---
product_id: 51041422
title: "Boss Audio ask904b.64 500 W 4-Channel Bluetooth Amplifier MC900B & Pair of 180 W MR6 W Marine Speakers Set"
brand: "boss audio systems"
price: "38470299₫"
currency: VND
in_stock: false
reviews_count: 5
url: https://www.desertcart.vn/products/51041422-boss-audio-ask904b-64-500-w-4-channel-bluetooth-amplifier
store_origin: VN
region: Vietnam
---

# Marine-grade durability Bluetooth wireless streaming 500W max power Boss Audio ask904b.64 500 W 4-Channel Bluetooth Amplifier MC900B & Pair of 180 W MR6 W Marine Speakers Set

**Brand:** boss audio systems
**Price:** 38470299₫
**Availability:** ❌ Out of Stock

## Summary

> 🎶 Turn your boat into the ultimate party zone with Boss Audio’s marine powerhouse!

## Quick Answers

- **What is this?** Boss Audio ask904b.64 500 W 4-Channel Bluetooth Amplifier MC900B & Pair of 180 W MR6 W Marine Speakers Set by boss audio systems
- **How much does it cost?** 38470299₫ with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/51041422-boss-audio-ask904b-64-500-w-4-channel-bluetooth-amplifier)

## 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

- • **Complete Audio Package:** Includes perfectly matched 180W marine speakers for an instant upgrade—no guesswork needed.
- • **Compact & Discreet Design:** Small footprint fits effortlessly in your boat or vehicle without sacrificing power.
- • **Marine-Grade Build Quality:** Rubber surrounds and polycarbonate membranes ensure durability on water and land.
- • **Seamless Bluetooth Connectivity:** Stream your favorite playlists from Spotify, Pandora, and more—wirelessly.
- • **Powerful 4-Channel Amplification:** Unleash 500 watts max power with crystal-clear Class A/B sound.

## Overview

The Boss Audio ASK904B.64 is a compact yet mighty 4-channel Bluetooth amplifier delivering up to 500 watts max power at 4 ohms, paired with a set of 180W marine-grade speakers. Designed for marine environments, it features durable rubber surrounds and polycarbonate membranes for superior sound clarity and resilience. Easy Bluetooth streaming and AUX inputs make it a versatile, plug-and-play audio upgrade perfect for boats and outdoor adventures.

## Description

The 500 watt 4-channel Bluetooth amplifier package delivers clear sound, while the rubber surround ensures smooth resonance and durability. This set includes the Boss Audio Mc900B amplifier as well as a pair of Mr6W 6.5 inch speakers with poly carbon membrane and a rubber surround. The 4-ohm stable amplifier has 500 watts of power with a Mosfet power supply, ideal for water and land.

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

- 4-channel amplifier MC900B 500 Watt Max Power at 4 Ω, RMS Power @ 4 Ohm, 4x 94 W Class A/B amplifier
- Speaker Set MR6 W 180 watt max 90 Watt RMS Power per pair
- Multifunction Bedienung
- AUX/Low Level Inputs
- Wireless Playback of music and apps such as Spotify, Pandora

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00VFZ09TG |
| Brand | BOSS Audio Systems |
| Customer Reviews | 4.4 4.4 out of 5 stars (608) |
| Date First Available | 1 April 2015 |
| Item Weight | 4.54 kg |
| Item model number | ASK904B.64 |
| Manufacturer | BOSS AUDIO |
| Manufacturer part number | ASK904B.64 |
| Model | ask904b 64 |
| Product Dimensions | 19.05 x 13.46 x 4.32 cm; 4.54 kg |
| Safety rating | não disponível |
| Special Features | Bluetooth, Wireless |
| Voltage | 12 Volts |
| Wattage | 500 watts |

## Product Details

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

## Images

![Boss Audio ask904b.64 500 W 4-Channel Bluetooth Amplifier MC900B & Pair of 180 W MR6 W Marine Speakers Set - Image 1](https://m.media-amazon.com/images/I/71dNjeh8sgL.jpg)
![Boss Audio ask904b.64 500 W 4-Channel Bluetooth Amplifier MC900B & Pair of 180 W MR6 W Marine Speakers Set - Image 2](https://m.media-amazon.com/images/I/81-CElty91L.jpg)
![Boss Audio ask904b.64 500 W 4-Channel Bluetooth Amplifier MC900B & Pair of 180 W MR6 W Marine Speakers Set - Image 3](https://m.media-amazon.com/images/I/81MSq4tVymL.jpg)
![Boss Audio ask904b.64 500 W 4-Channel Bluetooth Amplifier MC900B & Pair of 180 W MR6 W Marine Speakers Set - Image 4](https://m.media-amazon.com/images/I/81eNo1KQRQL.jpg)
![Boss Audio ask904b.64 500 W 4-Channel Bluetooth Amplifier MC900B & Pair of 180 W MR6 W Marine Speakers Set - 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

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

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

### ⭐⭐⭐⭐⭐ Review
*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.

### ⭐⭐⭐⭐⭐ Review
*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
- 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 Vietnam*
*Store origin: VN*
*Last updated: 2026-01-23*