{"product_id":"soundstream-psa5-4000d","title":"Soundstream PSA5-4000D Marine 5-Channel Amplifier","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Soundstream PSA5-4000D is a five-channel amplifier designed for marine, motorcycle and powersport audio installations. Its IP66-rated enclosure and built-in protection circuits address use in demanding environments, while adjustable filtering helps match the amplifier to the connected speakers or subwoofers. The dedicated subwoofer channel allows the five-channel model to drive a combined speaker-and-bass system.\u003c\/p\u003e\u003ch2\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\u003cul\u003e\u003cli\u003eIP66-rated housing\u003c\/li\u003e\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eIP66-rated enclosure; not a submersion rating\u003c\/li\u003e\n\u003cli\u003ePWM MOSFET power supply\u003c\/li\u003e\n\u003cli\u003eShort-circuit, thermal and overload protection\u003c\/li\u003e\n\u003cli\u003eFull-range Class D design\u003c\/li\u003e\n\u003cli\u003eFour speaker channels plus dedicated subwoofer channel\u003c\/li\u003e\n\u003cli\u003eRMS at 4 ohms: 100W × 4; no 4-ohm sub rating supplied in observed panel\u003c\/li\u003e\n\u003cli\u003eRMS at 2 ohms: 150W × 4 + 450W × 1\u003c\/li\u003e\n\u003cli\u003eSubwoofer RMS at 1 ohm: 650W × 1\u003c\/li\u003e\n\u003cli\u003eLow-level RCA input range: 200mV–8V\u003c\/li\u003e\n\u003cli\u003e12dB high-pass and low-pass filters: 50–500Hz\u003c\/li\u003e\n\u003cli\u003eSubsonic filter: 10–50Hz\u003c\/li\u003e\n\u003cli\u003eSubwoofer low-pass filter: 40–250Hz\u003c\/li\u003e\n\u003cli\u003eBass boost: 0–12dB\u003c\/li\u003e\n\u003cli\u003e8-gauge power\/ground and 12-gauge speaker terminals\u003c\/li\u003e\n\u003cli\u003eDimensions: 5.25 inches W × 2 inches H × 12.25 inches L\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\u003cp\u003eThe PSA5.4000D is a starting point for a multi-channel speaker layout, where channel arrangement and output at the actual connected load matter more than a headline maximum-power number. Compare the ratings above with the continuous requirements of the speakers you plan to use. Keeping those decisions together helps avoid buying an amplifier that is powerful on paper but wrong for the installation. For this model, the listed feature set includes IP66-rated housing. Check how that feature fits your intended system rather than substituting specifications from a similar model.\u003c\/p\u003e\u003ch2\u003eInstallation \u0026amp; Compatibility Notes\u003c\/h2\u003e\u003cp\u003eMatch the amplifier to the final impedance of your wired speakers or subwoofers. Compare continuous RMS ratings at that load rather than treating maximum power as continuous output. Plan appropriate power wire, fusing, grounding and ventilation for the installation. Use installation methods appropriate for the manufacturer’s specified water resistance; water resistance does not make every wiring connection waterproof.\u003c\/p\u003e\u003ch3\u003eDesign and installation details\u003c\/h3\u003e\u003cp\u003eThe Soundstream PSA5-4000D is a five-channel amplifier designed for marine, motorcycle and powersport audio installations. Its IP66-rated enclosure and built-in protection circuits address use in demanding environments, while adjustable filtering helps match the amplifier to the connected speakers or subwoofers. The dedicated subwoofer channel allows the five-channel model to drive a combined speaker-and-bass system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIP66-rated enclosure; not a submersion rating\u003c\/li\u003e\n\u003cli\u003ePWM MOSFET power supply\u003c\/li\u003e\n\u003cli\u003eShort-circuit, thermal