{"product_id":"b2-audio-4ch-1200w-sq-amplifier-4-ohm-bridgeable-class-a-b-ref-four","title":"B2 Audio 4CH 1200W SQ Amplifier 4-ohm Bridgeable Class A\/B Ref Four","description":"\u003cul\u003e\n\u003cli\u003eFull-range Class A\/B amplifier with 4-channel output for high-fidelity car audio\u003c\/li\u003e\n\u003cli\u003eDelivers up to 1200W RMS bridged at 4 ohms or 4 x 300W RMS at 2 ohms\u003c\/li\u003e\n\u003cli\u003eBuilt-in 24 dB\/oct crossover, bass boost, and high\/low pass filters for precise tuning\u003c\/li\u003e\n\u003cli\u003eRugged construction with 0-gauge power terminals and compact 16.42\" x 6.30\" x 2.52\" size\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eB2 Audio 4CH 1200W SQ Amplifier 4-ohm Bridgeable Class A\/B Ref Four \u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eThis listing includes:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003e(1) B2 Audio REF FOUR 4-Channel Class A\/B Amplifier\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003eThe B2 Audio REF FOUR is a robust, full-range 4-channel amplifier built with Class A\/B topology for audiophiles who demand sound quality, headroom, and flexibility. With a wide frequency response of 15 Hz to 25 kHz, the REF FOUR delivers clean, controlled power across the entire audible spectrum. It features advanced crossover options, bass EQ boost, monitoring system with clipping indicators. Capable of pushing 4 x 300W RMS at 2 ohms or 2 x 1200W RMS bridged at 4 ohms, this amplifier is ready for both daily systems and competition-grade builds. Its rugged build, 0-gauge power terminals, and efficient layout make it a premium choice for high-performance installations.\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003eModel: REF FOUR\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eCircuit Configuration: Class A\/B\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eFrequency Response: 15 Hz – 25 kHz\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eSignal to Noise Ratio: \u0026gt;90 dB\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eInput Sensitivity: 6 V – 0.3 V\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eCrossover Circuit: 24 dB\/Oct\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eLow Pass Crossover: 40 Hz – 400 Hz\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eHigh Pass Crossover: 40 Hz – 4 kHz\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eBass EQ: 45 Hz \/ 0–12 dB\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003ePower Terminal Gauge: 0 Gauge \/ 67 mm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eFuse Rating: 150 A\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eDimensions (All in Inches): 16.42\" (Length) x 6.30\" (Width) x 2.52\" (Height)\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eContinuous Output Power (RMS) @ 14.4V 1% THD:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003e4 Ohm: 4 x 200W RMS\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003e2 Ohm: 4 x 300W RMS\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003e4 Ohm Bridged: 2 x 1200W RMS\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003ePower Supply Requirements:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003eMinimum Battery (AGM): 75 Ah \/ 1000 CCA\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eLithium Battery: 20 Ah minimum\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eMeasurements:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003eLength:  18\"\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eWidth:    6.5\"\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eHeight:   3\"\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e","brand":"B2 Audio","offers":[{"title":"Default Title","offer_id":43068070395971,"sku":"B2-REF-FOUR","price":699.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0637\/9575\/7123\/files\/581f13b5a9b48cb69eb8cfcd7cb7509e98221aaeea15bfc5cdc81cd1452687fa.jpg?v=1774455527","url":"https:\/\/www.trinitycaraudio.com\/products\/b2-audio-4ch-1200w-sq-amplifier-4-ohm-bridgeable-class-a-b-ref-four","provider":"TrinityCarAudio","version":"1.0","type":"link"}