Alpine KTP-445A KTP-445 Head Unit in Line Power Amplifier, Black

Alpine head units have a built in amplifier but this provides the missing depth to the music and is an easy plug and play fit. It is small but don't agree that it will fit behind the radio, certainly not in a BMW e30 where dash space is limited. You can tell the amp is working by the improved sound quality as there is no other indication like a light to show it is on. All in all, a very handy little amp which can be discreetly hidden and it delivers..

Easy to install if your swapping your 'Stereo' system and effectively ups your system but you may have to update your speakers if you want to use at max volume.

I got this amp together with alpine UTE92BT head unit, and jbl Club component 16.5x4Spekers, i wanted small ,compact and less wiring as possible to hide it behind the dash. I''m really impressed with the quality sound of this amp for such a small "brick". I will rate this amp at only 4 stars bcz i had several problems having to do with the power supply from car OEM that comes in line with the head unit, after one week of intense use the OEm fuse blown bcz I am a heavy listener and at high volumes amp needs more power(amps) the 18awg car oem wiring was unable to deliver the minimum 25amps needed for the amp and head unit so voltage drop happen ,after 22volume (from 35) a kinda protection was coming on and volume was automatically dropping at 7level. So what i did I''ve upgrade the constant12v and ground with 12awg from the battery and went to amp iso to connect it(you need to cut old wire and isolate maybe in the future you might solder back). I have to say that i can go over 18volume level bcz is much louder after wire upgrade and no protection coming on at high sound levels. Very very happy with the outcome 😊☺️ small, compact and quality sound.Also if i have to buy it again i will go for the other version ktp445U as you can put proper wiring and also better sound quality. I hope that this review will help others to know the pro and cons for this amp. Also head unit and amp very good combo high quality and Manny functions. I wrote this kind review cuz i was looking for this kind of experience and i didn't find anything hope to help others to enjoy good quality sound.