---
product_id: 278367585
title: "BOSS Audio Systems ASK904B.64 Marine Boat 6.5 inch Speakers and 4 Channel Amplifier - 500 High Output, Bluetooth Remote, USB and Auxiliary, Waterproof Pouch"
brand: "boss audio systems"
price: "€ 545.28"
currency: EUR
in_stock: false
reviews_count: 5
category: "Boss Audio Systems"
url: https://www.desertcart.sk/products/278367585-boss-audio-systems-ask904b-64-marine-boat-6-5-inch
store_origin: SK
region: Slovakia
---

# IPX7 waterproof rating Bluetooth streaming + remote 500W max power x4 channels BOSS Audio Systems ASK904B.64 Marine Boat 6.5 inch Speakers and 4 Channel Amplifier - 500 High Output, Bluetooth Remote, USB and Auxiliary, Waterproof Pouch

**Brand:** boss audio systems
**Price:** € 545.28
**Availability:** ❌ Out of Stock

## Summary

> 🎶 Ride the waves with sound that commands attention!

## Quick Answers

- **What is this?** BOSS Audio Systems ASK904B.64 Marine Boat 6.5 inch Speakers and 4 Channel Amplifier - 500 High Output, Bluetooth Remote, USB and Auxiliary, Waterproof Pouch by boss audio systems
- **How much does it cost?** € 545.28 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/278367585-boss-audio-systems-ask904b-64-marine-boat-6-5-inch)

## Best For

- boss audio systems enthusiasts

## Why This Product

- Trusted boss audio systems brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Weatherproof Warrior:** IPX7-rated waterproof design and corrosion-resistant connectors keep your party going rain or shine.
- • **Power-Packed Performance:** Unleash 500 watts max power across 4 channels for crystal-clear, room-filling sound on land or sea.
- • **All-in-One Marine Audio Kit:** Includes 2 pairs of 6.5” full-range marine speakers with polycarbonate cones and rubber surrounds for rich, durable sound.
- • **Seamless Bluetooth Streaming:** Cut the cords—stream Spotify, Pandora, and more directly with the included Bluetooth remote control.
- • **Smart USB Charging & Aux Input:** Keep your devices powered and plugged in with USB charging and auxiliary inputs for ultimate convenience.

## Overview

The BOSS Audio Systems ASK904B.64 is a compact, 4-channel marine amplifier delivering up to 500 watts max power, paired with two sets of 6.5-inch full-range waterproof speakers. Designed for marine environments, it features IPX7 waterproofing, corrosion-resistant connectors, Bluetooth streaming with remote control, USB charging, and auxiliary inputs. Perfect for boaters and outdoor enthusiasts seeking powerful, weatherproof audio with easy wireless control.

## Description

Pump out the jams on your next adventure with the Boss Audio ASK904B.64 4-Channel Weatherproof All-Terrain Speaker and Amplifier package. This combo kit includes the MC900B Amplifier and 2-Pairs of MR6W 6.5" Full Range Marine Speakers with Poly Carbon Cone and Rubber Surround. The 4-Ohm stable Amplifier features 500 Watts Max Power with a MOSFET power supply to rock out on land or water. Plug into the MUSB35 USB to Aux Adapter to charge and play your USB-connected smartphone or other device. Bluetooth Audio Streaming lets you play your favorite music apps like Pandora or Spotify through the speakers. No need for an In-Dash Head Unit to play your music. Control it all with the Inline Multi-Function Remote Control. The ASK904B.64 Amplifier features weatherproof connectors to prevent corrosion and provide protection against the elements. Get out and go with the Boss Audio ASK904B.64. For further product details, please scroll down.

Review: Chulada - Exelente producto lo recomiendo se lo puse a una Road king y se escucha muy bien
Review: Good Product! - 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.

