{"product_id":"hifonics-bxx800-4-4-channel-class-ab-car-audio-amplifier","title":"Hifonics BXX800.4 4-Channel Class AB Car Audio Amplifier","description":"\u003cp\u003eThe Hifonics BXX800.4 is a four-channel Class AB car audio amplifier designed to add dedicated power to aftermarket speakers. It can be used to drive a full set of front and rear speakers, or configured in bridged pairs for higher-output applications. Its 2-ohm stereo stability provides flexibility when matching compatible speakers.\u003c\/p\u003e\u003cp\u003eThis amplifier is suited to vehicle owners upgrading beyond head-unit power and seeking more control over speaker output. It provides 100 watts RMS per channel at 4 ohms or 200 watts RMS per channel at 2 ohms. For bridged use, it is rated at 400 watts RMS per pair into 4 ohms.\u003c\/p\u003e\u003cp\u003eThe BXX800.4 uses a Class AB output stage with a MOSFET power supply and Ultra-Fi MOSFET output devices. This architecture is paired with an aluminum heat sink to help manage heat during operation. Three-way protection circuitry and illuminated status indicators assist with monitoring overload and speaker-short conditions.\u003c\/p\u003e\u003cp\u003eSeparate crossover controls for channel pairs 1\/2 and 3\/4 allow the amplifier to be tailored to full-range speakers, component systems, or selected bridged applications. Each channel pair offers selectable high-pass, full-range, and low-pass operation. Adjustable high-pass and low-pass filters, plus bass boost, support practical system tuning.\u003c\/p\u003e\u003cp\u003eRCA inputs accommodate a compatible aftermarket receiver or other source with preamp outputs, while RCA outputs allow signal pass-through to another amplifier. A 2-channel or 4-channel input mode supports systems with either two or four input channels. This makes the BXX800.4 a practical foundation for a multi-speaker vehicle-audio upgrade.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour-Channel Output:\u003c\/strong\u003e Powers four speakers or two bridged channel pairs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass AB Design:\u003c\/strong\u003e Uses a Class AB amplifier topology and MOSFET circuitry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-Ohm Stereo Stability:\u003c\/strong\u003e Delivers up to 200 watts RMS per channel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelectable Crossovers:\u003c\/strong\u003e Separately tunes channels 1\/2 and 3\/4.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRCA Signal Connections:\u003c\/strong\u003e Includes RCA inputs and pass-through RCA outputs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection Monitoring:\u003c\/strong\u003e Uses protection circuitry with power and protect indicators.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDesign \u0026amp; Installation\u003c\/h3\u003e\u003cp\u003eThe BXX800.4 has an aluminum heat sink intended to reduce heat buildup, plus molded and angled connection areas for cable access. Nickel-plated RCA jacks are used for the low-level signal connections. LED power and protect indicators are located on the amplifier for basic system-status monitoring.\u003c\/p\u003e\u003cp\u003eInstall the amplifier in a secure, dry, ventilated location and use power and ground cable up to 4 AWG at its terminals. Speaker terminals accept wire up to 12 AWG, and the amplifier uses two onboard 25A fuses. Match speakers to the rated impedance, use a 4-ohm load for bridged channel pairs, and set gain and crossover controls after all wiring is complete.\u003c\/p\u003e","brand":"Hifonics","offers":[{"title":"Default Title","offer_id":45631919423558,"sku":"BXX800-4","price":238.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0048\/4163\/5910\/files\/71qD48IAnbL.jpg?v=1784388284","url":"https:\/\/audiowatt.store\/products\/hifonics-bxx800-4-4-channel-class-ab-car-audio-amplifier","provider":"Audio Watt Store","version":"1.0","type":"link"}