$153.00 - $257.00
Varies - Depends on Product Options
Vehicle Specific
Fits Following Model(s):
  • View Product Options
Product Options
Add To Cart
Have a Question? 888.584.4732
Ask a Specialist: Live Chat
Authorized Dealer:Beat-Sonic
Low Prices. Price match guarantee
Guaranteed Fitment. Always the correct part
In-House Experts. We know our products
Easy Returns. Quick & Hassle Free
Select Product Options
Do not see your vehicle here?   View similar products
Total: $0.00
Add To CartCancel

Product Details

Beat-Sonic Car Accessories

Head Unit Integration Interface by Beat-Sonic®. Replace your factory stereo with an aftermarket head unit. Focused on innovation and quality, Beat-Sonic is sure to enhance your driving experience. You will definitely enjoy every minute behind the wheel!


  • Seamless installation using plug and play - No splicing of factory wires
  • Compatible with all the major aftermarket navigation/stereo manufacturers
  • Expertly crafted from superior materials
  • Provides exceptional reliability
  • Ensures everlasting service life

Beat-Sonic® was founded in Japan in 1991 and has quickly grown from a small manufacturer to a leader in the automotive audio/video entertainment industry. The company makes every effort to keep abreast of the latest technologies and greatest breakthroughs in today's fast-developing aftermarket. Its mission is to make a progressive improvement in quality and design of their products in order to go beyond the expectations of the most fastidious customers. The brand has a strong spirit of innovation and total dedication to superiority. Beat-Sonic has maintained the status of a forward-thinking, creative company that is focused on crafting top-notch products.

Warranty Information

Beat-Sonic products come with a limited warranty covering manufacurer's defects. Products that shows signs of abuse and inproper installation and usage will not be covered under our policy. All interface adapters, modules, video amplifiers, and rear back up cameras are covered for 1 year from the date of purchase. All mobile holders are covered for 90 days.

Magnuson-Moss Warranty Act:
Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)) Learn More

Product Reviews


Every Customer can leave a review about our service and the product that was purchased. In order to leave your review for your new product, please follow the link in the email you receive after completing your purchase. You can rate appearance, ease of installation, price/value and product quality.

Beat-Sonic® - Head Unit Integration Interface
Beat-Sonic® - Head Unit Integration Interface
Average Rating: 4.5 of 5
4.8 of 5
Beat-Sonic SLA-91 Integration Interface!
"Attention " all Lexus IS300 owners 2002-2005 without navigation option! This just might be the very best aftermarket stereo interface adapter available for our vehicles! If you would like to avoid installing a new amplifier and running speaker wires to your rear speakers, this Beat-Sonic SLA-91 adapter is the very best option i have found. It allow you to upgrade your vehicle with an aftermarket stereo,that provides one with all the current technology. This product is a plug and play unit, no cutting into your oem wiring harness, a simple solution to a complex problem! And still retain your OEM amplifier! The product is of "High Quality" though a little pricey! Beat -Sonic did there homework , and produced a fine product! And CARID thank you for teaming up with Beat-Sonic , and providing another outlet to purchase this unit without having to buy directly from the manufacturer! Mine is working fantastic in my Lexus IS300 2003! Sincerely, Brad D.
BPosted by (San Jose, CA) /
2003 Lexus IS
Was this review helpful for you? Yes
4.8 of 5
Plug And Play
The SLA-21A is the quick and easy way to install an aftermarket system in your car. No cutting plugs or wires. You can go back to factory at any time in minutes if so desired. I would and most likely buy again or another one for my other cars.
SPosted by (Des Plaines, IL) /
1995 Lexus LS
Was this review helpful for you? Yes
4.8 of 5
Great Product!
Outstanding product. Local installer wanted over $500 to hard wire my double din receiver. The install would have by passed the factory amp and eliminate the factory sub woofer. The Beat-Sonic wiring harness installed quickly and retained factory amp and subwoofer. Install took 1/2 - 3/4 hour and was very easy for half the price.
JPosted by (Springboro, OH) /
1997 Lexus LS
Was this review helpful for you? Yes
4.5 of 5
Great Product
This harness was exactly what I was looking for. It comes with extremely easy to understand instructions and was a direct plug and play for my radio. I was holding off on buying it because it is a little expensive considering you can buy harness' for other radios at a fraction of the price but once I finally made the decision to purchase it, I was not disappointed. For anyone looking for a harness for their UCF21 LS400, I would highly recommend buying this product.
JPosted by (Media, PA) /
2000 Lexus LS
Was this review helpful for you? Yes
5 of 5
The Best Option!
When I receive the Beat-Sonic head unit integration I was instantly impressed. The aluminum housing was top quality. I tried the Metra Tyot-01 and it was a complete piece of junk compared to this. It had a cheap plastic housing, you had to play with the gain setting that you could never seem to get correct and the sound quality was horrible. Beat-Sonic knock it out of the park. It's really just plug and play and it sounds a lot better. They only function I lost was the fade between front and rear speakers but that really didn't bother. I have to admit the price was a lot more than I wanted to spend but after trying to get the Metra working correctly for a week it was well worth it.
JPosted by (San Pedro, CA) /
2004 Lexus RX
Was this review helpful for you? Yes
5 of 5
I tried all harnesses n it costed me too much for no reason, then i saw this product n i wondered why i was suffering all along, for the price its worth the feeling of success. And it was shipped so quick. Thanx guys.;
PPosted by (Methuen, MA) /
2007 Lexus RX
Was this review helpful for you? Yes
3 of 5
Beatsonic Review
It went well. My radio had RCA speaker connections so I had to mod the wiring harness for it. Also you need to add adding the vehicle ground to the wiring diagram.
MPosted by (Branchville, NJ) /
2002 Lexus SC
Was this review helpful for you? Yes
Buy This Product

All manufacturer names, symbols, and descriptions, used in our images and text are used solely for identification purposes only.
It is neither inferred nor implied that any item sold by CARiD.com is a product authorized by or in any way connected with any vehicle manufacturers displayed on this page.