Excellent amp to my existing factory radio. My radio is 300% clear and loud with gain turned down to zero for my factory speakers.
I have a alpine 9425 &6×9 Rs nothing but awsome,No
from Inkster, MI
I have loved my 9428 and 6×9 for about 10 yes. Time to HD149BT & 6×9R the processors are top notch have to get more, but Im on ssi so 1 peace at a time. Please never change. I will only buy Alpint. Thank you. Always wanted you cence I was a young boy. Thanks for all the great music.
from houston, TX
Easy install, fit in glove box, 4 channel amp improved the output of the Pioneer 4100NEX head unit with RCA plugs. After setting the optimal level gain, the sound was full and rich. Using Kicker aftermarket in front and rear.
Alpine KTP-445U Power Pack
from Madelia, MN
This Alpine power pack rocks! It pushes way more power to my door speakers than my in dash receiver did and definitely makes a difference in sound quality. It's small and compact and actually mounted behind my double-din in dash receiver so it's a clean install and hidden. I this in my 2012 Chevy Colorado powering my 4 door speakers and I am definitely impressed with the difference this Alpine makes. If I had to purchase it again I would no doubt.
Small but powerful
2015 Toyota Tundra Crewmax
from columbia, MD