{"product_id":"4-channel-class-d-car-amplifier-1","title":"4-Channel Class D Car Amplifier","description":"The Alpine PDR-F50 is a 4-channel Class D car amplifier that redefines expectations in the high-power, compact amplifier category. It incorporates trickle-down technology from Alpine's leading PDX series to provide wide bandwidth, excellent signal-to-noise ratio, low distortion, and a high damping factor.\n\nThis amplifier boasts impressive power output: 85 watts RMS x 4 channels into 4 ohms, 125 watts RMS x 4 channels into 2 ohms, and 250 watts RMS x 2 channels when bridged into 4 ohms. It supports 4\/3\/2 channel operation and features speaker-level (high-level) inputs with signal sensing for automatic turn-on, making it versatile for integration with factory or aftermarket systems.\n\nFor precise tuning, the PDR-F50 includes variable crossovers for both high-pass and low-pass filters, adjustable from 50Hz to 400Hz with a 24 dB\/octave slope. It also offers a variable bass boost feature, allowing for 0 to +12 dB boost. Built-in thermal and current protection circuits safeguard the amplifier.\n\nWith its compact dimensions of 9\"W x 7.12\"L x 2.8\"H, the PDR-F50 is designed for easy installation in various locations. Alpine emphasizes that all PDR-Power amplifiers are individually tested and have certified power ratings, with each unit coming with a verification certificate confirming its actual power output exceeds the stated rating.","brand":"Alpine","offers":[{"title":"Default Title","offer_id":52686863335736,"sku":"PDR-F50","price":349.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/661165047.jpg?v=1784877672","url":"https:\/\/store.motormia.co\/products\/4-channel-class-d-car-amplifier-1","provider":"MOTORMIA","version":"1.0","type":"link"}