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Pioneer GM-DX975

Limited Edition 5-channel car amplifier — 75 watts RMS x 4 at 4 ohms + 600 watts RMS x 1 at 2 ohms

Item # 130GMDX975

Pioneer's handsome GM-DX975 five-channel amplifier can power your entire car audio system, sending 75 watts RMS to...

Pioneer's handsome GM-DX975 five-channel amplifier can power your entire car audio system, sending 75 watts RMS to...

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About the Pioneer GM-DX975

Cool power station

Pioneer's handsome GM-DX975 five-channel amplifier can power your entire car audio system, sending 75 watts RMS to each of your front and rear speakers while delivering up to 600 watts RMS to your sub. Highly efficient Class D technology keeps this powerful amp running as cool as it looks, and allows for a small chassis that fits in a lot of out-of-the-way spaces. The frequency response of the full-range channels stretches up to 50,000 Hz, so it'll support crystal-clear, Hi-Res playback. And this limited-edition amp uses high-grade electronic parts and gold-plated RCA connections to ensure maximum performance.

Cool power station

Pioneer's handsome GM-DX975 five-channel amplifier can power your entire car audio system, sending 75 watts RMS to each of your front and rear speakers while delivering up to 600 watts RMS to your sub. Highly efficient Class D technology keeps this powerful amp running as cool as it looks, and allows for a small chassis that fits in a lot of out-of-the-way spaces. The frequency response of the full-range channels stretches up to 50,000 Hz, so it'll support crystal-clear, Hi-Res playback. And this limited-edition amp uses high-grade electronic parts and gold-plated RCA connections to ensure maximum performance.

Versatile amp

You can also create a strong front soundstage with bass by putting your GM- DX975 into 3-channel mode, sending 200 watts RMS each to a set of high-performance components up front, for example, plus 600 watts to a sub.

Connecting and tuning made simple

Speaker-level inputs allow you to install this amp in a factory system with no RCA connections — the amplifier switches its input mode automatically when it detects the high-level signal, eliminating the need to run a turn-on lead to your receiver or fuse box. Built-in high- and low-pass filters let you adjust the sound for your vehicle's interior, and a wired remote boost that lets you control the amount of bass boost from the front seat.

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Product highlights:

  • 5-channel car amplifier
    • 75 watts RMS x 4 + 350 watts RMS x 1 at 4 ohms
    • 100 watts RMS x 4 + 600 watts RMS x 1 at 2 ohms
    • 200 watts RMS x 2 bridged at 4 ohms + 600 watts RMS x 1 at 2 ohms
  • CTA-2006 compliant
  • Class-D amplifier design
  • frequency response of 4-channel section: 10-50,000 Hz (Hi-Res capable)
  • variable high- and low-pass filters (40-500 Hz, 12 dB/octave) on 4-channel section
  • variable low-pass filter (40-500 Hz, 12 or 24 dB/octave) on sub channel
More Features:
  • wired remote controls bass boost (0-18 dB at 50 Hz) for sub channel
  • preamp and speaker-level inputs
    • gold-plated RCA connections
  • wiring and hardware not included with amplifier
    • 4-gauge power and ground leads recommended
  • fuse rating: 30A x 3
  • dimensions; 12-7/16"W x 2"H x 7-7/8"D
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # GM-DX975

What's in the box:

  • 5-Channel amplifier
  • Three 30-amp ATO fuses (installed)
  • 8" Speaker input harness
  • Wired Bass Boost Remote
  • 16' Bass Boost Remote cable (RJ-14 plug on both ends)
  • Four 3/4" Screws
  • Two 3/8" Screws
  • 3mm Allen wrench
  • 1.5mm Allen wrench
  • Owner's manual (English/ French)
  • Owner's manual (Spanish)
  • Warranty information

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More details on the Pioneer GM-DX975

Mark G.

Product Research

Features
Controls
Connections

Features

CEA-2006 Compliant: CEA-2006 is a system of testing and measurement for mobile audio amplifiers. This voluntary standard advocates a uniform method for measuring an amplifier's RMS power output. The criteria for measuring power uses a DC input voltage of 14.4 volts and the RMS power output is measured over a frequency range of 20 Hz to 20 kHz (for full range amplifiers), with 1% or less Total Harmonic Distortion plus noise (THD+N). CEA-2006 standards allow consumers to compare car amplifiers and receivers under the same conditions (apples to apples).

