---
product_id: 16543816
title: "ASK904B.64 Marine Bluetooth 6.5in Speakers & Amplifier"
brand: "boss audio systems"
price: "₩591956"
currency: KRW
in_stock: true
category: "Boss Audio Systems"
url: https://www.desertcart.kr/products/16543816-ask904b-64-marine-bluetooth-6-5in-speakers-and-amplifier
store_origin: KR
region: South Korea
---

# IPX7 weatherproof rating Bluetooth audio streaming 500W max power output ASK904B.64 Marine Bluetooth 6.5in Speakers & Amplifier

**Brand:** boss audio systems
**Price:** ₩591956
**Availability:** ✅ In Stock

## Summary

> 🌊 Rock your boat and your vibe with unstoppable marine sound!

## Quick Answers

- **What is this?** ASK904B.64 Marine Bluetooth 6.5in Speakers & Amplifier by boss audio systems
- **How much does it cost?** ₩591956 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/16543816-ask904b-64-marine-bluetooth-6-5in-speakers-and-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

- • **All-Weather Durability:** IPX7-rated weatherproof connectors and rubber surrounds keep your music playing rain or shine.
- • **Powerful 500W Amplifier:** Unleash crystal-clear sound with 4-channel MOSFET power for your marine adventures.
- • **Remote Control Convenience:** Inline multi-function remote lets you manage volume and tracks effortlessly on the go.
- • **Seamless Bluetooth Streaming:** Wirelessly connect your smartphone and control playlists without an in-dash unit.
- • **Compact 6.5" Full-Range Speakers:** Polypropylene cones deliver rich, balanced audio in a sleek, space-saving design.

## Overview

The BOSS Audio Systems ASK904B.64 is a rugged, weatherproof marine audio package featuring a 500-watt 4-channel amplifier and two pairs of 6.5-inch full-range speakers. Designed for all-terrain use, it offers Bluetooth streaming, USB charging, and remote control convenience, ensuring premium sound performance on water or land with IPX7-rated protection and a 6-year amplifier warranty.

## 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

- 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”

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00VFZ09TG |
| Best Sellers Rank | #19,457 in Electronics ( See Top 100 in Electronics ) #5 in Marine Amplifiers |
| Brand Name | BOSS Audio Systems |
| Customer Reviews | 4.3 4.3 out of 5 stars (674) |
| Global Trade Identification Number | 00791489123020 |
| Included Components | Bluetooth Remote, Waterproof Pouch |
| Item Dimensions | 7.5 x 7.5 x 3.4 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 |
| Manufacturer | BOSS Audio Systems |
| Material Type | Plastic |
| Maximum Output Power | 500 watts |
| Model | ASK904B.64 |
| Mounting Type | Boat Mount |
| Number of Channels | 4 |
| Number of Items | 1 |
| 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 | 6 years parts and labor for amplifier. 3 years for speakers. |

## Product Details

- **Brand:** BOSS Audio Systems
- **Item dimensions L x W x H:** 7.5 x 7.5 x 3.4 inches
- **Manufacturer:** BOSS Audio Systems
- **Mounting Type:** Boat Mount
- **Voltage:** 12 volts

## Images

![ASK904B.64 Marine Bluetooth 6.5in Speakers & Amplifier - Image 1](https://m.media-amazon.com/images/I/41ey3MPtYJL.jpg)
![ASK904B.64 Marine Bluetooth 6.5in Speakers & Amplifier - Image 2](https://m.media-amazon.com/images/I/51cIv4FI1vL.jpg)
![ASK904B.64 Marine Bluetooth 6.5in Speakers & Amplifier - Image 3](https://m.media-amazon.com/images/I/51w4bn4IF8L.jpg)
![ASK904B.64 Marine Bluetooth 6.5in Speakers & Amplifier - Image 4](https://m.media-amazon.com/images/I/51spie-IaOL.jpg)
![ASK904B.64 Marine Bluetooth 6.5in Speakers & Amplifier - Image 5](https://m.media-amazon.com/images/I/51OCvdtecTL.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
- 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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**Shop now:** [https://www.desertcart.kr/products/16543816-ask904b-64-marine-bluetooth-6-5in-speakers-and-amplifier](https://www.desertcart.kr/products/16543816-ask904b-64-marine-bluetooth-6-5in-speakers-and-amplifier)

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-09-08*