--- 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: "R13735" currency: ZAR in_stock: true reviews_count: 5 category: "Boss Audio Systems" url: https://www.desertcart.co.za/products/278367585-ask904b-64-marine-boat-6-5-inch-speakers-and-4 store_origin: ZA region: South Africa --- # IPX7 waterproof rating Bluetooth streaming + remote 500W max power output 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:** R13735 **Availability:** ✅ In Stock ## Summary > 🌊 Rock your boat and your vibe—anywhere, anytime! ## 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?** R13735 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/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 - • **Full-Range 6.5" Speakers:** Polycarbonate cones and rubber surrounds deliver rich, balanced audio from 80Hz to 20kHz. - • **USB Charging & Aux Input:** Keep your devices powered and plugged in with versatile USB and auxiliary connectivity. - • **Powerful 4-Channel Amplifier:** Unleash 500 watts max power for crystal-clear, room-filling sound on land or sea. - • **Seamless Bluetooth Streaming:** Cut the cords—stream Spotify, Pandora, and more with the included remote control. - • **Marine-Grade Weatherproof Design:** IPX7-rated waterproofing and corrosion-resistant connectors built to brave the elements. ## Overview The BOSS Audio Systems ASK904B.64 is a rugged marine audio package featuring a 4-channel 500W max Class A/B amplifier paired with two 6.5-inch full-range waterproof speakers. Designed for outdoor and marine use, it offers Bluetooth streaming with remote control, USB charging, and auxiliary inputs. Its IPX7 waterproof rating and weather-resistant connectors ensure durability in harsh conditions, making it the perfect sound system for boating enthusiasts who demand powerful, versatile audio on the go. ## 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: Great quality and price - Sounds really good for the price ## 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 | #91,145 in Electronics ( See Top 100 in Electronics ) #124 in Marine Electronics | | Brand Name | BOSS Audio Systems | | Customer Reviews | 4.4 out of 5 stars 647 Reviews | | Global Trade Identification Number | 00791489123020 | | Included Components | Bluetooth Remote, Waterproof Pouch | | Item Dimensions | 19.1 x 19.1 x 8.6 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 | | Item dimensions L x W x H | 19.1 x 19.1 x 8.6 centimeters | | Manufacturer | BOSS Audio Systems | | Material Type | Polycarbonate | | Maximum Supply Voltage | 12 Volts (DC) | | Maximum supply voltage | 12 Volts (DC) | | Minimum Supply Voltage | 12 Volts | | Minimum supply voltage | 12 Volts | | Model | ASK904B.64 | | Mounting Type | Surface Mount | | Mounting type | Surface Mount | | Number of Channels | 4 | | Number of Items | 8 | | 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) ## 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 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. ### ⭐⭐⭐⭐⭐ Great quality and price *by G***G on 29 March 2026* Sounds really good for the price ### ⭐⭐⭐⭐⭐ Falla en el producto.. *by M***A on 13 August 2024* El producto esta fallando ¿Que debo hacer? Falla: Sube o Baja el volumen a extremos, reproduciendo MP3, en ocasiones sube el volumen al maximo de forma autonoma, sin mando del celular, y los controles del aparato no responden; lo mismo hace pero en sentido opuesto, baja el volumen al minimo (0), sin respondeer. ¿Como pueden ayudarme para resolver esta situacion? ## 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.co.za/products/278367585-ask904b-64-marine-boat-6-5-inch-speakers-and-4](https://www.desertcart.co.za/products/278367585-ask904b-64-marine-boat-6-5-inch-speakers-and-4) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-09-25*