Alpine KTP-445A, Power Pack 4 Channel Amplifier for Alpine Receiver - 180 Watts

COMPACT Compact size lets the KTP-445A fit where most amplifiers won’t. The KTP-445A comes equipped with direct plug-in connectors for select 2005 and newer Alpine head units and it fits behind the dash of most vehicles. It's small and compact at only 7-7/16” x 1-1/2” x 2-1/2”. Its size and flexible wires make the Power Pack an easy choice to save space. BEST SIGNAL-TO-NOISE CONTENDER IN ITS CLASS In order to ensure that Alpine sound quality is heard, we’ve created a platform that offers an unbelievably low noise floor, taking extra care to ensure a clean signal path, with no extraneous interference. The end result: The Power Pack boasts 1 Watt Signal-to-Noise Ratio of 82dB or better. Total Harmonic Distortion (THD+N) vs. Frequency Uniquely, the Power Pack distortion actually decreases at higher frequencies, resulting in a clean and clear signal where your ear is most sensitive to distortion. - <0.03% THD+N @ 1W, 1% THD+N @ rated power. | Number of Channels 4 Class D Peak Power Rating (Watts) 90x4 RMS Power Rating (Watts x Channels) - 4 Ohms 45 x 4 RMS Power Rating (Watts x Channels) - 2 Ohms 45 x 4 RMS Power Rating - Bridged N/A Minimum Impedance Unbridged (Ohms) 2 Minimum Impedance Bridged (Ohms) N/A THD at Rated RMS Power 1% Bulit-in Crossover - Low Pass Yes Built-in Crossover - High Pass N/A High Pass Crossover Frequency (Hz) N/A Low Pass Crossover Frequency (Hz) N/A Signal-to-Noise Ratio 80dB Bass Boost No Bass Remote Included No Fuse Rating 15A CEA-2006 Compliant Yes Maximum Power Wire Gauge Size N/A Warranty 1 Year