--- product_id: 219593581 title: "BOSS AUDIO ASK904B.64 Marine Package Includes 500 Watt Max 4-channel Bluetooth Amplifier, Two Pair 6.5 inch MR6W Marine Speakers, Universal USB cable and Phone Pouch" brand: "boss audio systems" price: "HK$10308" currency: HKD in_stock: true reviews_count: 5 category: "Boss Audio Systems" url: https://www.desertcart.hk/products/219593581-boss-audio-ask904b-64-marine-package-includes-500-watt-max store_origin: HK region: Hong Kong --- # Bluetooth wireless 500W max power 4-channel amplifier BOSS AUDIO ASK904B.64 Marine Package Includes 500 Watt Max 4-channel Bluetooth Amplifier, Two Pair 6.5 inch MR6W Marine Speakers, Universal USB cable and Phone Pouch **Brand:** boss audio systems **Price:** HK$10308 **Availability:** ✅ In Stock ## Summary > 🌊 Ride the sound waves with BOSS power and Bluetooth freedom! ## Quick Answers - **What is this?** BOSS AUDIO ASK904B.64 Marine Package Includes 500 Watt Max 4-channel Bluetooth Amplifier, Two Pair 6.5 inch MR6W Marine Speakers, Universal USB cable and Phone Pouch by boss audio systems - **How much does it cost?** HK$10308 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/219593581-boss-audio-ask904b-64-marine-package-includes-500-watt-max) ## 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 - • **Immersive 500W Max Power:** Feel every wave with crystal-clear, room-filling sound that dominates the marine environment. - • **Complete Ready-to-Go Package:** Includes universal USB cable and phone pouch—everything you need to upgrade your marine audio experience instantly. - • **Durable Marine-Grade Speakers:** Two pairs of 6.5-inch MR6W speakers built to withstand salt, spray, and sun—sound that lasts as long as your adventures. - • **Precision 4-Channel Amplifier:** Customize your audio zones with powerful, distortion-free sound tailored for your boat or outdoor setup. - • **Seamless Bluetooth Connectivity:** Stream your favorite playlists effortlessly from any device—ditch the cables and stay connected on the go. ## Overview The BOSS AUDIO ASK904B.64 Marine Package delivers a robust 500-watt max output through a 4-channel Bluetooth amplifier paired with two pairs of 6.5-inch marine-grade speakers. Designed for durability and superior sound quality in marine environments, this all-in-one kit includes a universal USB cable and phone pouch, making it the perfect upgrade for boaters seeking powerful, wireless audio on the water. ## Description BOSS AUDIO ASK904B.64 Marine Package Includes 500 Watt Max 4-channel Bluetooth Amplifier, Two Pair 6.5 inch MR6W Marine Speakers, Universal USB cable and Phone Pouch Review: Chulada - Exelente producto lo recomiendo se lo puse a una Road king y se escucha muy bien Review: Great quality and price - Sounds really good for the price ## Features - BLUETOOTH - 500 WATT - 4 CHANNEL ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00VFZ09TG | | Brand | BOSS Audio Systems | | Brand Name | BOSS Audio Systems | | Customer Reviews | 4.4 out of 5 stars 627 Reviews | | Global Trade Identification Number | 00791489123020 | | Item Dimensions | 19.1 x 13.5 x 4.3 Centimeters | | Item Weight | 10 Pounds | | 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 | | Model Number | ASK904B.64 | | Mounting Type | Floor Standing | | Number of Channels | 4 | | Output Power | 500 Watts | | Part Number | ASK904B.64 | | Specification Met | 500 Watt Max | | UPC | 791489123020 | | Unit Count | 4 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 - **Mounting Type:** Floor Standing - **Voltage:** 12 Volts ## Images ![BOSS AUDIO ASK904B.64 Marine Package Includes 500 Watt Max 4-channel Bluetooth Amplifier, Two Pair 6.5 inch MR6W Marine Speakers, Universal USB cable and Phone Pouch - Image 1](https://m.media-amazon.com/images/I/81HL3vQdxBL.jpg) ![BOSS AUDIO ASK904B.64 Marine Package Includes 500 Watt Max 4-channel Bluetooth Amplifier, Two Pair 6.5 inch MR6W Marine Speakers, Universal USB cable and Phone Pouch - Image 2](https://m.media-amazon.com/images/I/91Tat1FCh1L.jpg) ![BOSS AUDIO ASK904B.64 Marine Package Includes 500 Watt Max 4-channel Bluetooth Amplifier, Two Pair 6.5 inch MR6W Marine Speakers, Universal USB cable and Phone Pouch - Image 3](https://m.media-amazon.com/images/I/91gYnp9mbUL.jpg) ![BOSS AUDIO ASK904B.64 Marine Package Includes 500 Watt Max 4-channel Bluetooth Amplifier, Two Pair 6.5 inch MR6W Marine Speakers, Universal USB cable and Phone Pouch - Image 4](https://m.media-amazon.com/images/I/810B6VwVUML.jpg) ![BOSS AUDIO ASK904B.64 Marine Package Includes 500 Watt Max 4-channel Bluetooth Amplifier, Two Pair 6.5 inch MR6W Marine Speakers, Universal USB cable and Phone Pouch - Image 5](https://m.media-amazon.com/images/I/81fBJINjcbL.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 ### ⭐⭐⭐⭐⭐ Great quality and price *by G***G on 29 March 2026* Sounds really good for the price ### ⭐⭐⭐⭐⭐ So far impressed and happy with purchase *by D***N on 26 May 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. ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hk/products/219593581-boss-audio-ask904b-64-marine-package-includes-500-watt-max](https://www.desertcart.hk/products/219593581-boss-audio-ask904b-64-marine-package-includes-500-watt-max) --- *Product available on Desertcart Hong Kong* *Store origin: HK* *Last updated: 2026-07-07*