Package Includes: (1) Rockville RVA-M2 2500w Peak/625w Dyno-Certified RMS @ 1 Ohm Amplifier Mono Car Amp+Remote; (1) Rockville RWK41 4 Gauge Complete Car Amp Wiring Installation Wire Kit with RCA's High-Power Mono Amplifier: Dyno-Certified 625W RMS @ 1Ω with Class-D efficiency, high-speed MOSFET supply, adjustable low-pass (32-300Hz), subsonic (10-50Hz), phase switch, and 0-12dB bass boost for accurate subwoofer control. Built for Stable Performance: IC-controlled protection monitors thermal, short, under-voltage (9V), and over-voltage (16V). Features extruded aluminum heatsink, radiation cooling, soft-start, dual 30A fuses, LED status, and compact 13" x 8.5" x 2.24" design. Weight: 7 lbs. RWK41 4-Gauge Wiring Kit: Includes SuperFlex 4-gauge power/ground, 17' 100% copper twisted-pair RCA, 17' remote wire, 16-gauge speaker wire, 60A AGU fuse with gold-plated holder, split loom, and installation accessories for clean, low-resistance power delivery. Optimized for Bass Systems: Ideal for 1-ohm subwoofer setups, offering clean RMS power with tuning flexibility for sealed or ported enclosures. The included wired bass remote allows quick level adjustments for different music and listening conditions. The Rockville RVA-M2 + RWK41 bundle provides a powerful mono amplification platform paired with a true American Wire Gauge 4-gauge installation kit engineered for reliable current delivery. RVA-M2 Amplifier: The RVA-M2 delivers Dyno-Certified 625 watts RMS at 1 ohm for strong, controlled low-frequency output. Its Class-D architecture and high-speed MOSFET power supply support efficient operation, while tuning tools such as a 32-300Hz low-pass filter, 10-50Hz subsonic filter, phase switch, and 0-12dB bass equalizer allow precise subwoofer integration. IC-controlled protection guards against thermal, short, over-voltage, and under-voltage conditions. A soft-start system, dual 30A fuses, LED status indicator, and an extruded aluminum heatsink with radiation cooling help maintain consistent performance. Dimensions are 13" x 8.5" x 2.24", and the amplifier weighs 7 lbs. The included wired bass remote provides convenient cabin-level adjustment. RWK41 4-Gauge Installation Kit: The RWK41 kit uses copper-rich conductors to reduce resistance and maintain stable voltage to the amplifier. It includes SuperFlex 4-gauge power and ground wire, a 17' 100% copper twisted-pair RCA cable for noise-suppressed signal transfer, remote and speaker wire, a 60-amp AGU fuse with a gold-plated holder, and a 7' split loom for under-hood protection. Ring terminals, spades, grommets, ties, and connectors are provided for an organized and secure installation. Together, this bundle supplies the power, wiring quality, and tuning precision required for reliable daily bass performance in a wide range of vehicle audio builds.