BOSS Audio Systems ASK904B.64 Marine Boat 6.5 inch Speakers and 4 Channel Amplifier - 500 High Output, Bluetooth Remote, USB

4.2 4.2 out of 5 stars | 856 ratings

Price: 134.56

Last update: 11-25-2024


About this item

Amplifier Power - 500 Max x 4 @4-Ohms. USB charging port available. 4-8 Ohm Stable with RCA Outputs
Bluetooth - You do not need a head unit. Just power up the amplifier 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
Weather Resistant - The MC900B has been designed to handle some light weather conditions without giving up on you
Class A/B Topology - 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
Auxiliary - The Bluetooth remote is compatible with the audio output from smartphones as well as MP3 players. Just plug in and start playing
Amp Specs - Dimensions: 7.8” x 3.8” x 1.8”, Weight 2.9 lbs.
Speaker Specs - Power: 180 watts per pair, Frequency: 80 Hz to 20 kHz, Sensitivity: 89 dB, Cone: Polypropylene, Voice Coil: 1”, Surround: Rubber, Dimensions: 3.4” x 7.5” x 7.5”, Mounting Depth: 2.2”, Mounting Hole: 5.8”
BOSS Audio Systems provides a 6-year warranty on amplifiers and 3 years on speakers purchased is made on Amazon.com. We strongly encourage professional installation of this product to ensure proper and safe functionality

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Top reviews from the United States

Bernardo Vanegas
5.0 out of 5 stars Good Product!
Reviewed in the United States on August 5, 2021
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After evaluating many options on the market, I bought this amplifier, read many reviews, and compare different options. I chose this one because it already had the speakers included. It is not easy to choose the right speaker for an amplifier since the amplifiers have RMS and nominal power, which changes if the speaker is 4 or 8. It is not easy to choose the right speaker, so I thought it was very good that already the amplifier will bring the speakers. Less task to acquire the whole set.

I was surprised by the size of the amp. It is really small. I thought the sound would not be that good, but I was wrong. The sound surprised me! It is very good! My boat is a 21-foot bowrider type and with the engine running the old audio system just couldn't be heard, so I decided to change it for a better system, and this one works well.

Pros:
- The small size of the amp really makes it easy to hide it inside the boat
- Bluetooth connection is extremely easy
- The controls screen facilitates everything
- It is a totally marine product
- The speakers are easy to install and have the patterns to make the holes.
- The USB connector is very good. Read MP3.
- It is a very practical system and the sound is very good. Now my friends call it "the party boat" :)
- the price is right.

Cons
- I don't have any for now.
Customer image
Bernardo Vanegas
5.0 out of 5 stars Good Product!
Reviewed in the United States on August 5, 2021
After evaluating many options on the market, I bought this amplifier, read many reviews, and compare different options. I chose this one because it already had the speakers included. It is not easy to choose the right speaker for an amplifier since the amplifiers have RMS and nominal power, which changes if the speaker is 4 or 8. It is not easy to choose the right speaker, so I thought it was very good that already the amplifier will bring the speakers. Less task to acquire the whole set.

I was surprised by the size of the amp. It is really small. I thought the sound would not be that good, but I was wrong. The sound surprised me! It is very good! My boat is a 21-foot bowrider type and with the engine running the old audio system just couldn't be heard, so I decided to change it for a better system, and this one works well.

Pros:
- The small size of the amp really makes it easy to hide it inside the boat
- Bluetooth connection is extremely easy
- The controls screen facilitates everything
- It is a totally marine product
- The speakers are easy to install and have the patterns to make the holes.
- The USB connector is very good. Read MP3.
- It is a very practical system and the sound is very good. Now my friends call it "the party boat" :)
- the price is right.

Cons
- I don't have any for now.
Images in this review
Customer image Customer image Customer image Customer image
PT-13Pilot
5.0 out of 5 stars Great small system for my Waverunner install.
Reviewed in the United States on July 11, 2016
When brainstorming to add a stereo to my Yamaha Waveventure PWC, I came across this system and it seemed to fit my needs and the size of where I intended to put it. I wanted a way to listen to some music when floating or beached and didn't want to permanently modify my ski. So I installed this complete system in a spare front storage compartment. I'm also adding 2 3.5" speakers into a set of spare mirror housings.
The system itself is small, light, and came with everything and seems to be well made, I'll update after use for some time and see how it holds up. For the price, I don't expect it to last forever.
I tested it hooked to a YB14 series battery which is smaller than the one in my ski. I didn't hook up an ammeter, but this seems to draw very little power. I ran it on the bench via Bluetooth from my phone for 3 hours. Battery still showed 12.7 volts and charger said battery was still 95% capacity after the test. Battery drain being a concern, I'm very happy with this.
The included speakers sound good. Not great, but as expected or better. For my needs, quite acceptable. The controls are easy to use. Blue tooth range is great. I tried it at up to 40 ft away and it worked fine.
I'm pleased so far and have no complaints.

Update 7/18/2017:
One year later, still going strong and works as well as the day it was installed!

