Are you in the hunt for the motorcycle amp? If you are, congratulations! You have landed in the absolutely perfect place, for we have saved you the hassle of going through thousands of reviews.

Do not fret if you are struggling to figure out the best motorcycle amp from the pool of the out of there in the market. For your ease, we have curated an extensive list of the top 10 motorcycle amp of 2021. So, check out the list below that’s found after long hours of research. Read on!

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Best motorcycle amp Reviewed In 2021

Bestseller No. 1
Soundstream ST4.1200D Stealth Series 1200W Class D 4 Channel Amplifier
  • Stealth Series 1200W class D 4 channel amplifier RMS power 4Ω: 100X4/ RMS power 2ω: 150X4/ bridged 4Ω: 300X2 2-Ohm stereo &
  • 4-Ohm bridged full-range operation Hybrid aluminum alloy heatsink for optimum dissipation Military grade SMT PCB maintains dynamic performance
  • Package dimensions: 7.75" L x 3.0" W x 1.5" H
  • Country of Origin: CHINA
Bestseller No. 2
Kenwood KAC-M1814 4-Channel Compact Bridgeable Marine/Motorsports 400W Max Power Digital Amplifier
  • Digital Amplifier Technology
  • Speaker Level Input w/ Signal Sensing Turn-on
  • 2 Ohms Load Capability
  • Power MOS-FET Switching Power Supply
  • 1m (3.3ft) RCA Cable
Bestseller No. 3
Rockford Fosgate Punch PBR400X4D Compact Chassis 400-Watt Full-Range 4-Channel Amplifier
  • Our compact (1.5" x 4.25" x 6.75") PBR400X4D is small enough to fit in just about any application but packs a Punch with 400 Watts RMS of power!
  • Versatile design can be used in either 2 or 4 channel configurations (RMS Power Output: 50 Watts x 4 @ 4-Ohm or 100 Watts x 4 @ 2-Ohm or 200 Watts x 2 @ 4-Ohm Bridged)
  • Ultra efficient Class D full range design produces maximum power with minimal strain on the vehicle's electrical system. A great choice for both mobile installs as well as motorcycles and recreational vehicles
  • High level inputs with auto-on feature as well as differential RCA inputs along with selectable fixed 12dbB/Octave Butterworth Crossovers make the PBR400X4D amp compatible with just about any installation
  • Famous Rockford Fosgate build quality insures that the PBR400X4D will handle everything you throw at it! Full 1-year parts and labor warranty when purchased from an authorized Rockford Fosgate reseller
Bestseller No. 4
Soundstream SM4.10000D 1000W Max 4 Channel Stealth Series Marine Grade Class D Amplifier - SM4.1000D
  • 90 watts RMS x 4 at 4 ohms (125 watts RMS x 4 at 2 ohms)
  • 250 watts x 2 bridged at 4 ohms
  • Mosfet power supply. Quick Disconnect RCA/High Level Wire Harness
  • Preamp and speaker-level inputs
  • Variable high- and low-pass filters (35-250 Hz, 12 dB/octave)
SaleBestseller No. 5
BOSS Audio Systems MC900B 4 Channel Weatherproof Amplifier – Bluetooth, 500 Watts, Bluetooth Multi-Function Remote, Full Range, Class A/B, 4-8 Ohm Stable, Aux-in, RCA Outputs, USB Charging
  • Power: 500 Watts Max x 4 @4-Ohms, 94 Watts RMS x 4 @4-Ohms
  • Bluetooth: You do not need a head unit. Just power up the MC900B and hook up some speakers to it. The included Bluetooth remote control lets you stream your music via your Bluetooth device and use apps like Spotify and Pandora
  • Weatherproof: The MC900B has been designed to handle some light weather conditions without giving up on you. It is great for use in ATVs and boats.
  • Class AB: Class ‘A’ amplifiers have enormous amount of current flowing through its output transistors with no audio signal. Class ‘B’ amplifiers have no current flowing through its outputs with no audio signal
  • Full Range: With a Full Range amplifier you not only have the option to run your speakers, but also your subwoofers
Bestseller No. 6
BOSS Audio Systems PHANTOM900 Motorcycle Weatherproof Bluetooth Speaker System - 3 Inch Speakers, Built-in Amplifier, Built-in Bluetooth, Volume Control, Great for ATVs and All 12 Volt Vehicles
