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Upgrade your in-car listening experience with a Pioneer GM Series amplifier — it'll provide the power and sound quality you're looking for, all in a reliable package you can count on. Under the hood, solid construction eliminates resonant vibrations that can cause distortion, while an efficient cooling system keeps the amp running clean when it's working hard.

The GM-5400T 2-channel amplifier produces 125 watts RMS per channel — just the ticket for powering a set of high-end component speakers. Or bridge the amp to mono operation for a potent 380 watts of power on tap — plenty of power for laying down some serious funk with a sub or two. Activate the built-in low-pass filter to send your sub everything below 80 Hz, while high- and low-level inputs allow you to add the GM-5400T to almost any system, even a factory stereo.

Product Highlights:

  • 2-channel car amplifier
  • 125 watts RMS x 2 at 4 ohms (190 watts RMS x 2 at 2 ohms)
  • 380 watts RMS x 1 in bridged mode (4-ohm stable in bridged mode)
  • CEA-2006 compliant
  • selectable low-pass filter (80 Hz, 12 dB per octave)
  • selectable bass boost (0/6/12 dB at 50 Hz)
  • MOSFET power supply
  • preamp and speaker-level inputs
  • fuse rating: 30A x 2
  • 8-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • 10-7/16"W x 2-7/16"H x 14-1/8"D
  • warranty: 1 year
  • Our 60-day money-back guarantee

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.

Pioneer GM-5400T Reviews

Average Customer Review:

11 Reviews

want to know whats wrong

Written by: slipfan86 from danville, il 61876 on June 15, 2012

Its an excellent amp for a single dual voice coiled sub with a low rms but will handle a little more just seems it wears out quick




Written by: sirheck from Shawnee OK on May 28, 2011

Have this pushing a kenwood excellon 8 inch 4 ohm sub. Good power, but runs VERY VERY HOT. It literally feels like touching a catalytic converter on a car. Can't touch it for more than 2 seconds or it will burn your hand.

Other than that it is good. Probably wont last long though.



Great Buy

Written by: Andy from Adjuntas, P.R. on March 8, 2011

Crutchfield Customer Review (What's this?)

I got wath i expect with this amplifier, the price was great and i have a good confidence
in all the Pioneer equipments.



Great sound and good power

Written by: JC from Upper Marlboro, Md. on August 20, 2010

Crutchfield Customer Review (What's this?)

Amp gives good tight sound to my 12" infinity sub. It will take your lows to a new level without being overpowering. Thinking to purchase another one to drive my other speakers.



Bumps good

Written by: austin from MOrgantown,WV on December 26, 2009

I just got this amp with 2 12" kicker CVX's for christmas. id have to say im happy the
subs were buy one get one free. we hooked them up this morning and the amp only
puts 250 watts to each sub when two are hooked up. with one hooked up it puts out 760
watts to it so i would only recommend this amp for a single sub with two hooked up it
barely bumped at all it sounded pretty bad. we disconnected one and put the power all
to one of them and it bumps HARD.



awesome !!!

Written by: brandon from temecula, CA on October 20, 2009

this amp is great. i just installed my first system and i have two 12'' kenwood KFC W3012's (4ohm, 400rms, 1200 max) in a sealed box running by the pioneer GM-5400T and it wasnt enough lol. i purchased another pioneer GM-5400T and with 4 awg power and ground connected to my capaciter and 14 awg speaker wire they are both bridged and now it really hits.




Written by: chuck from plymouth, indiana on September 11, 2009

this amp is definatly tight for the price good entry level easy to hook up puts out plenty for ur everyday subs dont listen to the idiot about it overheating cause i had mine mounted to my box and after a two and half hour road trip and i checked it out after i could hardly tell it was on other than the light no loud fans none of that just a good overall amp in my eyes but my system just got jacked and guess what im getting the same amp cause i liked it that much just this time instead of powering just one 12" adiobahn it will be 2 12" pioneer ts-w30r's




Written by: Steve from Sallisaw, OK on August 19, 2009

Crutchfield Customer Review (What's this?)

Great amplifier.

I purchased this as part of a complete Pioneer audio upgrade for my car.

Works very well and provides excellent bass with a single (bridged) Pioneer
TS-W1008D2 10" subwoofer.




