AlpineKTA-450 4-Channel Power Pack Amplifier and Voxx HD Backup Camera Upgrade Bundle for Alpine iLX-W650 Receivers (Not Included) with PowerStack Connecting Bracket. Combined Depth Under 5"

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I can hear sounds in music I didn’t even know were there. Makes everything clearer as far as vocals and tones. I have the 650 receiver that this pairs with, and all Alpine speakers. The receiver was good alone and then I saw this was another part to it. Then I added an Alpine tube subwoofer and another amp to power that. The bass tied everything together perfectly. I’d say I paid less than $600 for everything because of sales, plus this amp came with a camera that’s decent enough..there’s lines through the screen. I’ll replace that because now it’s bothering me. Best Buy installed everything free. Overall very satisfied and now my brother is jealous.

I've been messing with this thing for almost a year and the return window is closed. Finding similar reviews regarding intermittent power problems. Disappointed in Alpine quality and design of this item and will avoid any future purchases from this once premier brand.

Quality product & plenty of power. The only issue I had was with the backup camera not working.

I’m very happy with my purchase, it gets my speakers more power and louder without distorting

Installed the amp and only one side worked and made some weird noise.

It fit perfect to the radio and is easily hidden behind the dash

Big sound for such a small amp!