HD600/4

4 Ch. Class D Full-Range Amplifier, 600 W

Product highlights:

• Featured in our article: Best 4-channel car amplifiers for 2025
• 4-channel amplifer
• 150 watts RMS x 4 (rated power from 1.5 to 4 ohms)
• 300 watts RMS x 2 bridged (rated power from 3 to 8 ohms)
• variable high- and low-pass filter (50-500 Hz 12 or 24dB/octave)
• subsonic filter and output polarity control
• removable power and speaker plugs
• optional wired remote for level control
• optional HD stacking kit for stacking multiple HD amps together
• Class D amplifier design
• MOSFET power and output stages
• differential-balanced inputs eliminate noise from your vehicle's electrical system
• speaker- and preamp-level inputs (speaker-level input requires an optional adapter)
• preamp outputs
• 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
• 10-13/16"W x 2"H x 8-7/8"D
• warranty: 2 years

What's in the box: