Systems Unlimited

I've done a horrible disservice to Charles and the crew by not leaving a review mush sooner.
Back in June of 2023, I had the need to drive my 1985 Porsche 911 1200 miles and back, for a large PCA event. I just couldn't do it listening to the garbage sound quality. I've struggled to get any sort of low end bass at all out of this car since 2007, so I took it to Systems Unlimited.
They custom-built a small subwoofer enclosure that fit perfectly in place behind the passenger seat, installed an Audison DSP amplifier under the seat, cleaned up the wiring issues of an ancient A/D/S amplifier install, and dropped in a new bluetooth single-din head unit, as well. They added some sound deadening and weatherproofing to the doors, and even repaired a cracked door-pocket.
The workmanship is immaculate, and the sound quality has been transformed into something amazing.
This car is now truly a pleasure to drive.

Thank you, Charles and crew!

This is the only place I will allow to touch my vehicle. Systems Unlimited provided one of the best customer experiences I have ever had. Charles and his team offered full transparency through the entire process. I was able to see the wiring and thought process behind every decision in real time. (I have never seen a cleaner wiring job). I did a full Audison system, I have had plenty of audio systems that I considered high end. Boy was I wrong. The combination sound deadening, audison speakers and amp with DSP as well as custom box with 5” subs has proven to be a perfect system. My 992 Targa now has a symphony in it at all times. When I received the car back there was zero traces that everything had been replaced (other then the sub box that somehow looks factory Porsche).
They somehow tucked a sub box in a spot that sits beneath the Targa top when folded down. Also custom printed mounts for door speakers and wiring. Crazy stuff happening in that shop. I can’t imagine a job they couldn’t handle.
I wish I found these guys sooner.

I had two Escort radar-laser systems as well as a high end Audio installed at another shop.
I contacted Systems Unlimited to up grade my radar-laser system to a Radenso Ultimate Edition. While my 2014 Porsche 911 Carrera S Cabriolet was in the shop, I experienced a sound system in another 911 they had done and chose to upgrade my audio system as well!
For those seeking over the top Craft and Workmanship on custom car stereo and radar-laser defense. Systems Unlimited is the Best!
From disassembly to install every nut, bolt, screw, was put in place and the work looks like it was Factory installed. You would not know the upgraded system until you Hear, Feel, and Experience it for yourself. It is AWSOME!
The Professional Custom Installers and owner Charles are hands on from beginning to the end of project. No project is too big or small and he will work with your price point.
Charles will follow up to make sure your custom install is working without issues.
A Very Satisfied Customer!

I went to Systems Unlimited to install a dashcam/rear camera in my 2018 Honda Civic Type R and in my 2021 Dodge Challenger. They did an incredible job. Each set of cameras were installed in one day, they explained the process to me, confirmed exactly where I'd like them placed, and explained the system to me when I picked up my car(s). Very professional job with clear attention to detail. I checked things over carefully at home and everything was seamlessly installed. Everyone I worked with was very helpful and clearly take pride in their work. Would highly recommend!

Charles is absolutely amazing. He just as interested in you as a person as he is about his passion, Creating and installing audio solutions tailored to each individuals needs. Such a great guy to work with. I would recommend him to anyone for any mid to high end quality work. 🙌🏼

I purchased a 2021 RAV4 Prime in July and I wanted to get it sound damped to make the ride a little quieter. I called and spoke with Charles. He invited me down to the shop to see the type of sound damping they offer.

Charles was very accommodating and before I left, I took a listen to the sound system in his car. It had been a few cars since I had a custom system (Zapco) and decided to go ahead and upgrade the audio at the same time.

The original plan was to keep my existing drivers, replace the factory JBL amp with an Arc Audio 8-channel DSP amp and a second amp for the subwoofer. He also wanted to find a way to re-enforce the JBL sub enclosure, which is plastic. At some point he asked if we could replace the spare tire with a custom subwoofer enclosure and then we could use a larger sub and / or two subs, which we ended up doing.

