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The die-hard purists at Rockford Fosgate spent over a million bucks to bring space-age Discrete Surface Mount technology to their factory in the Arizona desert. The higher speed, precision and efficiency of computer-controlled robotics means they can build more watts into their amps, without raising prices.

Case in point: MEHSA (Maximum Efficiency Heat Sink Application) mounting technology, which increases the heat transfer from the MOSFET output devices to the heat sink. And when the MOSFETs run cooler, it means the engineers can design in more watts per cubic inch. So you get more power output and increased component reliability, without paying more for it.

The Punch 800a2 features low-pass/high-pass crossovers variable from 50-210 Hz, eliminating the need to buy an outboard crossover. For extra low-end kick, Punch bass dials in up to 18 dB of boost at 45 Hz. Speaker-level inputs simplify amp installation if your radio doesn't have preamp outputs.

  • stereo, bridged mono, or Tri-Way output
  • 800 watts x 1 in bridged mode
  • 400 watts x 2 at 2 ohms
  • DSM technology
  • TOPAZ noise-killing differential inputs eliminate 80% of ground loop noise between the head unit and the amp
  • MEHSA mounting technology
  • NOMAD advanced protection circuitry monitors temperature, voltage, current and impedance, and provides "intelligent" shut-down protection without limiting system performance
  • TRANS-ana circuit designs keep voltages low and signal paths simple in the pre-amp section, for minimum distortion and maximum musicality
  • INDIGO guarantees the highest possible power output under all conditions, by leaving the power supply unregulated at high input voltages (engine running), and loosely-regulated at lower voltages (engine off, drawing on your battery)
  • speaker-level inputs
  • 100 dB signal-to-noise ratio
  • low-pass/high-pass crossovers variable from 50-210 Hz
  • Punch bass variable 0-18 dB at 45 Hz
  • 60 amp fuse (not included)
  • 18-5/16"W (15-3/16" w/o endcaps) x 2-11/16"H x 9-11/16"L
  • 3-year warranty

Rockford Fosgate Punch 800a2 Reviews

Hands-on research

What's in the box?

Download owner's manual

  • Black amplifier with silver colored trim and attached endcaps; 4 self-tapping mounting screws; 8 screws for screw terminals; 2 Allen wrenches (9/64" and 3/32"); Molex speaker level input harness with 8" wires; Team Rockford sticker; Manual with warranty information; Addendum to manual (corrects specifications); Punch verification certificate

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More Specifications

Inputs & Outputs

Note: Requires a 60 amp fuse which is not supplied with the amplifier!

More Specifications

Dynamic Power Rating - measured at 14.4 volts:

  • Mono into a 4 ohm load: 960 watts x 1

  • Per channel into a 2 ohm load: 480 watts x 2

  • Per channel into a 4 ohm load: 240 watts x 2

Continuous Power Rating - measured at 13.8 Battery Volts:

  • 4 ohm, 20-20k, less than .05% THD; both channels driven: 200 watts x 2
  • 2 ohm, 20-20k, less than .1% THD; both channels driven: 400 watts x 2
  • 4 ohm, 20-20k, less than .1% THD; mono: 800 watts x 1

Minimum recommended impedance load is 2 ohms in stereo mode and 4 ohms in bridged (mono) loads


Die Cast Heatsink: Dissipates heat for up to 30% improvement in cooling over conventional heatsink design

MEHSA: Maximum Efficiency Heat Sink Application allows greater power output and maximum reliability

Trans Ana circuitry for a simpler signal path resulting in better performance

Topaz: Tracking Operation Pre-Amplifier Zone: Eliminates ground loops thus eliminating 80% of noise problems

DSM: Discrete Surface Mount uses high speed robotics manufacturing process which uses 0% tolerance resistors and large board traces for greater reliability and efficiency

MOSFET power supply and output devices

NOMAD (Non-Multiplying Advanced Decision): An intelligent protection circuit that uses an analog computer to make real time decisions regarding temperature, voltage, current and impedance, thus protecting the unit without limiting  sound output unless needed

Crossover switch: Can select high pass, full (off) or low pass; slope is 12dB (Butterworth)


  • LED: RED power
  • REM input: Gold plated .25" spade terminal
  • Gold plated set screw terminals for power and ground, note that there are two each, the second ground and power terminal are for use with an optional energy storage capacitor.  The set terminals (speaker/power/ground) will accept bare wire size from 8 to 18AWG
  • Gold plated set screw terminals for left and right speakers  (mono = +L and -R)
  • Punch Bass knob: Adjustable bass equalization rotary knob, can increase bass boost from 0-18dB at 45Hz
  • Variable crossover frequency: Rotary knob, variable from 50-210Hz
  • Left and right variable gain controls
  • Left and right gold plated RCA preamp inputs
  • High level (speaker level) input: Molex jack for use with supplied harness

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.