CEA-2006 Specifications:

  • Power Output: 75 watts RMS x 4 + 350 watts RMS x 1 into 4Ω
  • Signal to Noise Ratio: 75 dBA (measured at 1 watt into 4Ω)

Other Specifications: (not using the CEA 2006 criteria)

  • Power Output:
    • 100 watts RMS x 4 + 600 watts RMS x 1 into 2Ω (at 14.4 volts)
    • 200 watts RMS x 2 (bridged) + 350 watts RMS x 1 into 4Ω (at 14.4 volts)
    • 150 watts (max) x 4 + 700 watts (max) x 1 into 4Ω
  • Signal to Noise Ratio: 94 dB (at rated power output)
  • Distortion: 0.05% (measured at 10 watts, 1 kHz)

Class-FD Amp: A Class-D amplifier offers higher power in a smaller chassis than conventional Class-AB amp designs. Pioneer's exclusive Class-FD design not only delivers full-range Class-D amplification, but is more efficient than other designs. The result is clear full-range sound in a small amplifier. The compact design provides many installation options.

Channel Layout: The GM-DX975 is a 5-channel amplifier; the channels are labeled A (left and right), B (left and right), and SW (subwoofer). The A and B channels are bridgeable, so it can be wired as 5-channel, 4-channel, or 3-channel.

Auto Turn-on: When using a speaker level input, a signal sensing circuit will automatically turn the amp on and off along with the source unit. This eliminates the need for running a system remote control wire (turn-on lead).

Controls

Input Select Switches: The amplifier has two input select switches that allow you to choose the preferred input mode. For the A and B channels, the 4-channel mode requires two pair of RCA inputs be connected to the amplifier's A and B inputs, while the 2-channel mode only requires one pair connected to the A inputs. If you have a separate RCA signal for the subwoofer channel, the SW Input Select should be in the SW position. If you do not have a separate subwoofer input, the switch should be in the A/B position (the subwoofer channel will receive a signal from the A/B input).

Gain Control: There are independent gain controls for the A, B, and SW (subwoofer) amplifier sections, each is continuously variable from 200 mV to 6.5 V. When you use a speaker level input, the gain control range is from 800 mV to 16 V.

Crossovers: The A, B, and SW sections also have independent crossover controls. The A and B channel crossovers can be set to Low Pass, High Pass, or Off (Full Range). The rotary frequency controls are continuously variable from 40 Hz to 500 Hz. The subwoofer channel low-pass crossover is always engaged (can't be bypassed) and is also continuously variable from 40 Hz to 500 Hz. The crossover slope is 12 dB/octave for the A and B channels, and is selectable for the subwoofer channel, between 12 dB/octave and 24 dB/octave via a 2-way switch.

Remote Bass Boost Control: The included Remote Bass Boost control module lets you adjust the amount of bass boost (output by the subwoofer channel) from the front of the vehicle. The Bass Boost circuit is centered at 50 Hz, with a variable boost level of 0 dB to 18 dB. Module dimensions:

  • Width: 1¾" (2⅝ including the mounting tabs)
  • Height: ¾"
  • Depth: 1⅝" (2⅛" including knob and wiring)

Connections

Power: The power and ground connections are set screw terminals that will accommodate up to 4-gauge wire. The included 3mm Allen wrench is used to tighten/loosen the terminals. Pioneer recommends different power and ground wire gauges based on the length of the wire:

  • 8-Gauge: up to 7' 3"
  • 6-Gauge: up to 11' 10"
  • 4-Gauge: up to 21'
Note: The amplifier has three 30-amp fuses installed and Pioneer recommends a 100-amp fuse in-line within 12" of the battery.

Remote Turn-on: The remote connection is a set screw terminal that will accommodate up to 8-gauge wire. The included 3mm Allen wrench is used to tighten/loosen the terminals.

Speaker Connections: The A and B channel output terminals will accept up to 12-gauge speaker wire. The set screws are tightened/loosened using the included 1.5mm Allen wrench. The subwoofer output will accept up to 8-gauge wire. Its set screws are tightened/loosened using the included 3mm Allen wrench.

Signal Input: The amplifier features three pair of stereo RCA inputs for Channels A, B, and SW. If no preamp level signal is available, use the included speaker level input harness, and splice the speaker wires from the source unit to the harness.