The one issue I was stuck on is that we would only have 8-channels of DSP, so the rear fill would be mono and we could not time align them individually. I up-sold myself on using two Arc Audio 1000-watt DSP amps. A 6-channel DSP for the front speakers (Door, Dash and A-Pillar) and a 4-channel DSP amp for the rear fill and then bridge the other two channels for the dual subs. Given the new power from the larger amps, Charles upgraded all of the stock drivers with new ones from Morel because the factory could not handle the power. In fact, the factory Amp/Sub limits the sub output, which the new system is not limited by.

While I was visiting family, Charles arranged for Brian Mitchel, from Arc Audio, to re-calibrate my sound system. Brian wins a lot of the audio competitions and he calibrated my vehicle like his competition vehicle and I could not be happier with the results.

While my Prime was being worked on, I found other upgrades I wanted to do and imported some parts from Japan, including TRD Performance Dampers, TRD Door Stabilizers, a Strut Tower Bar, LED lighting, etc… I asked Charles if he could have his team install all of this and bill me and he was very accommodating.

I am planning to go back to Systems Unlimited later this year to have some more work done, their attention to detail is second to none. It was not cheap, but I feel this is a case of you get what you pay for. They do immaculate work and I could not be happier with the results!

Went back for some additional work in September of 2020. Wanted a custom cargo floor to show off the amps and to vent the heat from that area. Also had a throttle controller and Scan Gauge III I wanted installed with a custom faceplate. Photos attached. As usual, excellent work that is second to none.

Ever wonder why when you walk into Systems Unlimited there are exotic cars or very high end projects being done? It's because they are the best. They can be trusted to work on these cars and do these big installs. I came to them for a Radenso + ALP install on my brand new Ferrari 812 SuperFast. That would be a radar detector and laser jammer setup. I was very clear that I DID NOT want the jammer heads to be seen, and they were more than happy to accommodate this. I also thew them a curveball wanting to put the controller head in a location that isn't common for these cars. Normally they are installed in the little cubby area below the reverse, auto, and PS buttons. This makes them hard to reach from the driver position, and you have to look down and completely away from the road to see the buttons and screen. Other installers will put it on the side of the driveshaft tunnel where you absolutely can't see the buttons. I requested them to put it below my other vehicle controls, also where I could easily see the screen through the steering wheel. They were more than happy to accomplish this.

I dropped my car off and went over the whole install with them. They brought the car in and got started on it a couple days later while they finished up a couple other jobs. They made sure to completely tape up and cover in plastic any area near where they were working to prevent against any scratches, dings, or mars. They accomplished the rear jammer head install first, hiding the heads behind where my rear reflectors were. They use a black smoked acrylic for a stealthy touch, and it matches the car a lot better than the red. I was able to stop by and check it out, and grab pictures while they were doing this. At this time we also talked about smoking my side markers, which they were happy to do while doing the radar detector and laser jammer install. They very professionally disassembled the car to make sure and hide all the wires and run them without excessive lengths of wire left behind. All the wires are also wrapped in a wire loom, and not the cheap plastic corrugated stuff either. Everything at Systems Unlimited is premium. We ended up with 3 jammer heads on the rear of the car for extra coverage.

They began on the front of the car, removing the front bumper and working on installing the front jammer heads in suitable locations. They were able to use factory bolt holes for all of the mount locations to avoid drilling into my car. After that, they ran those wires into the passenger cabin, making sure to only use the amount of wire they would need, and also wrapping it in a quality wire loom.

With all the jammer heads and radar detector heads mounted, it was time to figure out the controller head. This is the part that took the longest as they had to custom design a piece, and then make sure it fit perfectly. Once they had a perfectly fit piece they used body filler to mold it perfectly against the dash. There were no holes drilled in the dash either, they were able to run the wire to the controller along the dash where you can't see it, and then into the dash in a natural opening. This was very key as I really didn't want my dash destroyed in the process if I ever wanted it removed (I won't).

At the end of the install they made sure everything was functional, did all the updates necessary, and cleaned up the car. I was very impressed overall with the quality and condition of the install. Was it more expensive than other quotes I got? Yes, but it sure as hell was worth every penny. No other 812SF has an install like mine, and I think my car has the BEST radar/laser install of any Ferrari 812 out there. No visible jammer heads hanging off the car, less hassle from the cops down the road.