  • Bluetooth: with the built-in Bluetooth you can play and control a vast library of your favorite music using your smartphone or MP3 device as well as using apps like Spotify and Pandora, wirelessly
  • Amplifier: a built-in 2 channel, compact, class D amplifier is included, offering 600 watts to both speakers
  • Weatherproof: the PHANTOM900 has been outfitted with the latest weatherproofing techniques for protection against the elements
  • Speakers: two 3-inch Shiny black full range speakers are held by custom Tooled skeleton hands which also serve as the mounting brackets. The adjustable brackets will fit handlebars ranging from 1” to 1.5”
  • Playback: a 3.5 mm auxiliary input is compatible with audio outputs of smartphones and MP3 players
SaleBestseller No. 7
BOSS Audio Systems BHD3F Harley Davidson Bike Front Speakers Kit System – Fits Select 1998+ Electra, Road Glide and Street Glide Motorcycles, 4 Channel Amplifier, 6.5 Inch Full Range 300-Watt Speakers
  • REQUIRED - Professional reflash of your factory radio is necessary after speaker install in order to avoid speaker damage and obtain the correct/optimal sound quality and performance
  • Speaker Grille Options – (2) 1998-2013 Electra, (2) 2014+ Street Glide, (2) 2015+ Road Glide
  • Amplifier – A 600 Watt compact 4 channel class D amplifier is included to drive the speakers for unmistakably well-balanced notes
  • Cone - Made from polyurethane, the BHD3F 6.5 inch car speakers provide a resilient and durable material that can offer great sound with the advantage of long lasting speakers
  • Surround - Rubber has the ability to endure much punishment without any sign of damage. It complements the whole structure of the speaker by allowing constant abuse where it is most needed, without the wear and tear
Bestseller No. 8
Pyle Hydra Marine Amplifier - Upgraded Elite Series 800 Watt 4 Channel Micro Amplifier - Waterproof, GAIN Level Controls, RCA Stereo Input, 3.5mm Jack, MP3 & Volume Control (PLMRMP3B)
  • PREMIUM 4 CHANNEL AMPLIFIER: Engineered as a 4 Channel marine amplifier that allows high quality stereo reproduction from source. This will power up your speaker and universally compatible with a variety of head units like MP3 and smartphone.
  • RCA STEREO INPUT: For an easier use of this hydra marine amplifier, it comes with premium RCA inputs. This also includes a 3.5mm-to-RCA adaptor so you can connect your device and a remote for volume control.
  • SHORT PROTECTION: Has a built-in power protection circuitry and soft turn on/off. These are to protect the amp and your vehicle's electrical system from short circuit conditions.
  • POWERFUL 800 WATT: This amplifier is powerful with its 800 WATT maximum power supply. Comes with adjustable input GAIN level controls of 2 to 4 Ohm speak. It’s also waterproof marine grade.
  • Included Components: 1 Pyle Branded Product
Bestseller No. 9
MTX MUD100.4 Mud Series 400 Watt RMS 4 Channel Class D Compact Weatherproof Outdoor Powersports ATV UTV Motorcycle Sound System Stereo Amplifier Kit
  • INSTALL IN THE TINIEST OF SPACES: Compact design and small footprint chassis allows for installation in space challenged vehicles
  • WEATHER-PROOF DESIGN: Conformal coated circuit board is protected against corrosion or circuit deterioration due to exposure to moisture or salty conditions
  • WIDE RANGE OF ABILITY: Fixed high and low pass crossovers allow use with full-range speakers or subwoofers
  • HIGH AND LOW-LEVEL INPUTS: High and low-level inputs allow for connections to both speaker and RCA input signals
  • CONVENIENT PIGTAIL CONNECTION: Includes a pigtail that contains all of the wiring necessary to connect power, ground, and signal without having to make a connection directly at the amplifier
Bestseller No. 10
ALPINE KTA-450 400w 4-Channel Amplifier Small Footprint Saddlebag Motorcycle Amp
  • Alpine KTA-450 Power Pack Compact 4-channel car amplifier — 50 watts RMS x 4

Things To Look For Before Buying A Motorcycle Amplifier:

Best Motorcycle Amp

When you know what to look for in an amplifier, selecting the right amp for your motorcycle isn’t as hard as you think.

