Pioneer Stage 4 PRS-D1200M

Mono subwoofer amp — 600 watts RMS x 1 at 2 ohms

  • Pioneer Stage 4 PRS-D1200M


  • Pioneer Stage 4 PRS-D1200M


  • Pioneer Stage 4 PRS-D1200M

  • Pioneer Stage 4 PRS-D1200M

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Our take on the Pioneer Stage 4 PRS-D1200M

by Buck Pomerantz

My system has plenty of power. Who needs an amp?

You might think you don't need an amp because you have a 400-watt system in your car, or because your new stereo puts out 50 watts a channel. But those are peak wattage ratings, which may boil down to 15 or 20 watts per channel, using the more realistic RMS rating. An amp sends your speakers the power they need to deliver your music with clarity and impact, whether you're using factory speakers or high-performance components. And low-frequency reproduction requires lots of power, so an amp is an absolute must if you're adding a sub to your system.

Pure power from Pioneer

The Pioneer Stage 4 PRS-D1200M mono subwoofer amplifier delivers up to 600 watts RMS, ideal for driving a high-quality subwoofer or two. Its Class D design keeps this compact amp running cool even with a 1-ohm load.

Pioneer PRS-D1200M mono subwoofer amplifier

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Reservoir of power

Custom-made capacitors

Custom-made power supply capacitors store up plenty of energy for sudden peaks, allowing the amp to reproduce heavy bass hits without breaking a sweat. And the PRS-D1200M incorporates all the controls you need to tune your sub to its enclosure and your vehicle. You can adjust the low-pass filter from 40 to 240 Hz, and you can select from three levels of bass boost at 50 Hz. A subsonic filter cuts out everything below 20 Hz, so you don't waste energy on bass you can't hear.


Heavy-duty, gold-plated block terminals accept your power, ground, and speaker wiring — all terminals and connections are located on one side for easy installation. The PRS-D1200M offers speaker- and preamp-level inputs, so you can connect easily to almost any system.

Multi-Amplifier Synchronization System (MASS)

Pioneer's Multiple Amplifier Synchronization System (MASS) allows you to tie up to four SPL amplifiers together to create the kind of power you need to win competitions. Once connected, an adjustment to the level of the master amplifier also changes the level of all the slave amps in the chain.

Multiple amplifiers

Pioneer's Stage 4 System

Check out all the products in Pioneer's Stage 4 System, including receiver, speakers, subs, and amps.


  • mono subwoofer car amplifier
  • 400 watts RMS x 1 at 4 ohms (600 watts RMS x 1 at 2 ohms)
  • 1-ohm stable (600 watts in Hi-Current mode)
  • variable low-pass filter (40-240 Hz)
  • wired remote for bass boost
  • selectable bass boost (0, 6, 9, and 12 dB at 50 Hz)
  • CEA-2006 compliant
  • preamp- and speaker-level inputs
  • fuse rating: 40A x 2
  • frequency response: 10-240 Hz
  • requires 4-gauge power and ground leads — wiring and hardware not included with amplifier
  • 11-7/8"W x 2-1/4"H x 9-11/16"D
  • warranty: 1 year
  • Our 60-day money-back guarantee

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
RMS Power Output (Watts x Channels) 400 x 1
Peak Power Output (Watts x Channels) 1200 x 1
Power at 2 Ohms (Watts x Channels) 600 x 1
Bridged Power (Watts x Channels) N/A
Minimum Impedance Bridged N/A
Minimum Impedance Unbridged 1
Best Frequency Response 10-240 Hz
THD at Rated RMS Power 1%
Signal to Noise Ratio 92 dB
Input Voltage 14.4v
Amplifier Class D
Low-Pass Crossover Frequency 40-240 Hz
Low-Pass Slope (dB/octave) 18 dB/oct
High-Pass Crossover Frequency N/A
High-Pass Slope (dB/octave) N/A
Bass Boost 0, 6, 19, 12 dB
Bass Boost Frequency 50 Hz
Fan Cooled No
Fuse Rating 80
Speaker Level Inputs Included adapter
Preamp Outputs No
Width (inches) 9-11/16
Height (inches) 2-1/4
Depth (inches) 11-7/8
Parts Warranty 1 Year
Labor Warranty 1 Year
Product Research
What's in the box?

Download owner's manual

  • Class-D mono amplifier
  • Bass boost control (CXC4064)
  • 19.75' Bass boost cable (with RJ14 plugs on each end)
  • 9.5" Speaker-to-RCA adapter
  • 4 Self-tapping screws (4mm x 30mm)
  • 2 Self-tapping screws (3mm x 10mm)
  • 4mm Allen wrench
  • 2mm Allen wrench
  • Owner's Manual
  • Warranty sheet

Scratch & Dent items may be missing non-essential accessories. In some cases the manufacturer's accessories have been replaced with generic equivalents.

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 open the box, verify contents, 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.



Pioneer PRS Series: The Pioneer PRS series amplifiers cleanly amplify the music signal, free of distortion or added color.

Independent Signal Circuitry: The Pioneer PRS series amplifiers feature Left and Right independent signal circuitry that eliminates signal interference between the channels and achieves excellent channel separation throughout a wider frequency range.

Custom-Made Power Supply Capacitor Bank: In the quest for optimal bass, Pioneer focused on the PRS amplifier's power handling. With a high-capacity, custom-made capacitor bank adapted to the power supply section, this amp supplies power with rock-solid stability, and does an excellent job of reproducing low-frequency sound.

