BOSS Audio ASK904B.64 Marine Speakers + 4-Channel Amplifier - 500W | Bluetooth, USB, AUX

Meet the BOSS Audio ASK904B.64 bundle—an all-weather audio system designed for boats, decks, and rugged days outdoors. This package combines two pairs of MR6W 6.5-inch full-range marine speakers with the MC900B four-channel amplifier. The entire setup is built to handle the demands of outdoor environments while delivering clear, immersive sound without requiring an in-dash head unit.

Beyond raw power, you get modern listening conveniences: Bluetooth audio streaming from apps like Spotify or Pandora, a USB charging port, and an AUX-friendly interface via the MUSB35 USB-to-Aux adapter. Use the inline multi-function remote to control playback from anywhere on deck. The weatherproof connectors are designed to resist moisture and corrosion, helping you enjoy tunes through changing conditions. A waterproof pouch adds extra protection for gear and devices on damp days.

Sound, durability, and versatility

The amplifier delivers up to 500 Watts max across four channels and remains 4-Ohm stable with RCA outputs, offering flexible amplification for your speakers and, if you add subs, other components. The MR6W speakers feature polypropylene cones and rubber surrounds for resilience in wet environments, while the compact MC900B MOSFET-powered amp supports reliable performance in tight spaces.

With no dedicated head unit required, you can wire the system to power and enjoy music using a Bluetooth source or a USB-connected device. The included inline remote makes it easy to adjust volume or switch tracks while you’re on the move.

What’s included

• MC900B four-channel amplifier
• Two pairs of MR6W 6.5-inch marine speakers
• MUSB35 USB-to-Aux adapter
• Inline multi-function remote control
• Weatherproof connectors
• Waterproof pouch

Key benefits you may experience

• Wireless streaming with Bluetooth for on-the-go control
• USB charging and playback from mobile devices
• Weather-resistant design suited for marine use
• No head unit required, for a simple, compact setup
• Durable marine-grade components with stable 4-ohm operation
• Warranty coverage offering long-term support

Whether you’re cruising the coastline, anchoring at a lakeside spot, or simply hanging out on a windy day, this BOSS Audio system creates a reliable, enjoyable soundtrack. While results will vary by installation and environmental factors, the combination of power, durability, and streaming options gives you tangible possibilities for richer outdoor listening.