In Phase Car Audio IPA5001D 1 Ohm Stable Monoblock Subwoofer Amplifier, 5000 Watts, Black

NEW RANGE: In Phase is possibly one of the best car amplifiers available today BRITISH DESIGN: All In Phase amps are designed in the UK GREAT AUDIO EXPERIENCE: In Phase create a sound that is right for you IMPROVED CIRCUIT DESIGN: To prevent circuit shutdown, In Phase's new digital amplifier circuit, senses its internal temperature and automatically moderates input level accordingly LOW PASS FILTER: For extra flexibility, a variable LPF makes audio frequency more adjustable according to subwoofer characteristics and personal listening preferences