Is there any way to adjust the settings on the amp? It doesn't seem like I'm getting full power out of mine???

I've got two of these installed in the fairing of two H-D. Both have worked great till recently. the older one just one day starting putting out about half the volume it use to. I connected a different speaker and no change. I can switch my phone between the two and with the phone volume the same, the newer one is twice as loud. Is this amp about to die?

Kindly recommend 6.5 inch powered speakers with bass of correct Watts & Impendance. Thanks

This amp will have no problem driving 6.5" 4ohm speakers if they are in to 50-150watt range. Remember it is 4 channel

Can this run 4 80w speakers?

Yes. It will do fine w/ 4 speakers especially if they are low end or factory car speakers. If they are aftermarket higher end speakers you may struggle with clean sound at higher volumes...in which case I'd get a better $$ amp

How long is the wire for the remote?

Well friend it’s about 10 feet long if you’re putting this on your motorcycle I definitely recommend it it’s the best add-on I did my bike I can go 80 mph and here Chris music

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MC900B 4 Channel Amplifier for ATV UTV Car Marine - 500 High Output, Low Level Inputs, Full Range, Weatherproof, Bass for Subwoofer

MC900B 4 Channel Amplifier for ATV UTV Car Marine - 500 High Output, Low Level Inputs, Full Range, Weatherproof, Bass for Subwoofer

Product ID: 14398302

Details

Item dimensions L x W x H
7.8 x 3.8 x
Manufacturer
BOSS Audio
Maximum Supply Voltage
12 Volts (DC)
Mounting Type
Table Top
Voltage
12 Volts

⚡500W max power output

🔊4-channel full range sound

🌧️Weatherproof for all terrains

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€ 273.70

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Details

Item dimensions L x W x H
7.8 x 3.8 x
Manufacturer
BOSS Audio
Maximum Supply Voltage
12 Volts (DC)

Description

🎵 Elevate your ride’s vibe with Boss-level power and weatherproof swagger!

CHARGE ON THE GO - USB port keeps your devices powered up so your playlist never stops.
COMPACT YET MIGHTY - Sleek 7.8” x 3.8” x 1.75” footprint fits discreetly, delivering big sound without bulk.
POWER YOUR ADVENTURES - Unleash 125W RMS x4 channels for crystal-clear, room-filling sound wherever you go.
BUILT TO BRAVE THE ELEMENTS - Weatherproof design means your sound stays flawless rain or shine, perfect for ATVs and boats.
SEAMLESS BLUETOOTH STREAMING - Cut the cord—stream Spotify, Pandora, and more with the included remote control.

The BOSS Audio Systems MC900B is a compact, 4-channel Class A/B amplifier delivering up to 500 watts max power. Designed for ATV, UTV, car, and marine use, it features full-range output, weatherproof connectors, Bluetooth streaming with remote control, auxiliary input, and a USB charging port. Its rugged build and versatile connectivity make it ideal for outdoor enthusiasts seeking powerful, high-quality sound without the need for a head unit.

Specifications

ASIN	B00IBI518Y
Best Sellers Rank	#12,279 in Electronics ( See Top 100 in Electronics ) #21 in Car Multichannel Amplifiers
Brand	BOSS Audio Systems
Brand Name	BOSS Audio Systems
Customer Reviews	4.2 out of 5 stars 1,050 Reviews
Global Trade Identification Number	00791489100762
Included Components	Multi Function Remote Control
Item Dimensions	7.8 x 3.8 x 1.75 inches
Item Type Name	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
Item dimensions L x W x H	7.8 x 3.8 x 1.75 inches
Manufacturer	BOSS Audio Systems
Material Type	Plastic
Maximum Output Power	500 watts
Model	MC900B
Mounting Type	Table Top
Number of Channels	4
Output Power	500 Watts
Package Type Name	Marine Weather Proof 500-Watt Full Range
Part Number	MC900B
Specification Met	certified frustration-free
UPC	791489100762
Unit Count	1.0 Count
Warranty Description	3 Year Platinum Online Dealer Warranty valid only on products Sold / Shipped by Amazon.com. This offer is not valid on purchases made from third party market place sellers

Reviews

M**U

25.06.2025

S**N

20.05.2024

V**L

24.04.2026

C**R

8.03.2026

S**R

16.05.2024

J**Y

14.04.2025

J**R

14.04.2026

H**.

11.07.2025

E**A

10.10.2021

J**K

15.11.2023

B**O

26.04.2026

Y**N

30.11.2025

M**.

29.03.2020

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