Written by: Anonymous from Stanfield, NC on July 29, 2009

This amp works super with 2-12" kickers, you can feel the whole car vibration with volume on 25. It doesn't get hot never shuts off. If your amp shuts off it wasn't installed properly. This amp rocks. I recommend it with 5-star rating. Paired with the kickers subs and a pioneer cd radio, it is hard to beat.




Written by: brian from philly on April 7, 2009

Crutchfield Customer Review (What's this?)

worth every penny. and it didnt cost much. i have it pushing 2 12 inch fosgate stage one subs and sounds great. highly recomend.



Recommended by crutchfield

Written by: Pat from va on March 23, 2009

Crutchfield Customer Review (What's this?)

this amp is terrible. it cuts out after 20 minutes of operation due to overheating



Hands-on research

What's in the box?

Download owner's manual

  • 2-Channel amplifier
  • Two 30A fuses (installed)
  • 4.5" Speaker-level input harness
  • Four 3/4" Self-tapping screws
  • Owner's Manual (English/French/Spanish)
  • Warranty sheet
  • "Note:" sheet

Product Research



CEA 2006 Compliant: The Pioneer GM-5400T Two-Channel Power Amplifier power ratings are measured according to the strict standards dictated by the Consumer Electronics Association (CEA). These standards allow you to accurately compare the rated power output of all CEA 2006-compliant amplifiers, even if they come from different brands. Manufacturers who adhere to the standards can display the CEA 2006 logo on their products and packaging. CEA2006 Specifications:

  • Two-Channel: 125 watts x 2 at 4-ohms with 1% THD+N
  • Bridged: 380 Watts x 1 at 4-ohms with 1% THD+N

H-Shaped Chassis: The H-shaped bottom chassis utilizes Pioneer's expertise and exclusive technologies to eliminate resonant vibrations. The H-shaped bottom chassis ensures that your music is reproduced as intended, loud and clear.

Superior Ground Parts: High levels of electric current can easily create noise within an amplifier; especially ground noise. To avoid this, Pioneer made careful consideration when designing and selecting components for use within this amplifier. Only the best, most efficient parts were selected after repeated testing to provide a superior noise-free listening experience.

Efficient Sub-Heatsink: When designing the amplifier chassis Pioneer utilized a main heatsink and a sub-heatsink to dissipate heat. These efficient heatsink structures ensure that the amplifier stay their optimal temperature and keep cool.


Gain Control: To accommodate the varying range of signal levels coming from today's factory and aftermarket radios, all of Pioneer's GM-series amplifiers feature adjustable gain controls (0.2-6.5V). This means that no matter what kind of radio is connected to this amplifier, the appropriate gain control adjustment can be made to ensure loud, clear, distortion-free music. And even if the gain control level is set improperly, Pioneer's Gain Control Caution feature will automatically reduce the amplifier's output until the headunit volume is decreased to acceptable levels. This added layer of protection helps to prevent damage from occurring to the amplifier and the speakers connected to it due to improper gain control adjustments.

Low-Pass Crossover: Built into the GM-5400T is a very smart low-pass crossover network. The fixed low-pass crossover routes the big bass signals (80Hz or lower, at -12dB/octave) to the speaker that handles them best, and filters out higher-frequency signals to that speaker. This optimizes your system's efficiency and delivers the best possible sound quality.

Bass Boost: Selectable 50Hz Bass Boost gives you more control over how your music sounds. It lets you set the optimal bass level for each speaker/sub connected to the GM-5400T, so the tone controls from your headunit can do what they do best. And because this is selectable bass boost, you can set the level at 0dB, 6dB, or 12dB, whichever sounds best to you.


Power Connections: The power and ground connections are 0.5625" wide screw terminals that will accommodate up to 4-gauge wire. The remote turn-on terminal is 0.375" wide and will accept up to 8-gauge wire. A Phillips-head or flat blade screw driver (not supplied) is required to tighten/loosen the terminals. Spade connectors are recommended for the power, ground, and remote wires.

Speaker Connections: The speaker terminals are also 0.375" wide and will accommodate up to 8-gauge wire. A Phillips-head or flat blade screw driver (not supplied) is required to tighten/loosen the terminals. Spade connectors are recommended for the speaker wires.

RCA Input: The amplifier features a pair of gold-plated stereo RCA inputs (left/right).

Speaker Input: The GM-5400T's speaker level inputs and harness allow you to connect your OEM unit (or any unit that does not have the typical RCA-type inputs) without having to buy add-on adapters.

Fuses: The GM-5400T features two 30-amp ATC blade fuses.

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.