{"product_id":"ktp-445u","title":"KTP-445U","description":"\u003cp data-start=\"79\" data-end=\"551\"\u003eThe Alpine KTP-445U Universal Power Pack is one of the most popular compact amplifier upgrades in car audio, designed to dramatically improve the sound quality and output of factory or aftermarket head units without requiring a large traditional amplifier installation. Delivering up to 45 watts RMS x4, the KTP-445U provides up to a 150% power increase over standard radio power while fitting neatly behind the dash in most vehicles. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"553\" data-end=\"871\"\u003eFeaturing both RCA and speaker-level inputs, adjustable gain controls, selectable high-pass filters, and ultra-compact dimensions, the KTP-445U is perfect for powering aftermarket door speakers, motorcycle audio systems, OEM+ upgrades, and stealth installs where space is limited. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"19zqy0x\" data-start=\"873\" data-end=\"885\"\u003eFeatures\u003c\/h3\u003e\n\u003cul data-start=\"886\" data-end=\"1366\"\u003e\n\u003cli data-section-id=\"1n7u4hs\" data-start=\"886\" data-end=\"929\"\u003eUltra-compact 4-channel Class-D amplifier\u003c\/li\u003e\n\u003cli data-section-id=\"8b0fgz\" data-start=\"930\" data-end=\"972\"\u003eWorks with factory or aftermarket radios\u003c\/li\u003e\n\u003cli data-section-id=\"ifhtmw\" data-start=\"973\" data-end=\"1026\"\u003eUp to 150% power increase over factory radio output\u003c\/li\u003e\n\u003cli data-section-id=\"1aucczf\" data-start=\"1027\" data-end=\"1055\"\u003eRCA \u0026amp; speaker-level inputs\u003c\/li\u003e\n\u003cli data-section-id=\"1tlkrpg\" data-start=\"1056\" data-end=\"1091\"\u003eAuto-sensing speaker-level inputs\u003c\/li\u003e\n\u003cli data-section-id=\"16rfyqf\" data-start=\"1092\" data-end=\"1139\"\u003eSelectable 2-channel or 4-channel input modes\u003c\/li\u003e\n\u003cli data-section-id=\"1ikb8vd\" data-start=\"1140\" data-end=\"1179\"\u003eAdjustable front \u0026amp; rear gain controls\u003c\/li\u003e\n\u003cli data-section-id=\"1a0w46z\" data-start=\"1180\" data-end=\"1220\"\u003eSelectable high-pass crossover filters\u003c\/li\u003e\n\u003cli data-section-id=\"4zyoa3\" data-start=\"1221\" data-end=\"1251\"\u003eBridgeable channel operation\u003c\/li\u003e\n\u003cli data-section-id=\"y6dbdb\" data-start=\"1252\" data-end=\"1293\"\u003eBehind-the-dash installation capability\u003c\/li\u003e\n\u003cli data-section-id=\"1gnaqdh\" data-start=\"1294\" data-end=\"1332\"\u003eLow noise floor \u0026amp; clean sound output\u003c\/li\u003e\n\u003cli data-section-id=\"1y3hkto\" data-start=\"1333\" data-end=\"1366\"\u003ePerfect for OEM+ sound upgrades\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1yl5694\" data-start=\"1368\" data-end=\"1386\"\u003eSpecifications\u003c\/h3\u003e\n\u003cul data-start=\"1387\" data-end=\"1867\"\u003e\n\u003cli data-section-id=\"10vxi1p\" data-start=\"1387\" data-end=\"1477\"\u003eRMS Power Output:\n\u003cul data-start=\"1409\" data-end=\"1477\"\u003e\n\u003cli data-section-id=\"qq57b3\" data-start=\"1409\" data-end=\"1427\"\u003e45W x 4 @ 4 Ohms\u003c\/li\u003e\n\u003cli data-section-id=\"muol4p\" data-start=\"1430\" data-end=\"1448\"\u003e45W x 4 @ 2 Ohms\u003c\/li\u003e\n\u003cli