for ultra-clean output and high-efficiency performance.
• Compact & Engineered to Last – Measures just 6.97" x 5.9" x 2.17", supports 2Ω minimum load, and includes 5-way protection with auto sensing turn-on and 12V remote out.