{"product_id":"hifonics-hcm-400-4d-four-channel-class-d-amplifier","title":"Hifonics HCM-400.4D Four-Channel Class D Amplifier","description":"\u003cp\u003eThe Hifonics COLOSSUS MINI HCM-400.4D is a compact four-channel amplifier designed to add dedicated power to a vehicle audio system without requiring a large mounting area. Its full-range Class-D design supports applications in cars, motorcycles, and UTVs. It provides four channels for powering speakers or can be configured for bridged operation.\u003c\/p\u003e\u003cp\u003eThis amplifier is suited to installers upgrading factory or aftermarket speaker systems where space is limited. It can power four speakers at up to 50 watts per channel at 4 ohms or 100 watts per channel at 2 ohms. For systems needing two higher-power channels, it supports two-channel bridged operation at 4 ohms.\u003c\/p\u003e\u003cp\u003eThe HCM-400.4D has a 10Hz-25kHz frequency response, allowing it to cover bass, midrange, and high-frequency duties in a full-range system. Variable high-pass and low-pass filters help tailor each channel pair to the speakers being used. Its adjustable 0.2-5V input sensitivity supports integration with a range of source-unit signal levels.\u003c\/p\u003e\u003cp\u003eHifonics uses a mass-loaded extruded aluminum heat sink to manage heat without fan cooling. Ultra-Fi MOSFET output devices, an air-core transformer, and multilayer PCB construction are part of the amplifier's compact design. Protection circuitry monitors over-voltage, under-voltage, short-circuit, and thermal conditions.\u003c\/p\u003e\u003cp\u003eThe amplifier can serve as the power stage for a four-speaker upgrade, or it can be bridged for a mixed system using two channels. Speaker-level inputs support integration where a dedicated RCA preamp signal is not available. A delayed turn-on function and included bass remote add useful setup and day-to-day control options.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour-Channel Class-D Design:\u003c\/strong\u003e Powers up to four speakers from a compact amplifier chassis.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50W x 4 at 4 Ohms:\u003c\/strong\u003e Provides dedicated power for compatible four-speaker systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-Ohm Capability:\u003c\/strong\u003e Delivers up to 100 watts per channel at 2 ohms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBridged Operation:\u003c\/strong\u003e Configures as two 200-watt channels at 4 ohms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Crossovers:\u003c\/strong\u003e Helps match the amplifier output to speaker roles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTriple Protection Circuits:\u003c\/strong\u003e Monitors voltage, short-circuit, and thermal operating conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDesign \u0026amp; Installation\u003c\/h3\u003e\u003cp\u003eThe HCM-400.4D uses a black, mass-loaded extruded aluminum heat sink with CNC-machined aluminum Hifonics and Colossus badges. Nickel-plated RCA jacks are designed for corrosion-resistant signal connections, while molded angled terminals organize power, ground, and speaker wiring. The amplifier measures 9.3 inches long, 5.28 inches wide, and 2.72 inches high.\u003c\/p\u003e\u003cp\u003eMount the amplifier on a secure surface with adequate ventilation and do not mount it upside down. The manufacturer specifies 4 AWG power and ground terminals, 12 AWG speaker terminals, and an external 40A fuse; the power cable should be fused within 18 inches of the battery. Use the high-pass and low-pass controls to match the connected speakers, set gain carefully to the source unit, and use only a 4-ohm load when bridging channels.\u003c\/p\u003e","brand":"Hifonics","offers":[{"title":"Default Title","offer_id":45631921520710,"sku":"HCM400-4D","price":218.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0048\/4163\/5910\/files\/61UF4U-_P7L.jpg?v=1784389321","url":"https:\/\/audiowatt.store\/products\/hifonics-hcm-400-4d-four-channel-class-d-amplifier","provider":"Audio Watt Store","version":"1.0","type":"link"}