SKU: 78593108004

Boss Audio MGR300B Marine Stereo w/AM/FM/BT/USB [MGR300B]

Sale price$136.79 Regular price$151.99
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 25 - Sep 30

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Description

Boss Audio MGR300B Marine Stereo w/AM/FM/BT/USB [MGR300B]MGR300B Marine Stereo with AM FM BT USB The MGR300B stereo packs a lot of features into a compact round, gauge style design that fits into a standard gauge opening. Crank up some AM FM radio, or plug a compatible device into the rear USB Aux input. The large backlit LED display lets you see what you're hearing with just a glance, while the IPX6 rated water resistant face panel and big, easy to use controls are made to resist sun, salt, and moisture.

MGR300B Marine Stereo with AM/FM/BT/USB

The MGR300B stereo packs a lot of features into a compact round, gauge style design that fits into a standard gauge opening.  Crank up some AM/FM radio, or plug a compatible device into the rear USB/Aux input.  

The large backlit LED display lets you see what you're hearing with just a glance, while the IPX6-rated water-resistant face panel and big, easy-to-use controls are made to resist sun, salt, and moisture.

Features:

  • The marine digital media receiver 
  • White LCD Display with Blue Back-lit Illumination
  • Weather Band
  • AM/FM with 18 presets
  • Water-proof, conformal coated circuit boards

Technical Specifications:

  • 240 Watts peak power
  • Mounting hole - 3" Round
  • Chassis type - Gauge style
  • Presets - 12 FM/6 AM

In the Box:

  • MGR300B Stereo head unit
  • Silicone cover
  • Mounting hardware
  • Owner's manual 

*Sold as an Individual 

Specifications:

  • Auxiliary Input: Yes
  • Bluetooth: Yes
  • Color: Black
  • Cover Included: Yes
  • NMEA 2000: No
  • Power - Output (Watts): 240
  • RCA Input: Yes
  • RCA Output: Yes
  • SiriusXM Ready: No
  • Wired Remote Capable: No
  • Wireless Remote Capable: No
  • Box Dimensions: 6"H x 6"W x 7"L WT: 1.95 lbs
  • UPC: 791489132534

Owner's Manual (pdf)
Brochure (pdf)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 78593108004

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4.7 ★★★★★
Based on 27 reviews
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Keith
Massapequa, US
★★★★★ 5
Great socks
Number of Items: 6, Color: Black (6-pairs), Size: Medium
I love these socks
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
O
Verified Purchase
ok
Battle Creek, US
★★★★★ 5
Good socks
Number of Items: 6, Color: White (6-pairs), Size: X-Large
I have size 13 feet and these are great maybe they’ll stretch and be a bit big but I m fine with that
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 30, 2026
W
Verified Purchase
Wendy H.
Lexington, US
★★★★★ 5
Well made socks
Number of Items: 6, Color: Black (6-pairs), Size: X-Large
Made well. Bought for my Son. He only likes Under Armour brand of socks. Only socks he buys.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 21, 2026
L
Verified Purchase
LC
West Palm Beach, US
★★★★★ 5
LOVE THEM!!
Size: Small, Color: (001) Black / Black / Castlerock
LOVE! These socks are so comfortable! I wear a 5 in women's and a 3 in big kid shoes. The small fit me perfectly. I see where some say they run small but I can't say that was an issue for me. They are "snug" but thats what you want with a no show sock. I feel they have support vs the ones i used to buy at Walmart. They are very soft! I am actually buying more today and throwing my other ones in the trash!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 18, 2026
L
Verified Purchase
Lucy Mejia
Carnegie, US
★★★★★ 5
So will not write down your foot
Size: Medium, Color: (001) Black / Black / Castlerock
I love these socks. They have a little bit of gel on the top of the heel for support in your tennis shoes and so your socks don’t write down. Very good quality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026

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