Two Ways to Add Bluetooth to a Marine or Powersports System
When your boat, ATV, or UTV lacks a head unit or you want to stream wirelessly without a full dashboard install, a compact Bluetooth receiver is the practical solution. DS18 offers two waterproof models that share the same basic job—add Bluetooth audio to an amplifier—but differ in one key feature: a built-in microphone with controls.
The DS18 BTRCRMIC includes a CB radio-style microphone that lets you communicate through the audio system, while the HYDRO BTRC-R is a simpler round controller that focuses on music playback and volume control. Which one fits your build depends on whether you need two-way communication or just clean, hands-free streaming.
Key Differences at a Glance
Both receivers are IPX6 water-resistant, use Bluetooth 5.0, and include a USB port for music playback and device charging (1A). They also provide RCA line outputs (2.5V pre-out) and a remote output for an external amplifier. The main difference is the microphone and how you control the system.
- BTRCRMIC – With Microphone and Full Controls: Includes a CB radio-style microphone with a quick-detach cable and red LED indicators. The mic allows you to communicate through the audio system, making it useful for boats where crew need to talk over engine noise or for off-road vehicles where hands-free communication is valuable. The unit also has blue back-lit silicon buttons for easy operation.
- HYDRO BTRC-R – Without Microphone, Compact Round Controller: A round, space-saving design that mounts easily in tight spots. It provides Bluetooth streaming, volume control, and track selection directly from the unit, without a separate microphone. It is best for builds where communication is not needed and you want a minimal footprint.
Supplied Specifications Side by Side
- Marine And Powersports Waterproof Bluetooth Audio Receiver With Controls and Microphone: BTRCRMIC: IPX6 water resistance, Bluetooth 5.0 with range up to 130 ft, stereo 2.5V pre-out RCA, remote output, USB port (1A charging), aux 3.5mm input, CB-style microphone with controls. The microphone and IPX6 rating make this receiver suitable for open-water boats and off-road vehicles where communication and weather protection are priorities.
Marine And Powersports Waterproof Bluetooth Audio Receiver With Controls and Microphone - Marine And Powersports Waterproof Bluetooth Audio Receiver With Controls: HYDRO BTRC-R: IPX6 water resistance, Bluetooth 5.0, 2.5V RCA line output, remote output (200mA), USB port (1A charging), aux 3.5mm input, round compact design with mounting hole diameter 2.87". The compact round form factor fits into small mounting holes, ideal for builds with limited dash space. No microphone means simpler installation and fewer cables.
Marine And Powersports Waterproof Bluetooth Audio Receiver With Controls
When the Microphone Matters
The BTRCRMIC is the right choice if you frequently have passengers or crew who need to communicate over the audio system. The included CB-style microphone plugs into the receiver via a quick-detach cable, and its red LED helps indicate function status. This is especially useful on boats where engine noise can make conversation difficult, or on group rides where you need to give directions without stopping.
If you never need two-way communication, the HYDRO BTRC-R avoids the extra hardware and wiring. Its round body mounts flush in a 2.87" hole and takes up minimal space. You still get full Bluetooth control—play, pause, volume, track skip—directly from the unit, and the 1A USB port keeps your phone charged during long trips.
Installation and Mounting Differences
Both receivers are designed for easy installation, but their mounting approaches differ. The BTRCRMIC uses a one-hole design with an overall width of 3.7" and mounting hole size of 2.87". It includes an integrated power wiring harness with overload and power protection circuitry.
The HYDRO BTRC-R also uses a round cutout (mounting hole diameter 2.87") but has a shallower mounting depth (1.85") compared to the BTRCRMIC (2.44"). This makes the HYDRO easier to fit in tight spaces behind the panel. Both units come with a 4-foot extension cord for the USB port.
Which One Belongs in Your Build?
Choose the BTRCRMIC if you need a communication tool alongside music streaming—especially for boats, off-road convoys, or work vehicles where talking over the system is a real need. The microphone and full button controls justify the higher price (catalog comparison price $179.95, current $89.98).
Choose the HYDRO BTRC-R if you want a simple, space-saving Bluetooth adapter for your amplifier without the extra feature. It costs less (catalog comparison price $107.95, current $53.98) and fits where a larger receiver won't. Both are IPX6-rated and use Bluetooth 5.0, so the core streaming experience is the same—the decision comes down to whether you need the mic.