TL;DR
Systems Unlimited does the BEST job in the area, and can certainly be trusted with your car to do an amazing job. They are not going to be the cheapest, but their work is very high quality and is great value for what you get. I will certainly be back with other cars, and have be recommending them to everyone.

I came in there knowing nothing about audio packages. All I knew was that I was tired of the old outdated blue tooth setup in my car and wanted something up to date. I also wanted a better sounding system with reduced road noise.

Charles walked me through the process, came up with a setup for my prius, I put down a deposit, and a few days later showed up... and was impressed. Even with a basic car like mine (Bugattis and Porsches all around the shop) they spared no attention to detail...I was surprised as well by how quick he was able to get my car in with all the other jobs they had going on.

This is the very reason I avoided the car Toys and Best Buys of the audio installation world. I wanted something done by people who appreciate their craft. I don't mind paying a little extra for this type of quality work, because I wanted the job done correctly.

Mike did a fantastic job showing me what they did when I came in to pick it up, we tested it out (I'd never used android auto before), he answered every single question I had, explaining the why's and how's.

As for the setup... Its clean, indiscreet (how I wanted it), and sounds amazing. The car looks exactly the same except where all the oem speakers used to be, there's updated quality speakers that pack a punch. Zero rattling and the noise is very contained with the sound dampening they did. Highly recommend. Thank you again fellas. All the best.

After purchasing my first Land Rover vehicle, I quickly realized that an after market stereo installation wouldn't be a simple task. The high end vehicles manufactured these days are rolling computers that require a high level of expertise to achieve full functioning integration. The team at Systems Unlimited possesses the expertise to seamlessly integrate electronic equipment into any vehicle. I was extremely impressed by the quality of work and the real time detailed communication throughout the entire installation process. Needless to say I'am now enjoying my new stereo everyday. So if your music experience matters to you, visit Systems Unlimited.

I purchased a used 2012 Mercedes coupe from a friend. The vehicle did not have a back up camera and due to limited visibility it really needed one. Contacted Charles at Systems Unlimited and he gave me a few options over the phone and set an appointment for a week later. Stoped the car off and in about 3 hours later it was finished. Can remember the name of the guy that did the actual work but he did a great job. Had a minor issue upon inspecting the work and he and Charles took a look and promptly fixed it in a couple of minutes. The work was totally professional and if you didn't know you would think it came standard from the factory. I am totally satisfied with there work and love my car even more now that backing is not such a pain. Great job Systems Unlimited!

I just recently had my stereo system in my truck replaced at Systems Unlimited... And let me tell you, these guys do amazing work! I could not be happier!! My new system sounds fantastic, the quality of the installation is top shelf, and the products they offer are superlative!!! I definitely recommend you having your next quality sound system installed here!!!!!! A big thank you to Charles, and Jorge!! 👍👍

*Update*
My new stereo reset itself to factory default... The tuning that Jorge did was lost, and my stereo sounded terrible... I brought my truck back in, and Charles and Jorge fixed me right up!! It's even better than it was before!!! Seriously why haven't you already decided to buy your next stereo from these guys? Cuz from now on, this is the only place I'm going for my vehicle's sound system's.. they truly are Unlimited!!! 🤟😆🤟

Systems Unlimited stands at the pinnacle of Seattle area custom systems and I say this because the experience that I had with them reflected exactly that. When I first went into the shop for a consultation, I was immediately blown away by the quality of cars they had in the shop. Still in awe of the dismantled Ferrari and pristine Bentley sitting meters away from me, I explained what I was looking to get in my now seemingly insignificant 2008 Volvo XC 90. Charles listened as I told him how I was looking for a new radio and sound system, as well as a backup camera, and how I only had $4000 to spend. He laid out my options and in 20 minutes I was out the door and ready to bring back the car a few weeks later. When I came back I told him how I now had an extra $800 to spend and would like to put it into the front speakers. I was worried about this last minute notice on my part but Jorge very kindly and aptly explained my options for that and 3 days later I came to pick up the car. The unfortunate aspect there was that through some of the wiring the driver airbag wasn’t working. Unflustered by the issue Jorge and Charles STAYED LATE to make sure that my car was fixed so I could leave with it as soon as possible. Now while I did have to wait an extra day, this commitment to craft blew me away and I was more than happy to come back later to pick up my car with a fantastic new system. Then came the bill, and even though the true labor pushed the bill over my predetermined budget, Charles very kindly lowered the hours to make the charge fit what I had available. But the above and beyond service doesn’t stop there. A little while later I noticed I was having two problems, those being that the driver door lock wasn’t always working and the upper driver side speaker was falling off ever so slightly. I drove the car over (without appointment) and Jorge and Charles happily stepped off the project they were working on to take a look at issues. As it turns out neither of the problems was caused by the new system, but they still fixed the driver side speaker (for free) and diagnosed my lock issue and even offered to order the part so I could get it fixed.

