---
product_id: 16543816
title: "BOSS Audio Systems ASK904B.64 Marine Bluetooth 6.5in Speakers & Amplifier"
brand: "boss audio systems"
price: "€ 496.10"
currency: EUR
in_stock: true
reviews_count: 13
category: "Boss Audio Systems"
url: https://www.desertcart.gr/products/16543816-boss-audio-systems-ask904b-64-marine-bluetooth-6-5in-speakers
store_origin: GR
region: Greece
---

# 500W max power x4 channels USB charging port included Weatherproof IPX7 rated BOSS Audio Systems ASK904B.64 Marine Bluetooth 6.5in Speakers & Amplifier

**Brand:** boss audio systems
**Price:** € 496.10
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your marine vibe—wherever the waves take you!

## Quick Answers

- **What is this?** BOSS Audio Systems ASK904B.64 Marine Bluetooth 6.5in Speakers & Amplifier by boss audio systems
- **How much does it cost?** € 496.10 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/16543816-boss-audio-systems-ask904b-64-marine-bluetooth-6-5in-speakers)

## 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

- • **Power-Packed Performance:** Unleash 500 watts max power across 4 channels for crystal-clear, room-filling sound on land or sea.
- • **Stay Charged & Connected:** Integrated USB charging port keeps your devices powered while you keep the party going.
- • **All-in-One Audio Solution:** Includes 2 pairs of 6.5” full-range marine speakers matched perfectly to the amplifier for effortless setup.
- • **Built to Brave the Elements:** IPX7 weatherproof design ensures your audio stays flawless rain or shine—perfect for marine adventures.
- • **Seamless Bluetooth Streaming:** Cut the cords—stream Spotify, Pandora, and more directly with the included Bluetooth remote control.

## Overview

The BOSS Audio Systems ASK904B.64 is a compact, weatherproof marine amplifier and speaker package delivering up to 500 watts max power across 4 channels. Featuring IPX7-rated durability, Bluetooth streaming with remote control, and a USB charging port, it’s engineered for seamless, high-quality sound on boats or outdoor adventures. The package includes two pairs of 6.5-inch full-range marine speakers with polypropylene cones and rubber surrounds, ensuring robust audio performance and easy installation. Backed by a 3-year speaker and 6-year amplifier warranty, this system transforms any marine outing into a premium audio experience.

## 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: So far impressed and happy with purchase - So far so good! Installed on 5/25/26. Sounds great. Straight forward install because all the wires in the harness are well labelled. Easy to connect my phone via Bluetooth. We will see how it holds up throughout the boating season.
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 | #15,011 in Electronics ( See Top 100 in Electronics ) #7 in Marine Amplifiers |
| Brand | BOSS Audio Systems |
| Brand Name | BOSS Audio Systems |
| Customer Reviews | 4.4 out of 5 stars 674 Reviews |
| Global Trade Identification Number | 00791489123020 |
| Included Components | Bluetooth Remote, Waterproof Pouch |
| Item Dimensions | 7.5 x 5.3 x 1.7 inches |
| 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 | 10 pounds |
| Item dimensions L x W x H | 7.5 x 5.3 x 1.7 inches |
| Manufacturer | BOSS Audio Systems |
| Material Type | Plastic |
| Maximum Output Power | 500 watts |
| Model | ASK904B.64 |
| Mounting Type | Flush Mount |
| Number of Channels | 4 |
| Output Power | 500 watts |
| Package Type Name | Box |
| Part Number | ASK904B.64 |
| Specification Met | Ipx7 |
| UPC | 791489123020 |
| Unit Count | 8 Count |
| Voltage | 12 volts |
| 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 |

## Product Details

- **Brand:** BOSS Audio Systems
- **Item dimensions L x W x H:** 7.5 x 5.3 x 1.7 inches
- **Manufacturer:** BOSS Audio Systems
- **Mounting Type:** Flush Mount
- **Voltage:** 12 volts

## Images

![BOSS Audio Systems ASK904B.64 Marine Bluetooth 6.5in Speakers & Amplifier - Image 1](https://m.media-amazon.com/images/I/71TpyN5IWWL.jpg)
![BOSS Audio Systems ASK904B.64 Marine Bluetooth 6.5in Speakers & Amplifier - Image 2](https://m.media-amazon.com/images/I/A1W8ynU53sL.jpg)
![BOSS Audio Systems ASK904B.64 Marine Bluetooth 6.5in Speakers & Amplifier - Image 3](https://m.media-amazon.com/images/I/71W0COJKjML.jpg)
![BOSS Audio Systems ASK904B.64 Marine Bluetooth 6.5in Speakers & Amplifier - Image 4](https://m.media-amazon.com/images/I/71fgcz4vdbL.jpg)
![BOSS Audio Systems ASK904B.64 Marine Bluetooth 6.5in Speakers & Amplifier - Image 5](https://m.media-amazon.com/images/I/81kaZxPmKRL.jpg)

## Available Options

This product comes in different **Style** options.

## 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

### ⭐⭐⭐⭐⭐ So far impressed and happy with purchase
*by D***N on May 26, 2026*

So far so good! Installed on 5/25/26. Sounds great. Straight forward install because all the wires in the harness are well labelled. Easy to connect my phone via Bluetooth. We will see how it holds up throughout the boating season.

### ⭐⭐⭐⭐⭐ Good Product!
*by B***S 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.

### ⭐⭐⭐⭐⭐ Freeman
*by L***Z on May 29, 2026*

A high-quality, precision item—in addition to its robust construction. 100% recommended.

## 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
- FXC Waterproof Marine Boat Rocker Switch Aluminum Panel 5 Gang with Dual USB Slot Socket 3.1A + Volt Meter Blue LED Light for Car Rv Vehicles Truck (KG0149-5B Blue)
- 10 Gauge Marine Wire,10 AWG 30ft Duplex Marine Grade Wire Tinned Copper Oxygen-Free Insulated Red& Black Electrical Cable for Boat/Automotive/RV/Camper/Trailer

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-08-08*