We outline the most important factors when choosing an amplifier for your bike below:

Number of channels

There are different categories of motorcycle amplifiers depending on their number of channels, as you can see in our amplifier reviews.

First of all, “channels” is a term that simply refers to how many separate speakers a given amplifier can supply electricity to.

An amp that is mono-channel would be a good choice if your audio system only consists of one speaker or a subwoofer. A two-channel amp will drive up to two speakers, and a three-channel amp will drive up to three speakers.

If you still have time, keep in mind that some amplifiers come with the option of bridging channels together to produce an improved sound output.


Keeping the amp’s physical size in mind is another important consideration when shopping for a motorcycle amplifier.

Our motorcycle amplifier reviews above show that different amps come in different sizes.

It is recommended that you double-check that the specific model you pick fits in the available space in your motorcycle, since most feature small and compact designs.

Power rating

It’s also important to make sure the amplifier you’re buying has a power output that matches the speakers in your system.

What are the reasons for this?
There is a chance your speakers will sound underpowered or overpowered if you don’t match your amp and speakers.

Your speakers will produce weak, distorted, and unclear sounds if you buy an amp that gives them less power.

If you get an overpowering amp, your speakers could be blown out. If your amp output is much greater than your speakers, this is especially true.

You should compare the total power requirement of the speakers with the RMS rating (which indicates the consistent power the amp can provide) when trying to find the ideal match between your amp and speakers.

Make sure your motorcycle audio system amp is compatible not only with speakers, but also with speakers. You will not get any improvements by using the wrong amplifier. Amplifiers with extended frequency responses and low deviations are the best. Check for the THD (distortion) of the amp manufacturer as well. Less distortion is better.

Additional features:

Weatherproofing: If you are planning on riding your motorcycle in extreme weather, check out an amp that has a weatherproof design.

Ease of installation: In addition to the installation hardware, if the amplifier comes with a user guide, then installation is easier.

Bluetooth connectivity: A Bluetooth-enabled amplifier is the right choice for those who do not want to deal with wires.

Warranty: In the event that you turn over your new purchase one day after purchase, and it doesn’t work, a replacement warranty will protect your investment.

Frequently Asked Questions:

1. What’s the work of a motorcycle amplifier?

Motorcycle amplifiers amplify (or boost) the signals coming from sources such as radios, CD players, mp3 players, and more.

An amplifier does this by altering the amplitude of the audio signal to produce a stronger signal. The result is stronger music, as you guessed right.

2. How much power do I need on the motorcycle amplifier?

These devices require different amounts of power depending on their model. You will find different ratings for different models because of this.

If you plan to purchase an amplifier, you should be attentive to its RMS power rating. An amp’s average output power is what this indicates.

You should adjust the RMS value to match or very close to the power requirements of your bike speakers.

As a general rule, make sure that the amplifier you choose will provide enough power to drive all the components of your sound system.

3. Can I use a car audio amplifier on my motorcycle?

A car amp shouldn’t be used on a motorcycle. Due to the fact that the car-specific amplifier operates at extremely high loads, it drains your motorcycle battery very quickly.

If you don’t address the problem soon, you might experience problems like dimmer lights, engine failure, and more.

If you want your battery to last as long as possible, you MUST stick with motorcycle amplifiers as they draw low loads from the battery.

Final Verdict

Listening to your favorite music while riding your motorcycle is an unforgettable experience. Your soul is nourished by the music, and it gives you the zeal to complete your journey.

For a musical journey on a motorcycle, investing in the best motorcycle amplifier is crucial. With a bike amp, you will be able to boost the quality and power of the sound signals coming from your audio input devices-which results in more powerful music output.

The dull sound of your engine should never be heard again while driving along long stretches of road.

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