This bundle includes 2x Kicker 51MWLE104 - MWE 10-Inch Loaded Premium Marine Sub Enclosure with Passive Radiator 4ohm, and a Kicker 48KXMA5004 KXMA500.4 4x125w 4-Ch Full-Range Class-D Marine Amplifier. The Kicker 51MWLE104 features a 10-inch MWE Premium Subwoofer and a custom-tuned 10-inch passive radiator. With a weather-resistant design, these sub enclosures deliver powerful bass whether up-firing, front-firing, or down-firing. The 4-ohm impedance, 800 watts peak power, and dimensions of 12-5/8" (H) x 25-9/16" (W) x 8-11/16" (D) make them versatile for boat installations. The package includes charcoal grilles and is ready to upgrade with optional white grilles. The Kicker 48KXMA5004 Marine Amplifier offers 4 channels with 125 watts per channel at 2 ohms, 75 watts per channel at 4 ohms, and 250 watts bridged mono at 4 ohms. Equipped with conformal-coated circuit boards for moisture protection, marine-compliant terminals, and a small footprint, it is ideal for marine environments. The amp features a 0-6dB variable bass boost, built-in crossovers, and highly efficient Class D technology for superior sound quality. This amp measures 2-1/8" (H) x 8-5/16" (W) x 11-3/16" (L) for easy installation. Experience premium marine audio with this bundle featuring durable construction, high-performance sub enclosures, and a powerful amplifier, making it a perfect choice for enhancing your marine sound system.