---
product_id: 278367585
title: "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: "429949CFA"
currency: XOF
in_stock: true
category: "Boss Audio Systems"
url: https://www.desertcart.sn/products/278367585-ask904b-64-marine-boat-6-5-inch-speakers-and-4
store_origin: SN
region: Senegal
---

# Bluetooth remote & USB charging 500W max power x4 channels IPX7 waterproof rating 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:** 429949CFA
**Availability:** ✅ In Stock

## Summary

> 🌊 Rock the waves with unstoppable sound and zero compromise!

## Quick Answers

- **What is this?** 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?** 429949CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/278367585-ask904b-64-marine-boat-6-5-inch-speakers-and-4)

## 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

- • **Wireless Freedom:** Stream effortlessly via Bluetooth—no head unit needed, just pure wireless control.
- • **Pro-Grade Durability:** Polycarbonate speakers with rubber surrounds and weatherproof connectors built to last.
- • **Weatherproof & Ready:** IPX7-rated waterproof design ensures your music never stops, rain or shine.
- • **Power Your Adventures:** Unleash 500 watts of crystal-clear sound across 4 channels for immersive marine audio.
- • **Plug & Play Convenience:** USB charging port and auxiliary input keep your devices powered and connected on the go.

## Overview

The BOSS Audio ASK904B.64 is a marine-grade 4-channel amplifier and dual 6.5-inch full-range speaker package delivering up to 500 watts max power. Featuring IPX7 waterproofing, Bluetooth streaming with remote control, USB charging, and auxiliary inputs, it’s engineered for rugged outdoor use with professional-grade materials and weatherproof connectors. Perfect for millennial professionals who demand premium sound and seamless connectivity on every adventure.

## 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.

## 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 | #81,120 in Electronics ( See Top 100 in Electronics ) #107 in Marine Electronics |
| Brand Name | BOSS Audio Systems |
| Customer Reviews | 4.4 4.4 out of 5 stars (629) |
| 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 | 10 Pounds |
| Manufacturer | BOSS Audio Systems |
| Material Type | Polycarbonate |
| Maximum Supply Voltage | 12 Volts (DC) |
| Minimum Supply Voltage | 12 Volts |
| Model | ASK904B.64 |
| Mounting Type | Surface 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 |

## 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

![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/81HL3vQdxBL.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

## 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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**Shop now:** [https://www.desertcart.sn/products/278367585-ask904b-64-marine-boat-6-5-inch-speakers-and-4](https://www.desertcart.sn/products/278367585-ask904b-64-marine-boat-6-5-inch-speakers-and-4)

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-07-13*