Skip to content

StarTech.com USB Stereo Audio Adapter External Sound Card

Marsoni M251S
Sale price$31.95
Pay 4 payments of $7.99 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
StarTech.com USB Stereo Audio Adapter External Sound CardAdd headphone and MIC audio connectors through USB This USB Audio adapter converts a USB port to an audio port, letting you add a headset and microphone to your computer without the need to unplug other devices. Compliant with USB 2. 0 and USB audio device specification 1. 0, the USB audio adapter couldn't be any simpler to install. It's as easy as connecting the adapter to an available USB 2. 0 port, then connecting your audio devices to the provided
Easy Shipping

Quick Dispatch:

Your StarTech.com USB Stereo Audio Adapter External Sound Card orders ship within 1-2 business days.

Delivery Options:

  • Standard: 3-7 business days
  • Fast: 2-3 business days
  • Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your StarTech.com USB Stereo Audio Adapter External Sound Card ships.

Need Help?
Questions about StarTech.com USB Stereo Audio Adapter External Sound Card, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for StarTech.com USB Stereo Audio Adapter External Sound Card in your area.

Get Shipping Estimates

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
4.7 ★★★★★
Based on 888 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
J
Verified Purchase
james
Natrona Heights, US
★★★★★ 5
Would recommend
Size: 10 sqft
I used this sound deadening material in my car during an audio and interior upgrade, and the difference was noticeable immediately. Road noise, vibrations, and rattling were reduced a lot, especially on the doors and floor panels. The car feels much quieter and more solid while driving now. The material was easy to cut and apply, and the adhesive stuck very well without peeling up. It has a quality feel to it and conforms nicely around curves and tight areas. I also noticed my speakers sound cleaner and have better bass response after installing it. For the price, this sound deadening material is a great value and definitely worth it if you want a quieter ride and better overall sound quality in your vehicle.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 6, 2026
D
Verified Purchase
David
Waukegan, US
★★★★★ 5
Worth it!
Size: 50 sqft
I was worried it wouldn't work as well since it's 50 mil and I thought I got the wrong thing. Nope! Works great. Did all four doors on my 93 civic and I have enough for the floor I think. Solid price. Noise reduced by about 5 decibels hive difference. Very sticky and easy to apply I'm so happy I was able to cover most all of my car. If I need more, definitely buying this since I got so much extra and I thought I would. PS: that five decibel thing is only with the four doors. My firewall is next and then my floor, but it's such a huge difference
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 2, 2026
T
Verified Purchase
Teresa A. Patterson
Alexandria, US
★★★★★ 5
Quiet your vehicle noises
Size: 50 sqft
Put this in our high roof van and couldn’t believe how much quieter it was at once. Really cut down on the vibration noise Nice and easy to install just peel n stick. Was also easy to cut with scissors for smaller areas. Seemed to be really nice quality. Didn’t notice any odor.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 9, 2026
S
Verified Purchase
Stephanie
Carnegie, US
★★★★★ 5
Sound deadening the Hot Rod
Size: 20 sqft, Size: 20 sqft
Works well, good value for the money. It’s very sticky and conforms to what you are applying it to. One 20 sq ft box did approximately the passenger side
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 3, 2026
M
Verified Purchase
M. Del
San Leandro, US
★★★★★ 5
Good stuff
Size: 50 sqft, Size: 50 sqft
Good stuff. I did a lot of work on my 91 Toyota Land Cruiser 3FE. I did the inside and outside doors, as well as the under-hood area, with some extra work. I like this stuff. It sticks down good but you have to clean your surface so there's a good grip. I think these are going to do well for noise cancellation. The deadening material does well with absorbing vibrations too. But the install roller tools it will come in handy. Trust me trying to do it by hand is not worth it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 6, 2026

recommand products