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
Perfect for my 2013 Toyota Tundra soundstage! [ Paul  Sep 01, 2019 ]
A
Spoke to 2 different customer reps and both spoke VERY highly of the Pioneer amp!! [ Fernando  Aug 15, 2019 ]
A
Always buy Pioneer [ M  Jul 04, 2019 ]
A
price & features [ James  Apr 24, 2019 ]
A
I chose this amplifier because I did not want to install two amplifiers. [ Stephen  Apr 23, 2019 ]
A
Best bang for you buck. [ Ted  Mar 25, 2019 ]
A
Was recommended to me by the Crutchfield team! Great power output for my system! [ Hunter  Mar 11, 2019 ]
A
Was comparing against the JL Audio RD900/5 - this had more power for the sub and comparable features for significantly less $$ [ Samuel  Mar 03, 2019 ]
A
i want to tri this amp and another think is that is pioneer a very rivailable company with this kind of stuff and the rms are very good at 2 ohms and 4 ohms and is very small can put this under my seat, i want to pair this with may ts m650 pros cant go wrong with this amp [ nelson  Feb 17, 2019 ]
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6 questions already asked

Q
What would be the difference in the sound if i choose to use 1 pair of rca cables running from head unit going to the amp instead off running rca cables for all channels seperately?
[ Wes Yute  Nov 02, 2019 ]
1 answer
A
You will lose the ability to fade, mainly. Ideally you would want to to feed the amplifier as many signal as possible to better tune the sound.
[ Calvin  Nov 15, 2019 ]  Staff
Q
I want to power my four 6.75 kickers rated @ 100w rms at 4ohms and a pioneer free air 8" sub rated @150w rms at 4ohms. Will my sound quality suffer or will the speakers overpower the sub if I simply turn the gain down on the sub channel so as not to blow it?
[ Patrick  Aug 03, 2019 ]
3 answers
A
This amp would an excellent option for your planned build Patrick. Granted, the output to your 8" free-air sub is high and generally speaking, one needs to pay attention to overpowering subs that are in larger air spaces because excursion limits can be reached easily. But you will hear that and I would suggest that you set your gains optimally, rather than deliberately try to limit by running the amp gain down. Reason I say that is because there are signal advantages to having gains set optimally. I have this amp bridged into a component set of Morel's and twin 10" Polk MM1 subs in my escape and I can tell you that it sounds great and runs cool.
[ Robert  Aug 05, 2019 ]
A
Well I power 4 6.5 JL audio an 1 JL audio 10. For as the pioneer 8 only 150 watts not sure if it to much power. You mite need to call them on that one. But hands down best amp I have ever owned.
[ Ted  Aug 04, 2019 ]
A
I loved this amp. Until a whining sound came out of the speakers because the amp went bad.
[ MICHAEL  Aug 03, 2019 ]
Q
Can this amp be bridged to 2 channels at 4 ohm, and then run the sub channel at 2 ohms, or if I bridge it to 2 channels, do I have to run the sub channel also at 4 ohms?
[ Justin  Jun 26, 2019 ]
2 answers
A
Yes, The sub is a Separate Chanel.
[ GRAY  Jul 14, 2019 ]
A
You sure can bridge the 4 channels down to 2 channels and run each bridged channel at 4 ohms while running the 5th channel, the sub channel, at 2 ohms My Bio: https://www.crutchfield.com/bio/Paul
[ Paul  Jul 08, 2019 ]  Staff
Q
Is that bass remote optional? If I decide to run a sub but not use that remote, what does the sub level run at?
[ mbmbmb23  May 12, 2019 ]
3 answers
A
I think it's set wherever your gain is on the amp. I didn't use it at first, but since I installed it, I love the remote. I can adjust the bass simply with the knob.
[ GRAY  May 22, 2019 ]
A
cant give you direct answers but I would run the remote, even if its right next to your amp and set it on mid.
[ Andrew  May 17, 2019 ]
A
Not sure when but can add more bass from radio. Most the time run mine all the was down unless I just want a lot of bass.
[ Ted  May 12, 2019 ]
Q
Could this power 4 speakers that are rated at up to 100W RMS and the Kicker single 10" L7S Solo-Baric, which is 600W RMS (1200 peak)?
[ Stephen  Apr 11, 2019 ]
5 answers
A
Absolutly fantastic amplifier especially for the price.
[ cory  Apr 11, 2019 ]
A
This thing really surprised me I have it powering two 6x9 Alpine type S front door speaker's and two 5.5 inch Alpine type S rear door speaker's and 1 Rockford Fosgate punch 2, 10 inch sub and it has way more than enough power for what I have . I'll admit I was a little hesitant on this unit didn't think it would quite do the job I'm really impressed I'm thinking of actually adding another 10.
[ Jeff  Apr 11, 2019 ]
A
Stephen, I'm running four 650 w 6x9's and two 12" subs . Sounds great! Call crutchfield and let them choose what works best .
[ Marty  Apr 11, 2019 ]
A
Definitely.. I have almost the same set up but all kicker.. sounds great
[ Lee  Apr 11, 2019 ]
A
Yes
[ j. lee  Apr 11, 2019 ]
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