Update 5/10/2018
Almost 2 years later and still works as well as it did when new. And it lives a rough wet life in the front of my Waverunner. It has been moved to my 98 XL1200 which uses the same front storage tub and gets a lot of looks, listens and thumbs up for having a stereo in my ski. I also put the small Polk audio 3.5” speakers I had in the mirrors of my wave venture in the mounting plate. Still love this setup!

Update: 10/25/2018
Still working like New after another season in the ski. And in the off season I use it in my shop for a stereo. Still very happy!

Update: 4/12/2019
Still going.............
All winter in my shop. And now back in the ski for another season on the water. Still works perfectly!

Update 7/29/2019
You guessed it.........still working perfectly.
Customer image
PT-13Pilot
5.0 out of 5 stars Great small system for my Waverunner install.
Reviewed in the United States on July 11, 2016
When brainstorming to add a stereo to my Yamaha Waveventure PWC, I came across this system and it seemed to fit my needs and the size of where I intended to put it. I wanted a way to listen to some music when floating or beached and didn't want to permanently modify my ski. So I installed this complete system in a spare front storage compartment. I'm also adding 2 3.5" speakers into a set of spare mirror housings.
The system itself is small, light, and came with everything and seems to be well made, I'll update after use for some time and see how it holds up. For the price, I don't expect it to last forever.
I tested it hooked to a YB14 series battery which is smaller than the one in my ski. I didn't hook up an ammeter, but this seems to draw very little power. I ran it on the bench via Bluetooth from my phone for 3 hours. Battery still showed 12.7 volts and charger said battery was still 95% capacity after the test. Battery drain being a concern, I'm very happy with this.
The included speakers sound good. Not great, but as expected or better. For my needs, quite acceptable. The controls are easy to use. Blue tooth range is great. I tried it at up to 40 ft away and it worked fine.
I'm pleased so far and have no complaints.

Update 7/18/2017:
One year later, still going strong and works as well as the day it was installed!

Update 5/10/2018
Almost 2 years later and still works as well as it did when new. And it lives a rough wet life in the front of my Waverunner. It has been moved to my 98 XL1200 which uses the same front storage tub and gets a lot of looks, listens and thumbs up for having a stereo in my ski. I also put the small Polk audio 3.5” speakers I had in the mirrors of my wave venture in the mounting plate. Still love this setup!

Update: 10/25/2018
Still working like New after another season in the ski. And in the off season I use it in my shop for a stereo. Still very happy!

Update: 4/12/2019
Still going.............
All winter in my shop. And now back in the ski for another season on the water. Still works perfectly!

Update 7/29/2019
You guessed it.........still working perfectly.
Images in this review
Customer image Customer image Customer image Customer image
Stacey
5.0 out of 5 stars This is awesome
Reviewed in the United States on June 11, 2024
I was a little nervous based off of some of the reviews but man this thing sounds so good! we did order some bass speakers so we can have more base but they put out a surprisingly loud sound which is perfect for our boat and even without the subwoofers it still sounds pretty dang good ! Very impressed and easy to install! Haven’t had it long enough to know if is truly water resistant time will tell so I still have that a 5
Alan
4.0 out of 5 stars Love the sound!
Reviewed in the United States on June 17, 2016
I installed this system on my boat, a 23 foot center console that I use for offshore fishing. I wanted a system that I could hear clearly while the boat is underway and though I haven't had the opportunity to test it in the field yet it should work fine. It was plenty loud in the driveway. The sound was pretty good as well.
The installation took a while. No fault of the system though. I had to pull new speaker-wire which was an ordeal. The system itself was pretty simple to install. The wires were labeled well and I had zero issues with connecting them.
There were 2 small issues I had with the system that made me withhold that 5th star;
1 - The blue-tooth receiver had a very small lip to cover the cutout required for the flush-mount installation. The lip was about 1/16th on top and bottom and maybe 1/8th on the sides. This made the cutout process a bit too stressful. A larger tolerance would have mad it much easier.
2 - The speaker wires included in the package were not long enough, or heavy enough gauge. I am pretty sure it wasn't tinned either. which is what you need for a marine application. I bought a much heavier gauge, tinned wire to replace what came with the unit.
Neither of these problems were a deal-breaker by any means.
There is one other important thing to watch for if you intend to purchase this unit. I found this for $138ish on Prime and added it to my cart then clicked "save for later" a few weeks before I completed the purchase. I went back to complete the purchase and didn't check carefully when I re-added it to my cart. What I ended up purchasing was the same unit but for over $150 and not on Prime. When I contacted the vendor they simply said "Sorry you didn't check twice before you purchased." I guess I could have sent it back for a refund but I was too lazy. Just double-check your cart before finalizing.
I will update the review after I have field tested the system but for now I would definitely recommend it.
Leslie
5.0 out of 5 stars Perfect for a golf cart setup
Reviewed in the United States on June 25, 2024
The price was great. Sound is great. Perfect for a golf cart. Love the smaller system for the golf cart dash too! Easy to connect and control with my phone's bluetooth. I'd recommend it.

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