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Marlborough, MA

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Mega Watt Car Stereo & Security

3.8 (13 reviews)
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Jdk Auto Sound & Security - WWW.JDKAUTOSOUND.COM

Jdk Auto Sound & Security

(29 reviews)

I could not be more pleased with the work John and the team at JDK Auto Sound & Security performed…read moreon my 2020 BMW 840i. I came to JDK looking for a genuinely high-end, professionally integrated radar and laser system--not simply equipment added to the car. After a great deal of research and discussion with John, we ultimately went with the Escort REDLINE Ci 360c, including externally mounted front and rear radar receivers and a five-head laser-shifter configuration--three front and two rear. The installation is exceptional. What impressed me most was the attention to detail. The exterior components are remarkably discreet and integrated into the BMW in a way that looks intentional rather than aftermarket. Inside the vehicle, John positioned the Escort display immediately adjacent to the instrument cluster, where the information is easy to acquire without becoming a distraction. The control interface is accessible but neatly tucked away. That mattered enormously to me because the user interface was one of my highest priorities in selecting this system. This was not an inexpensive installation, and I did not expect it to be. When investing in equipment at this level, my priorities are quality, confidence, craftsmanship and knowing that the installation has been done correctly. JDK delivered on all four. I also appreciated John's willingness to discuss different systems and approaches with me rather than simply bolt in equipment and send me on my way. I did my homework, had strong opinions about what I ultimately wanted, and John worked with me to turn that decision into a very clean, professional installation. The finished product feels like it belongs in the BMW. That is exactly what I wanted. Five stars for JDK Auto Sound & Security. If you're considering a sophisticated custom-installed radar/laser system and care as much about the quality of the installation as the equipment itself, I would absolutely recommend talking with John. Outstanding work--and a very satisfied customer.

Like an idiot I couldn't figure out how to clear my Kenwood stereo of all the phones downloaded on…read moremy car stereo. One stop to see John (on his lunch break) and he had it back up and running in no time. He not only knows his stuff, but he's a really nice guy. I wouldn't take my car anywhere else!

Luxury Details

Luxury Details

(40 reviews)

No idea why the reviews here ain't higher. Matt is extremely knowledgeable and professional with…read morehis work. I was turned away by a couple of installers regarding a remote start on a Land Rover Vehicle. And to those that said they could do the install, not many gave me the assurance that Matt did. Install went very well, and I felt price was very fair for the quality of work. In fact I dropped by earlier than he was expecting and managed to check out the dissected car. He had actually went above and beyond in wrapping my cars parts while they were out of the car, to prevent scratches or damages to it. Even when the car was re-assembled. There was zero rattles, and he wrapped up loose bits in heat insulation and some dynamat. Absolutely satisfied with his work. And will be back for radar and laser coverage soon!

I came to luxury details to get my plumbing van ready for the road. In all honesty the end result…read morewas better than I thought. Matt, Jordan, and fred knocked it out of the park with everything. From the design and wrap by Fred, to all the lights and interior work by Jordan. This thing definitely stands out on the road and performs just as I need it to. Everything they did was to help me make my job easier when I'm at a customers house. They mounted all my shelving including lights in the shelves to be able to see my stock at night. I can't thank them enough for everything. Highly recommend them for any work vehicle service or new install.

Precision Sound

Precision Sound

(45 reviews)

Absolutely incredible service! The team was extremely knowledgeable, answered all of my questions,…read moreand made the entire process quick and convenient. They were professional, helpful, and efficient from start to finish. I highly recommend this company to anyone looking for quality speakers and outstanding customer service. I'll definitely be coming back for future purchases! 100% recommend for any vehicle speaker needs.

One star is generous. I originally went in for a quote on a remote starter and passive locking (car…read morelocks 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. I genuinely don't think it could've come out any worse unless they intentionally tried to mess it up. Absolute bunch of morons, with a bunch of fake signage claiming they're the best. I think their BBB Accredited sticker on their door is funny, given that the BBB website says "Not Accredited" in big, bold letters.

Mega Watt Car Stereo & Security - stereo_installation - Updated October 2026

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