Sound Evolution Logon Car Audio/Car Security

LOGON AUTO MALLThis is an online shop run by LOGON.
We have a wide selection of carefully selected car audio products, including speaker kits designed specifically for the vehicle model!

https://mall.logon.gr.jp

25th Anniversary EVENTOur store will celebrate its 25th anniversary in 2025.
To commemorate this, we will be holding a 25th anniversary event every month!

Click for details!

25th Air Conditioner Maintenance CampaignTo celebrate our 25th anniversary, we will provide free air conditioning maintenance to customers who have ordered car audio and car security plans online!In addition, we will also be installing it at a campaign price if only air conditioner maintenance is required!
Additional additive Wako's Power Air Conditioner 1234 is now available!

Click for details!

Established for over 20 years, sold over 8,000 units per year, sold over 300 units per year, and achieved numerous sales and contest prizes! This is an online shopping site operated by Sound Evolution Onlog, which has a reliable and proven track record.

Website Renewal Announcement!

Our website has been fully renewed.

The previous website was created about 15 years ago, and we have been improving it over time. This time, based on the content and database cultivated from the previous website, we spent 5 years collecting feedback from customers to make it more accessible. We aimed to eliminate the hesitation of entering a pro shop, allow pricing to be nearly finalized, and offer more convenient after-sales service to our customers.

The renewed website reflects my strong demands and will continue to evolve significantly.

We plan to add features to make the site more interactive and fun, like customizing purchases or creating a system that suggests plans interactively even for beginners.

We hope this website brings our shop closer to you and eliminates the anxiety of visiting a shop in person.

Creating this system has been a monumental task, and at times I wish I could just plug a USB into my brain to speed up the process. But we aim to deliver a highly precise website through continuous updates.

Our goal is to make a website that's enjoyable! We're working hard!!

Owner

Car theft information

Prefectures with the most car thefts 1st place Chiba 3rd place Saitama Why?Click here

Regarding efforts to revise on-board failure diagnosis equipment

When installing electrical equipment, we always use a vehicle diagnostic device to check for errors. If an error occurs, we will report it to the owner in advance and strive to return the car in the same condition as before the work.

From October 2024 onwards, vehicles that have errors during vehicle inspections may not pass the inspection, so future installation work will require sufficient knowledge and equipment.

At our shop, we not only check for errors when the car is brought in, but we can also print out and give you the OBD diagnostic results after the work is done.

Sound Evolution Logon is Chiba Prefecture's largest car audio and car security specialty store.

Many customers visit us from distant areas. Why? It's because of our demo board boasting the best speaker variety in Japan! You can compare different speakers and discover “What kind of sound do I personally like?” together with us.

From upgrading factory audio systems to making smartphone and Bluetooth connections more seamless, using digital audio players (DAPs) in your car, or replacing stock speakers with everything from trade-in types to true high-end ones, we support a wide range of both domestic and imported vehicles!

Our work environment is fully equipped. With climate-controlled pits to protect your car, precision woodworking equipment, and diagnostic tools compatible with all manufacturers, we ensure perfect checks. We also handle the latest HFC-1234yf refrigerant gas and use trusted Snap-on tools for high-quality finishing.

Vehicles left in our care are protected around the clock by ALSOK and 10 security cameras, offering 24/7/365 monitoring. You can leave your car with complete peace of mind.

If you're thinking “I'd like to tweak the sound a bit” or “I want to take my time choosing the right one”, please feel free to consult with us. An exciting experience is waiting for you!

demo board
A special page has been opened that allows for Japan's only types and listening patterns! !
Special page opened! !

Work on your car at the optimal temperature
air conditioner pit

latest woodworking equipment
Shorter work time and accuracy

computer diagnostic machine
Diagnostic equipment compatible with all manufacturers

Scratch prevention
thorough body masking

security
24/7 monitoring system with ALSOK and 10 cameras

Click here for the earliest car security installation date!

IGLA 2025-07-28 (Mon)

Grgo 2025-08-18 (Mon)

Panthera 2025-08-18 (Mon)

\Payment is now easier!/ In addition to online payment, you can pay without visiting the store! After confirming the details over the phone, you can send an email and pay by card. "I want to apply now, but I can't go..." Don't worry if that happens!