Alpine KTP-445A new Plug & Play amplifier of the year 2013.
The KTP-445A is a 4 x 45W (RMS power) amplifier that is very easy and quick to install. This compact amplifier plugs directly into the Alpine player's wiring harness and does not require any separate cabling. NOTE! Not suitable for IVE-W530BT directly.
The KTP-445A is compatible with all 2005 and later Alpine players (except CDE-100EUB and CDE-120R).
Can also be used with PXA-H100.
Power: 4 x 100W (Max.)
Power: 4 x 45W (Continuous power) 4ohm.
S / N ratio: 84 dBA (ref: 1W @ 4ohm)
Very compact size
http://www.youtube.com/watch?v=SBoRTS3FAHM&list=UUlmNjT4ugOjqfRCWHRew-rw&index=28