This Audiopipe APHD3000DH1 is a 3000watt amplifier built on a mini chassis to provide serious power in a tight space. This amp is a mono block amplifier that is stable at 1 ohm and comes with an inline fuse and visual status monitor For the size, quality, and power this amp is hard to beat. Features. Marine Boat Speakers. Rubber Surround Piano Black IMPP Cone. Silk Dome Diaphragm High Performance Tweeter. Titanium Dome Diaphragm High Performance Tweeter. 8 350 Watt 2Way Coaxial Marine SpeakerSpecifications. Color White. Size 8 in.. RMS Power 175 Watts. P.M.P.O Power 350 Watts. Frequency Response 4525 kHz. Sensitivity 90 dB. Impedance 4 Ohms. Mounting Depth 90 mm 3 . Magnet 22 Oz.