Linear Technology: The PRS amplifier features this Linear Technology Corporation operational amplifier (OP AMP) used in high-end home audio amplifiers for its precise gain and sound linearity characteristics. The PRS-D1200M includes the OP AMP in its bass boost circuitry to prevent sound quality deterioration.

Class D Amplifier: The PRS-D1200M is a Class D mono amplifier, delivering huge power with low heat and distortion.

1-Ohm Stable: The amp can be connected to loads with impedances as low as 1 Ohm. The lower the impedance, the higher the power output:

  • 400 watts x 1 at 4 ohms (Normal mode)
  • 600 watts x 1 at 2 ohms (Normal mode)
  • 600 watts x 1 at 1 ohm (Hi-Current mode)

Externally Bridgeable: This mono amplifier can be externally bridged--joining two amplifiers together as one--doubling the power to a single woofer or voice coil.

Multi-Amplifier Synchronization System (MASS): Pioneer's proprietary Multi-Amplifier Synchronization System technology allows one amplifier (master) to control the settings of other amplifiers when two or more amps are "strapped" together. This eliminates the need to adjust each amplifier gain separately.


Hidden Controls: The amplifier is equipped with the following controls and switches on the top of the amplifier under a removable aluminum cover-plate:

  • Mode Select: A 3-way switch to set the amplifier's sync mode (Master, Sync, Sync Inv). A "stopper" must be removed before switching from "Master" setting.
  • Input Switch: The amplifier's input switch allows you to select between inputting an audio signal from a car stereo's RCA preamp output (using optional RCA cable) or a car stereo speaker output (using supplied RCA-to-Speaker adapter).
  • Power Mode: The amplifier's power mode switch allows you to connect 2-ohm to 8-ohm speakers in Normal mode or 1-ohm speakers in Hi-Current Mode.
  • Gain: A rotary control (6.5V to 0.4V) to set the input sensitivity of the amp.
  • Low Pass Filter: The PRS-D1200M has a 40-240 Hz, continuously variable low pass filter to optimize your system's efficiency and delivers the best possible sound quality. This low pass filter has a slope of 24dB/octave.
  • Subsonic: The amp has a 20Hz subsonic filter to remove power-robbing frequencies below the tuning of your subwoofer or enclosure. The subsonic filter has a slope of 18dB/octave.
  • Bass Boost: The amplifier features a selectable bass boost control with a wired bass remote. The bass boost frequency is fixed at 50Hz allowing you select the amount of bass boost right from the driver's seat using the wired bass remote. The level is selectable at 0dB (flat), 6dB, 9dB, or 12dB.


Connections: All of the amp's connections are located on one side of the amplifier. The connections include:

  • Fuses: two 40A ATO fuses
  • Power: set screw terminal capable of accepting up to 4 gauge wire
  • System Control: set screw terminal capable of accepting up to 10 gauge wire
  • Ground: set screw terminal capable of accepting up to 4 gauge wire
  • Sync Input/Output: stereo RCA jacks for use when "strapping" two or more amps together
  • Input: stereo RCA jacks for line-level input signal (can be used for speaker-level input with included Low-to High-level adapter)
  • Bass Boost: RJ14 jack for use with the supplied wired Bass Boost remote
  • Speaker Output: set screw terminals capable of accepting up to 4 gauge wire

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Pioneer Stage 4 PRS-D1200M Reviews

Average Customer Review:

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5 out of 5

Matthew O'Brien

Written By Matthew, Parma, Ohio on Wednesday, August 27, 2014
Crutchfield Customer Review (What's this?)
For its small size this amplifier has some power. It is definitely enough for my 12 inch sub. I did buy it as part of a amp/speaker combo, so that was the only way I could justify the price! Unfortunately it did not have enough power for the 10 inch sub that came with it. I guess if it was a two ohm model that would have helped.
Nice, clean sound
High price if it was not a combo
Was this review helpful?    Yes | No
4 out of 5

Compact but loud

Written By Good amp, Atascadero Ca on Tuesday, December 03, 2013
Crutchfield Customer Review (What's this?)
Great amp easy to install
1 out of 1 people found this helpful
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5 out of 5

Great Bang For The Buck!!

Written By Jason, Atlanta ,GA on Tuesday, May 12, 2009
This is a great amp for the cash. I t puts out very clean sound and makes my sub hit lower frequencies than it did with my eclipse amp. This has some of the best audiophile sub bass Ive ever heard. I ve used everything from Rockford fosgate to Infinity. I would highly recomennd using 0 gauge wire to run this even though it only calls for 4 gauge. It never gets hot or shuts down and is very effecient. My lights don't dim or anything. If you can find a deal on this amp JUST GET IT!
12 out of 16 people found this helpful
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1 question already asked

How do you join two amps together, strapping? [ Demetrius  Sep 05, 2014 ]
1 answer
  • I would not try it! Not many amps are strappable and I don't know if there's any real benefit. If you really want to try I suggest an online search! The amp I was sent a picture of only has so much power. If you want more I suggest a different amp. [ MATTHEW   Sep 09, 2014 ]

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For a more in-depth review and enhanced detailed information on the Pioneer Stage 4 PRS-D1200M, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_130D1200M/Pioneer-Stage-4-PRS-D1200M.html ).