and overload protection\u003c\/li\u003e\n\u003cli\u003eFull-range Class D design\u003c\/li\u003e\n\u003cli\u003eFour speaker channels plus dedicated subwoofer channel\u003c\/li\u003e\n\u003cli\u003eRMS at 4 ohms: 100W × 4; no 4-ohm sub rating supplied in observed panel\u003c\/li\u003e\n\u003cli\u003eRMS at 2 ohms: 150W × 4 + 450W × 1\u003c\/li\u003e\n\u003cli\u003eSubwoofer RMS at 1 ohm: 650W × 1\u003c\/li\u003e\n\u003cli\u003eLow-level RCA input range: 200mV–8V\u003c\/li\u003e\n\u003cli\u003e12dB high-pass and low-pass filters: 50–500Hz\u003c\/li\u003e\n\u003cli\u003eSubsonic filter: 10–50Hz\u003c\/li\u003e\n\u003cli\u003eSubwoofer low-pass filter: 40–250Hz\u003c\/li\u003e\n\u003cli\u003eBass boost: 0–12dB\u003c\/li\u003e\n\u003cli\u003e8-gauge power\/ground and 12-gauge speaker terminals\u003c\/li\u003e\n\u003cli\u003eDimensions: 5.25 inches W × 2 inches H × 12.25 inches L\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003ePlan the power and ground paths, circuit protection and mounting location before connecting the amplifier. Leave the controls accessible, protect wiring where it passes through panels and allow ventilation around the chassis. Set input sensitivity to the source signal rather than treating the gain control as extra volume. For a marine installation, use suitable corrosion-resistant connections and protected mounting; a marine product label is not permission to submerge it.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhat continuous output is listed for the PSA5.4000D?\u003c\/h3\u003e\u003cp\u003eRMS at 4 ohms: 100W × 4; no 4-ohm sub rating supplied in observed panel. Match the connected load to the stated rating and distinguish continuous RMS output from maximum power.\u003c\/p\u003e\u003ch3\u003eWhat input feature is specified for the PSA5.4000D?\u003c\/h3\u003e\u003cp\u003eLow-level RCA input range: 200mV–8V. Confirm that the source’s connection type and signal level meet the requirements of this model before wiring it.\u003c\/p\u003e\u003ch3\u003eWhat filtering feature does the PSA5.4000D offer?\u003c\/h3\u003e\u003cp\u003e12dB high-pass and low-pass filters: 50–500Hz. Use that control as part of a complete crossover and gain setup for the connected equipment.\u003c\/p\u003e\u003ch3\u003eWhat environmental rating is listed for the PSA5.4000D?\u003c\/h3\u003e\u003cp\u003eThe model lists an IP66-rated housing. Install it with protected connections and appropriate ventilation; do not treat that rating as permission for submersion.\u003c\/p\u003e\u003ch3\u003eHow should I choose speakers for the PSA5.4000D?\u003c\/h3\u003e\u003cp\u003eMatch the amplifier’s documented RMS rating and supported load to the combined speaker wiring. Do not assume a bridged or lower-impedance configuration is supported unless it is explicitly specified for this model.\u003c\/p\u003e\u003ch2\u003eExplore More\u003c\/h2\u003e\u003cp\u003eCompare \u003ca href=\"\/collections\/marine-multi-channel-amplifiers\"\u003eMarine Multi-Channel Amplifiers\u003c\/a\u003e or read our \u003ca href=\"\/pages\/soundstream\"\u003eSoundstream brand guide\u003c\/a\u003e. Need help matching components? \u003ca href=\"\/pages\/contact\"\u003eContact 12 Volt Outlet\u003c\/a\u003e with your vehicle, current equipment and installation goals.\u003c\/p\u003e","brand":"Soundstream","offers":[{"title":"Default Title","offer_id":68037345607908,"sku":"PSA5.4000D","price":259.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0842\/2522\/9028\/files\/PSA5-4000D_01.jpg?v=1793378304","url":"https:\/\/www.12voltoutlet.com\/products\/soundstream-psa5-4000d","provider":"12 Volt Outlet","version":"1.0","type":"link"}