Infinity M4555A Marine Grade / 5-Channel, 45w X 4, 500w X 1 amplifier

New weather-resistant & high-performance Infinity Marine amplifiers deliver impressive power from a compact chassis designed to withstand outdoor environments. Marine amplifiers incorporate our latest amplifier topology that includes selectable all-, high-, or low-pass crossovers with variable electronic frequency adjustment for precision system tuning. Engineered for harsh marine conditions, with power and performance to meet the needs of any outdoor audio system, Infinity Marine amplifiers are the perfect match for all of your Infinity marine products. In The Box: 1 amplifier Stainless steel mounting hardware Rubber inserts 4 High-level input adapters 3 spare fuses 2 2-color brand stickers Quick start guide Max Power - 1800W Peak RMS Power Output @ 2Ω (subwoofer) - 500W x 1, <1% THD+N RMS Power Output @ 4Ω (subwoofer) - 320W x 1, <1% THD+N RMS Power Output @ 2Ω (full-range) - 65W x 4, <1% THD+N RMS Power Output @ 4Ω (full-range) - 45W x 4, <1% THD+N RMS Power Output @ 4Ω Bridged (full-range) - 130W x 2, <1% THD+N Signal-to-Noise Ratio (sub) - >80dB (ref 1W output @ 4Ω) Signal-to-Noise Ratio (full-range) - >80dB (ref 1W output @ 4Ω) Infinity Marine amplifiers feature a slim chassis and a small footprint to allow for installation in tight spaces. Speaker-level and low-level inputs let Infinity Marine amps integrate with just about any audio input. Infinity Marine amps feature selectable all-, high-, or low-pass crossovers with variable electronic frequency adjustment to allow for fine-tuning multiple system configurations. Infinity Marine amplifiers are engineered to withstand harsh marine conditions, with fully “marinized” circuit boards to ensure flawless power delivery, year after year. Onboard 12dB electronic crossovers, with selectable full-range, high-pass & low-pass switching, provide tuning options for systems of any size.