JL Audio MX500/1 Compact marine/powersports mono amplifier — 500 watts RMS x 1 at 2 ohms

Product info:

• marine/powersports mono amplifier
• 300 watts RMS x 1 at 4 ohms (500 watts RMS x 1 at 2 ohms)
• variable low-pass filter (40-400 Hz, 24 dB/octave)
• variable subsonic filter (20-40 Hz, 12 dB/octave)
• bass boost (0-12 db at 43 Hz)
• Class D amplifier design with NextD™ switching amp technology
• IPX7 water-resistance rating
• corrosion-resistant cast aluminum chassis
• 4-gauge power and ground leads and a 50-amp fuse recommended — wiring and hardware not included with amplifier
  
• no onboard fuses — when installing multiple amps in a system, an additional 50-amp in-line fuse between the distribution block and the amplifier is recommended
• 9-3/8"W x 1-13/16"H x 4-9/16"D