data-section-id=\"66hbhm\" data-start=\"1451\" data-end=\"1477\"\u003e90W x 2 Bridged @ 4 Ohms\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"p15k7x\" data-start=\"1478\" data-end=\"1508\"\u003eAmplifier Class:\n\u003cul data-start=\"1499\" data-end=\"1508\"\u003e\n\u003cli data-section-id=\"91bhqn\" data-start=\"1499\" data-end=\"1508\"\u003eClass-D\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"cbs5bf\" data-start=\"1509\" data-end=\"1547\"\u003eFrequency Response:\n\u003cul data-start=\"1533\" data-end=\"1547\"\u003e\n\u003cli data-section-id=\"1qijbxt\" data-start=\"1533\" data-end=\"1547\"\u003e15Hz – 50kHz\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"nhps1a\" data-start=\"1548\" data-end=\"1591\"\u003eSignal-to-Noise Ratio:\n\u003cul data-start=\"1575\" data-end=\"1591\"\u003e\n\u003cli data-section-id=\"1co1gp\" data-start=\"1575\" data-end=\"1591\"\u003e82dB or better\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"19aui9q\" data-start=\"1592\" data-end=\"1642\"\u003eTotal Harmonic Distortion:\n\u003cul data-start=\"1623\" data-end=\"1642\"\u003e\n\u003cli data-section-id=\"1hl5cn\" data-start=\"1623\" data-end=\"1642\"\u003e\u0026lt;0.03% THD+N @ 1W\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"17kdbyr\" data-start=\"1643\" data-end=\"1713\"\u003eHigh-Pass Filter Options:\n\u003cul data-start=\"1673\" data-end=\"1713\"\u003e\n\u003cli data-section-id=\"sntz6s\" data-start=\"1673\" data-end=\"1685\"\u003eFull Range\u003c\/li\u003e\n\u003cli data-section-id=\"1j2f61o\" data-start=\"1688\" data-end=\"1694\"\u003e60Hz\u003c\/li\u003e\n\u003cli data-section-id=\"1j24e4y\" data-start=\"1697\" data-end=\"1703\"\u003e80Hz\u003c\/li\u003e\n\u003cli data-section-id=\"15b6n55\" data-start=\"1706\" data-end=\"1713\"\u003e120Hz\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"35gx0r\" data-start=\"1714\" data-end=\"1783\"\u003eInput Sensitivity:\n\u003cul data-start=\"1737\" data-end=\"1783\"\u003e\n\u003cli data-section-id=\"t8131l\" data-start=\"1737\" data-end=\"1753\"\u003eRCA: 0.2V – 4V\u003c\/li\u003e\n\u003cli data-section-id=\"7nwmsr\" data-start=\"1756\" data-end=\"1783\"\u003eSpeaker-Level: 0.5V – 10V\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"k3d3yu\" data-start=\"1784\" data-end=\"1837\"\u003eDimensions:\n\u003cul data-start=\"1800\" data-end=\"1837\"\u003e\n\u003cli data-section-id=\"1gami9z\" data-start=\"1800\" data-end=\"1811\"\u003e7-7\/16” W\u003c\/li\u003e\n\u003cli data-section-id=\"10a9zsd\" data-start=\"1814\" data-end=\"1824\"\u003e1-1\/2” H\u003c\/li\u003e\n\u003cli data-section-id=\"h9jkle\" data-start=\"1827\" data-end=\"1837\"\u003e2-1\/2” D\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1qs43qk\" data-start=\"1838\" data-end=\"1867\"\u003eWeight:\n\u003cul data-start=\"1850\" data-end=\"1867\"\u003e\n\u003cli data-section-id=\"us2oc1\" data-start=\"1850\" data-end=\"1867\"\u003eApprox. 3.3 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Alpine","offers":[{"title":"Default Title","offer_id":47219135086741,"sku":"210000004466","price":289.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/3815\/6949\/files\/g500KTP445U-o_powerpack.webp?v=1779220225","url":"https:\/\/slanginsound.com\/products\/ktp-445u","provider":"Slangin Sound and Tint","version":"1.0","type":"link"}