Sound & Security
Captivate with sound. Protect what's yours.
Two pillars of LOGON.
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
While our store is closed on Tuesdays and Wednesdays, for the time being, we are accepting visitors under a fully reservation-based system.
We will provide careful support so that customers who have made reservations can visit with peace of mind.
If you would like to consult about your vehicle or request work, we recommend making a reservation in advance to ensure a smooth guide.
In particular, regarding IGLA expedited installation and car security system installation, we may be able to accommodate even when reservation slots are fully booked, so please feel free to contact us first.
Please note that due to changes in new vehicle delivery dates, for example, we may not be able to accept service on your preferred date, so we kindly ask that you book with some flexibility.
Also, since air conditioner refresh services can be performed on the day, you are welcome to use them even if there are no openings in the reservation calendar.
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!
LOGON Event InformationWe provide information about car audio and car security events at our store here.Please take a look!!
We propose the best car security system to match your vehicle, parking environment, and usage.
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
Sound Evolution Logon is Chiba Prefecture's largest car audio and car security specialty store.
demo board
A special page has been opened that allows for Japan's only types and listening patterns!
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Special page opened!
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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
Car Security is the shortest normal installation date!
Latest car audio construction examples
LEXUS2026/05/11 (Mon) NEW
RCGSC・AVC・ASC1#系
MINI2026/05/10 (Sun) NEW
5 DOORF55
TOYOTA2026/04/25 (Sat)
LAND CRUISER 250250W
HONDA2026/04/25 (Sat)
STEPWAGONRP6/7/8
Other2026/04/18 (Sat)
Other取り付け例以外
LAND_ROVER2026/04/18 (Sat)
DEFENDERDefender
Latest car security construction examples
TOYOTA2026/05/12 (Tue) NEW
LAND CRUISER 70GDJ76W
TOYOTA2026/05/12 (Tue) NEW
LAND CRUISER 70GDJ76W
TOYOTA2026/05/11 (Mon) NEW
VELLFIRE6AA-TAHA4#系
HONDA2026/05/11 (Mon) NEW
CIVIC TYPE-RFL5
TOYOTA2026/05/11 (Mon) NEW
HARRIER6BA-MXUA80
TOYOTA2026/05/11 (Mon) NEW
LAND CRUISER 70GDJ76W
