Sound Evolution Logon Car Audio/Car Security

Founding

year

More than

9565

cars in total

2026/02/16 (Mon) Currently

yearly

300

cars annually

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.

For customers who wish to visit our store

Sunday

Monday

Tuesday

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Business days for reservations

Regular Holiday

Business days for reservations

Our store is closed on Tuesdays and Wednesdays, but for the time being, we are accepting customers by appointment only.
We will provide careful service to customers who make a reservation so that they can visit with peace of mind.

If you would like to consult or have work done on your car, we recommend that you make a reservation in advance to ensure a smooth service.

In particular, for express installation of IGLA and installation of car security, we may be able to accommodate even if the reservation slots are filled, so please consult us first.

Please note that we may not be able to accommodate your desired date due to changes in the delivery date of the new car, so please make your reservation with plenty of time.

In addition, air conditioner refreshment can be done on the same day, so you can feel free to use it even if there are no slots on the reservation calendar.

Inquiry Form

We are honored to announce that we achieved 2nd place in the recent Security Sales Contest!

While we have proudly earned 1st place multiple times in Car Audio Sales Contests, this is our very first time ranking among the top in the Security category.
There are many specialty shops dedicated solely to car security or car audio, but being recognized in both fields is the result of our unwavering commitment since the very beginning: “Never compromise on either car audio or security.” Reaching this milestone in our 25th anniversary year is something we are truly delighted with and deeply proud of.
Above all, this achievement was only possible thanks to the trust and support of our valued customers. We sincerely appreciate your continued patronage.
Although we finished in 2nd place this time, we will continue striving for 1st place, improving our technical expertise, and enhancing our services. All of our staff will keep giving their best efforts, and we look forward to your continued support!

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

LOGON Event InformationWe provide information about car audio and car security events at our store here.
Please take a look!!

Click for details!

Introducing the ultimate audio plan exclusively for the 40 Series Alphard!

The look is completely genuine. Yet, the sound is something else.
LOGON's latest custom stock audio aims to deliver sound that "exceeds premium genuine" without altering the interior of the 40 series Alphard/Vellfire, without any modifications or sacrificing space.

We don't just stop at the speakers, we also optimize the foundation of the sound, including the DSP amplifier. We thoroughly refine everything from crispness and power to vocal positioning and depth, to a level where you'll wonder, "Is this really genuine?"

We can also restore it to its original state when you sell it. The beauty of the 40 series is preserved, and the sound will move your heart every time you drive.

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 with errors at the time of vehicle inspection 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 hand over the OBD diagnosis results after the work.

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

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!