## Features

- 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 desertcart.com. We strongly encourage professional installation of this product to ensure proper and safe functionality

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00VFZ09TG |
| Best Sellers Rank | #83,240 in Electronics ( See Top 100 in Electronics ) #121 in Marine Electronics |
| Brand Name | BOSS Audio Systems |
| Customer Reviews | 4.4 out of 5 stars 609 Reviews |
| Global Trade Identification Number | 00791489123020 |
| Included Components | Bluetooth Remote, Waterproof Pouch |
| Item Dimensions | 19.1 x 13.5 x 4.3 centimeters |
| Item Type Name | BOSS Audio Systems ASK904B.64 Marine Weatherproof Amplifier / Speaker Package - Full Range 500 Watt Bluetooth Amplifier With Remote, 2 6.5 Inch 180 Watt Full Range Speakers |
| Item Weight | 4.54 kg |
| Item dimensions L x W x H | 19.1 x 13.5 x 4.3 centimeters |
| Manufacturer | BOSS Audio Systems |
| Material Type | Polycarbonate |
| Maximum Supply Voltage | 12 Volts (DC) |
| Maximum supply voltage | 12 Volts (DC) |
| Minimum Supply Voltage | 12 Volts |
| Minimum supply voltage | 12 Volts |
| Model | ASK904B.64 |
| Mounting Type | Surface Mount |
| Mounting type | Surface Mount |
| Number of Channels | 4 |
| Output Power | 500 Watts |
| Package Type Name | Box |
| Specification Met | IPX7 |
| UPC | 791489123020 |
| Unit Count | 8 Count |
| Voltage | 12 Volts |

## Product Details

- **Item dimensions L x W x H:** 19.1 x 13.5 x 4.3 centimeters
- **Manufacturer:** BOSS Audio Systems
- **Maximum supply voltage:** 12 Volts (DC)
- **Minimum supply voltage:** 12 Volts
- **Voltage:** 12 Volts

## Images

![BOSS Audio Systems ASK904B.64 Marine Boat 6.5 inch Speakers and 4 Channel Amplifier - 500 High Output, Bluetooth Remote, USB and Auxiliary, Waterproof Pouch - Image 1](https://m.media-amazon.com/images/I/71dNjeh8sgL.jpg)
![BOSS Audio Systems ASK904B.64 Marine Boat 6.5 inch Speakers and 4 Channel Amplifier - 500 High Output, Bluetooth Remote, USB and Auxiliary, Waterproof Pouch - Image 2](https://m.media-amazon.com/images/I/81-CElty91L.jpg)
![BOSS Audio Systems ASK904B.64 Marine Boat 6.5 inch Speakers and 4 Channel Amplifier - 500 High Output, Bluetooth Remote, USB and Auxiliary, Waterproof Pouch - Image 3](https://m.media-amazon.com/images/I/81MSq4tVymL.jpg)
![BOSS Audio Systems ASK904B.64 Marine Boat 6.5 inch Speakers and 4 Channel Amplifier - 500 High Output, Bluetooth Remote, USB and Auxiliary, Waterproof Pouch - Image 4](https://m.media-amazon.com/images/I/81eNo1KQRQL.jpg)
![BOSS Audio Systems ASK904B.64 Marine Boat 6.5 inch Speakers and 4 Channel Amplifier - 500 High Output, Bluetooth Remote, USB and Auxiliary, Waterproof Pouch - Image 5](https://m.media-amazon.com/images/I/81kaZxPmKRL.jpg)

## Questions & Answers

**Q: I hooked this system up in my boat. It works great until i turn the boat motor on. Then it cuts in and out continuously. Ideas what might be wrong**
A: I’m having the exact same problem. With te engine off it works just fine but ad soon as I turn the engine on in cuts and turns off. 

I made a completely separate cable and connection straight from the battery and the problem persists. 

I have a voltage gauge and volts go from 12.6 with the engine off to 14.4 with te engine on which is just fine.

I even changed the voltage rectifier in my engine but the problem persists. 

Its definitely a problem with the amp.

**Q: If i install this without a head unit can i control the fade and balance with the inline multi-function remote?**
A: Not as far as I know !

**Q: What is the rms of the speakers?**
A: 10

**Q: Will the unit still work from a smart phone if the remote gets lost or broken.**
A: The remote is hardwired, if you lose it will not function

## Customer Reviews

### ⭐⭐⭐⭐⭐ Chulada
*by K***. on 15 May 2021*

Exelente producto lo recomiendo se lo puse a una Road king y se escucha muy bien

### ⭐⭐⭐⭐⭐ Good Product!
*by B***S on 5 August 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.

### ⭐⭐⭐⭐⭐ Great for the side by side
*by K***Y on 18 November 2023*

Bought this to install into my side by side. Sounds good and everything works great.

## Frequently Bought Together

- BOSS Audio Systems ASK904B.64 Marine Boat 6.5 inch Speakers and 4 Channel Amplifier - 500 High Output, Bluetooth Remote, USB and Auxiliary, Waterproof Pouch
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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-01-26*