Why are these so expensive???

Because good stuff costs money.

What are the cables on the unit?

The unit needs power to operate, Blue is Remote out Red is Accessories Yellow is constannt power Black is ground

Wired to boat stereo power. Getting a lot of background noise that isn’t there when I just use the stereo aux. Any idea as to why?

I would look at all your wires. It is grounded directly to the battery. Same with power? Where is the remote on hooked up to?

Do they make this in a 4 channel version? This is to hook up to a 4 channel amp to run 4 speakers

Not that I know of. I got 2 Y cables to make 4 plugs for my amp. Hopefully that works for you. It worked out great for me on my golfcart.

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DS18 BTC-Five Bluetooth 5.3 Audio Receiver for Car, Marine & Powersports – Wireless RCA Adapter, 130ft Range, 3.3V Pre-Out, IP66 Water-Resistant, Auto Reconnect

DS18 BTC-Five Bluetooth 5.3 Audio Receiver for Car, Marine & Powersports – Wireless RCA Adapter, 130ft Range, 3.3V Pre-Out, IP66 Water-Resistant, Auto Reconnect

Product ID: 72399770

Details

Audio Output Mode
Stereo
Brand
DS18
Color
Red
Compatible Devices
Smartphone
Connectivity Technology
Bluetooth
Connector Type
4-Pin Mini DIN

💧IP66 water & dust resistant

📶Bluetooth 5.3, 130ft range

🔊3.3V RCA pre-out, 96dB SNR

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B/.230

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Sold byAmazon PanamaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚗💨 Upgrade your ride’s soundtrack with wireless freedom and rugged reliability!

PLUG PLAY POWER UP - Auto reconnects instantly after power cycles with included cables and inline fuse for hassle-free installation.
BUILT FOR THE ELEMENTS - IP66-rated rugged housing means your tunes survive rain, dust, and off-road adventures without skipping a beat.
AUDIOPHILE GRADE RCA OUTPUT - Crystal-clear 3.3V pre-out with 96dB signal-to-noise ratio for distortion-free sound to your amp or DSP.
SEAMLESS LONG RANGE STREAMING - Bluetooth 5.3 tech delivers ultra-stable audio up to 130ft—cut the cords, not the vibe.
UNIVERSAL UPGRADE FOR ANY RIDE - Compact design fits cars, boats, motorcycles, ATVs & UTVs—bring Bluetooth to your legacy stereo effortlessly.

The DS18 BTC-Five is a Bluetooth 5.3 audio receiver designed for cars, marine, and powersports applications. It offers a robust 130ft wireless range, high-quality 3.3V RCA stereo output with 96dB signal-to-noise ratio, and an IP66-rated water and dust-resistant housing. Featuring auto reconnect and easy plug-and-play installation, it’s the perfect universal solution to add Bluetooth streaming to legacy audio systems across multiple vehicle types.

Specifications

ASIN	B07BV578YG
Audio Output Mode	Stereo
Audio Output Type	Speakers
Best Sellers Rank	#6,569 in Electronics ( See Top 100 in Electronics ) #8 in Audio Component Receivers
Brand	DS18
Built-In Media	Audio Receiver with cables
Color	Red
Compatible Devices	Smartphone
Connectivity Technology	Bluetooth
Connector Type	4-Pin Mini DIN
Control Method	Remote
Controller Type	Bluetooth
Customer Reviews	4.2 4.2 out of 5 stars (1,012)
Format	WAV, WMA
Global Trade Identification Number	00663593066923
Item Weight	0.23 Pounds
Manufacturer	DS18Sound (Automotive Dummy vendor code for NIS)
Mfr Part Number	BT-TWO
Model Number	BT-TWO
Number of Channels	2
Other Special Features of the Product	Bluetooth 5.3, Stereo RCA Output, Universal Digital Media Receiver, Water Resistant IP66, iOS and Android Compatible
Output Power	50 Watts
Output Wattage	50 Watts
Surround Sound Channel Configuration	2.0
UPC	663593066923
Unit Count	1.0 Count
Wattage	50 watts
Wireless Technology	Bluetooth

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