JL Audio AP300/1 Amplifier 300 Watt MonoblockModel: 010-03428-00Features:300-WATT MONOBLOCK AMPLIFIER: This monoblock amplifier is specifically designed to power a subwoofer.EASY TUNE FEATURE: For additional optimization, pair with a Fusion stereo with built-in DSP, and download the Fusion Audio app for selectable profiles. This enables the Easy Tune feature, which streamlines amplifier setup to ensure superior sound quality and system protection.CLASS-D AMPLIFIER TECHNOLOGY: The highly efficient Class-D design provides lower battery drain with a higher output than Class-AB amplifiers. This delivers increased power to the connected speakers/subwoofers for an enhanced level of audio performance.RUGGED DESIGN: These amplifiers offer superior levels of durability and are built to IP67 standards (excluding cables) to withstand abuse in harsh marine environments.With these tough and ultracompact amplifiers, you can enjoy every note from every part of your boat.SpecificationsGeneralChannelsMonoblockPhysical dimensions (Height)1.86″ (47 mm)Physical dimensions (Width)10.43″ (265 mm)Physical dimensions (Depth)4.90″ (125 mm)Operating voltage9-16 VDCWater and dust ratingIP67Operating temperature range4 to 149 F (-20 to 65 C)Warranty3 yearsAudioRated continuous (RMS) power (14.4 V input @ 4 Ohm less than 1% THD)200 W x 1Rated continuous (RMS) power (14.4 V input @ 2 Ohm less than 1% THD)350 W x 1Signal-to-Noise Ratio, referred to 1 W (A-weighted, 20 Hz – 20 kHz noise bandwidth): Analog InputsGreater than 70 dBFrequency response (+0, -1dB)10 Hz-500 HzInput sensitivity @ RCA inputsSwitchable from 200 mV-2 V RMS (Low) to 800 mV-8 V RMS (High)Current consumption (Standby)700-750mAFuse rating35ARecommended fuse type(s)AFS, AGU or MaxiFuseMin. copper power/Ground wire gauge4 AWG wireProtection circuitsInput under/over voltage Over temperature Output short circuitWhat’s in the Box:JL Audio AP amplifierFour mounting screwsDocumentation