Expert installation of high-end audio systems, including speakers, subwoofers, and head units with Apple CarPlay and Bluetooth integration.
Professional installation of remote starters, alarm systems, and passive locking features for enhanced convenience and vehicle security.
Seamless installation of backup cameras and dash cams with hidden wiring and no damage to your vehicle's interior.
Custom installation of aftermarket light kits, parking alerts, and other automotive accessories for improved safety and style.
Diagnostic and repair services for car electronics, plus personalized consultations to recommend the right systems for your needs.
The guys at Precision Sound have helped me twice now. Once with a custom chinese infinity head unit that no one else would install. It came out great. The second with an aftermarket light kit for my son's Audi A5. They helped with identifying the right kit to scheduling the installation. Afterwards, John took his time, showing me how it all worked. Installating it in the Audi was not easy. I could tell that it was done right with painstaking attention to detail. Thanks so much John and the Precision Sound Team!
One star is generous. I originally went in for a quote on a remote starter and passive locking (car locks 30 seconds after the last door closes). I scheduled an appointment for 11/4 at 9 AM and dropped the car off the night before. I was told it would take 3–4 hours and they’d call when it was done. They didn’t. Of course, they didn’t. Hours 3, 4, 5, and 6 went by with zero communication — not even the bare minimum courtesy you’d expect from a half-functioning business. I finally called around 3 PM and was told they were “wiring the module” and needed another hour. I arrived at 4:15 PM — still not done. So I sat and waited until 5:15 PM, after the owner had already bailed for the day, before the car was finally finished. As I was being shown the fob, I asked about the passive locking. The tech casually hits me with, “No, you just lock it with the fob.” So after 8 hours, they couldn’t even manage to install the one thing I specifically requested. His excuse? “No one told me.” The lack of communication in this place is honestly impressive — but only if the goal is to fail. He then told me to come back the next day so he could “just drop the dash and turn it on,” like it was as simple as flipping a light switch he forgot existed. I came back the next day — and shocker, that tech wasn’t there. Instead, the owner, John, steps out and immediately contradicts everything his own employee said. He calls the manufacturer and, surprise surprise, the module they installed didn’t even support passive locking in the first place. So yes, after wasting an entire day of my time, they had installed the completely wrong hardware. John said he would overnight the correct module and call me when it arrived. He didn’t. Naturally. Thursday came and went with no call. I had to call them on Friday, only to be told I now needed yet another full appointment. When I asked how long this so-called “easy fix” was going to take, after hearing that line repeatedly, John responded with the most useless answer imaginable: “It takes whatever it takes. We’ll call you.” Translation: We have no idea what we’re doing, please stop expecting competence. So I dropped the car off Sunday night for a Monday 9 AM appointment. Once again, the entire day passed with zero communication whatsoever. I called at 3:30 PM — same copy-and-paste excuse: “We’re wiring the module, another hour.” No call after that, obviously. At 5:03 PM, John leaves a voicemail claiming they’re closing because I “wasn’t there,” even though I was literally five minutes away and had received no updates besides the one call I made. I called back instantly — straight to voicemail. At 5:07 PM, I arrived to find my car still sitting inside the shop and the place completely closed up. They didn’t even have the decency to wait the extra two minutes after leaving the voicemail they should’ve left hours earlier. This shop is a complete joke. Zero communication, zero professionalism, zero accountability, and nonstop excuses. Two full appointments, two modules, and several days of wasted time — and they still couldn’t deliver the service I originally requested. And to make it worse, the half-baked system they DID install doesn’t even work correctly: • If any door except the driver’s door is open, the system still locks the vehicle — totally incorrect behavior. • Once the vehicle auto-locks, it won’t unlock with the fob or the app after about 5 minutes. • Only one of the two fobs actually works. • The “alarm” is a sad joke — all it does is flash the high beams like the car is trying to signal for help. At this point, you could hand the tools to a random passerby and get a cleaner, more accurate installation. Truly, anyone off the street would’ve done a better job. Also, their claim to be BBB-accredited is false, according to the official BBB website.
I recently had a dash-cam installed at Precision Sound for my Range Rover Sport, and the experience exceeded my expectations. The team’s workmanship is simply top-notch—no visible cables, no damage to my vehicle, and a seamless installation process from start to finish. The attention to detail and level of professionalism exhibited by the staff truly set them apart. In a world where good service is hard to find, Precision Sound stands as a beacon of excellence. I highly recommend their services for anyone seeking quality and peace of mind.
Talked to owner Gene about installing a reverse parking alert system onto our 20yo Honda Accord, so it is safer for the young new driver in our family. Gene was clear in explaining the work and expectations. The installation was done within the time promised and it worked well. This shop has been around since 1987. The place is clean, tidy and professional. It was a good experience and I highly recommend their services.
Fantastic Experience. I have a 2002 Mustang Saleen convertible and was hesitant to remove original parts. Met with John and got a quote .Did not over sell me and recommended the perfect system with Apple car play, bluetooth, back-up cam, killer speakers and subwoofer. Made appointment the following week and they installed in 2 days. John was in contact with me multiple times with updates on installation progress and one change that had to be made. Needless to say the system was installed to perfection and flat out rocks!! Highly recommend this company!!

Premium Car Audio & Electronics Installation Since 1987
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Precision Sound is a trusted electronics store in Dedham, MA, specializing in high-quality car audio systems, custom installations, and automotive electronics. With decades of experience since 1987, we serve car enthusiasts and everyday drivers with expert services like remote starters, backup cameras, dash cams, and speaker upgrades. Our team, including John and Gene, is dedicated to precision workmanship, clear communication, and customer satisfaction, ensuring your vehicle gets the perfect upgrade with attention to detail.
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