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Alpine 45-Watts RMS x 4-Channel Head-Unit Power-Pack Amplifier The KTP-445A Power Pack amplifies power output on select 2005 and newer Alpine head units, resulting in up to a 150 percent power increase over the original power from the head unit's built-in amplifier. 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. In order to ensure that Alpine sound quality is heard, Alpine 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. Features 45 Watts x 4 @ 4Ω For select 2005 and newer Alpine head units Compact size Specifications CEA-2006 Power Rating: 45W x 4 @ 4Ω/2Ω

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Alpine 45-Watts RMS x 4-Channel or 90-Watts x 2-Channel Universal Power-Pack Amplifier Add higher output and more dynamic response with this easy-to-install Universal Power Pack upgrade. Compact size lets the KTP-445U fit where most amplifiers won’t. The KTP-445U comes equipped with the RCA and Auto-Sensing-Speaker level connectors and it fits behind the head unit in the dash of most vehicles. It's small and compact at only 7-7/16” x 1-1/2” x 2-1/2”. The size and flexible wires make the Power Pack an easy choice to save space. High-Pass selectable switches for Front & Rear allow frequency filtering for a wide variety of speakers. Choose from full range to selectable range: 60Hz, 80Hz or 120Hz to fine-tune your crossover points. Need configurable options for Speaker-Level or RCA inputs to the Power Pack? On the bottom panel of the Power Pack there are selectable input options to accommodate Speaker-Level (0.5V-10V) or RCA (0.2V – 4V) inputs. Selectable 2 Channel and 4 Channel options give you the control to determine source inputs, and can eliminate the need for Y-adapters. The Power Pack provides simple variable gain controls on the end panel for flexibility and a wide variety of system applications. In order to ensure that Alpine sound quality is heard at your ears, 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. 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. Features 45 Watts x 4 @ 4Ω/2Ω 90 Watts x 2 @ 4Ω Bridged For aftermarket and factory installed systems Compact size Specifications CEA-2006 Power Rating: 45W x 4 @ 4Ω/2Ω 90 Watts x 2 @ 4Ω Bridged Alpine KTP-445U Manual

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