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The market is so flooded with motorcycle stereo amplifiers that you may have difficulty narrowing it down. The following are the top ten most searched best motorcycle stereo amplifiers in 2021. The following list is the result of hours of research. Keep reading!

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Our Recommended 10 Best motorcycle stereo amplifier Reviews in 2021

SaleBestseller No. 1
Pyle 4-Channel Marine Amplifier Receiver - Waterproof and Weatherproof Audio Subwoofer for Boat Stereo Speaker & Other Watercraft - 1200 Watt Power, Wired RCA, AUX and MP3 Audio Input Cable - PLMTR4A
  • WATERPROOF & WEATHERPROOF: The audio amplifier is waterproof with its marine grade rating of IP-65. It has a rugged construction and integrated power wiring harness to combat weather conditions
  • POWERFUL 1200 WATT: This amplifier receiver is powerful with its 1200 watt max. It has an anti-thump turn on and soft turn on or off to save energy. Comes with 2 to 4 Ohm speaker impedance and adjustable volume control
  • 4 CHANNEL AMPLIFIER: Pyle’s PLMTR4A is engineered as a 4-channel marine amplifier that powers up any boat stereo speaker and is universally compatible too. It has wired RCA, AUX and MP3 audio input
  • SHORT PROTECTION: Built with a heavy duty heatsink, thermal overload speaker short protection to protect the amp and your vehicle's electrical system from short circuit conditions. It has 12V DC and 10A fuse
  • COMPACT AND LIGHTWEIGHT: The subwoofer amp is compact with an exact dimension of 6.2’’ x 3.5’’ x 2.1’’ and lightweight with only 2.29 lbs. The T.H.D is 0.1%, S/N Ratio is > 95 dB, channel separation is > 65 dB and the frequency response is 10 - 40kHz
Bestseller No. 2
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. 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
Crown XLi2500 Two-channel, 750-Watt at 4Ω Power Amplifier
  • Stereo/parallel/bridge-mono mode
  • User selectable input sensitivity - 0.775V and 1.4V.Voltage Gain : 33 dB
  • Electronically balanced RCA & XLR inputs; binding post and Speak on outputs
  • Efficient forced-air cooling prevents excessive thermal buildup
  • Two level controls, power switch, power LED, and six LEDs which indicate signal presence, clip and fault for each channel
Bestseller No. 5
Rockford Fosgate TM400X4ad Power Marine 400 Watt Class-ad 4-Channel Amplifier
  • Our compact (1.6” x 4.3” x 8.3”) Power Marine TM400X4ad 4-channel amplifier produces more power per square inch than any other model we make with 400 Watts of POWER
  • Proprietary Constant Power amps are the most powerful on the market, delivering up to 25% more power across all impedance loads (100 Watts x 4 @ 4-Ohm or 100 Watts x 4 @ 2-Ohm or 200 Watts x 2 @ 4-Ohm Bridged)
  • Built on Rockford Fosgate’s proprietary Class-AD technology and Element Ready protecting against dust, UV, and corrosion, making it perfect for motorsport and marine applications
  • High-level auto turn-on, CLEAN circuit input/output clip detection, On-board Punch EQ with +18dB boost @ 45Hz and 12dB/octave Butterworth crossover make TM400X4ad an impressive POWER house
  • Famous Rockford Fosgate build quality insures that the TM400X4ad will handle everything you throw at it! Full 2-year parts and labor warranty when purchased from an authorized Rockford Fosgate reseller
Bestseller No. 6
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
SaleBestseller No. 7
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. 8
BLAUPUNKT 1600W 4-Channel, Full-Range Amplifier AMP1604
  • Blaupunkt AMP1604 4-Channel, Full-Range Amplifier Max. Output Power: 1600W
Bestseller No. 9
GoHawk AN4-QX All-in-One 1200W Built-in Amplifier 4.5" Waterproof Bluetooth Motorcycle Stereo 4 Speakers Audio Amp System AUX for 1-1.5" Ape-Hanger Handlebar Harley CVO Touring Cruiser Custom
  • GoHawk AN4-QX 1200W All-in-One Amplifier 4-Channel 4.5” Full Range Motorcycle Stereo Speakers with High-Performance Bass. Class-D Electronic Amplifier Built-in. No additional amplifier is required. 3.5mm AUX and USB Input Available. Support USB drive only. (Does not support USB to Phone as music playback. Included Full-function wired control.
  • 4.5" Chrome Finished Speaker Housing. Waterproof Design. Built with High-Quality ABS Material. 70" Long Speaker Cable(Slave speaker) with Standard RCA Male Connector(Can be extended, Search for RCA Extension, Sold Separately).
  • Included New X-Large Mounting Clamp supports 1 to 1.5" bar size. Compatible with Ape Hanger and crash bar with 1-1/2" bar diameter. Perfect for Harley Motorcycle Touring Cruiser Can-Am ATV UTV RZR Polaris 4 Wheeler Electric Bike Marine Boat.
  • Bluetooth 5.0 Wireless: Stream your favorite music and radio channel from your smartphone. Compatible with iPhone 6 / 7 / 8 / X / XR / XS / SE / 11 / 12 / 13 Pro Max, iPod, Samsung Android Galaxy S Note Series and any smartphone devices. Support Bluetooth Wireless connection up to 15 meters.
  • Superb Crystal Sound Quality. Advanced IP56 Waterproof Design. Great for outdoor use. Included full function wired control. Easy Installation: Included SAE to Ring Terminal Connector Power Cord. Comes with all necessary hardware and wiring. Plug and Play. Standard 12V Power Connection.
Bestseller No. 10
1000W Motorcycle Speaker Bluetooth Amplifier Waterproof for Audio Stereo 4 Speaker MP3 FM Radio System for Motorcycles/ATV/UTV/Boat
  • ✅★High-quality Materials: The for Audio Speaker is made of high-quality ABS+Iron, which is hard and durable, corrosion-resistant and has a long service life. Most car accessories are made of ABS plastic, which is known for its strength, high durability and corrosion proof.
  • ✅★Wireless Bluetooth: Motorcycle MP3 Amplifier has wireless Bluetooth function, stream your favorite music and your radio channel from your smartphone.Compatible with Samsung/Android/iOS phone 4/5/6/7/8/X, and for Galaxy S note series and any smartphone devices.
  • ✅★Wide Applications: Bluetooth Speaker is suitable for four stereo channels, perfect for touring motorcycle cruiser ATV UTV electric bicycle marine boat.Suitable for motorcycle, stereo, 4 speakers, MP3, for Audio, FM, motorcycle / ATV / UTV / marine radio system.
  • ✅★Unique Design: LCD high‑definition display, supports for USB for Audio input, SD card for Audio input, and 3.5mm/0.14in AUX for Audio input.Superb crystal sound quality. Advanced IP54 waterproof design is ideal for outdoor use.
  • ✅★Easy to Install:Car Stereo Speaker has compact size and is easy to install and fits anywhere.Installed inside the rack, it can be drilled for fixed installation, 360 degree without direction adjustment to make sound positioning perfect.

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