This store is proved itself to be extraordinary on so many levels and they deserve all the business they get. Their customer loyalty and trust is proved by the quality of cars they work on and I would recommend anyone to their shop. Thank you so much Charles and Jorge, I will be back!

Charles and his team, Jorge and Mike, are the best! I wanted to upgrade the audio system in my 2007 FJ Cruiser and they delivered. New stereo, speakers, amp, backup cam, steering wheel controls, and a custom enclosure for two 10” woofers...plus a little sound deadening in the doors and it sounds amazing. Most impressive is the attention to detail and perfectionist approach that they apply to the installation. I went back again for some additional sound deadening and the installation of a new roof rack and off-road lights which then led to upgrading the alternator to power it all. These last few items are not what they typically do, but Charles and the guys went above and beyond to ensure that my vehicle was set up exactly the way that I wanted. They spent a ton of extra time chasing down parts and making it perfect. As a bonus, it’s been fun to see my FJ parked alongside many higher end cars and getting the same level of attention and care. I wouldn’t go anywhere else for car audio.

The backup camera and new Alpine radio installation was very professional. Jorge and Charles were courteous, and extremely knowledgeable. The install was completed before the promised time, I was pleasantly surprised! Jorge (the technician) walked me through the entire install process and gave me a detailed overview on the radio and camera features/functions. I definitely recommend System Unlimited, they are the best in town!

Charles upholds the highest of standards, even for my 2016 Subaru WRX Limited. I first spoke to Jorge about my install and what exactly I wanted done. These gentlemen make it happen, even when others can’t. Every little detail, every little thing you can think of is paid close attention to. And then when you can’t think of it, they do, and do it well. My hat really goes off to Jorge. He is so incredibly meticulous. Systems Unlimited is not for the budget people. You pay top dollar for unprecedented work.

Thank you Systems Unlimited for installing an amazing sound system and outperforming those that had previously worked on my car. You made the trip from Portland to Bellevue well worth the time & effort of doing so. For those that are looking to have a system installed but aren't exactly sure which way to turn, I would encourage you to take a few minutes to read my lengthy review that I had posted on Yelp. I'm not known to post reviews of any kind and unfortunately because of this, Yelp has my initial post buried on their second page under hidden reviews. Again, it would be well worth the time to carefully read over my personal experience, within this industry, and why I had to drive from Portland to Bellevue to see what Systems Unlimited could possibly do. They did not disappoint. The owner, Charles Maddy, did not try to upsell me on product that I did not need. This spoke of his integrity. His direct approach and transparency was greatly appreciated and this, in of itself, spoke of the confidence that he had. His team simply delivered all that I had hoped for and did what THREE HIGH END AUDIO STORES, in my neck of the woods, failed miserably in doing themselves.

Again, I would implore anyone to please take the time and effort to locate my Yelp review and carefully read over what I have been through and the amazing job that Systems Unlimited did for me.

Charles and his team has worked on my 2 Ferraris, my wife's Audi Q7 and now my Panamera Turbo. The quality of work is absolutely brilliant. The sound system sounds amazing. I cannot describe it or do it justice in a post. I did not know car audio can sound this good. The sound deadening exceeded my expectations as well. I cannot believe how quiet the car is. These guys are by far the best in the greater Seattle area.

Systems Unlimited in Bellevue, I can’t say enough good things about this shop. Took my car in after another shop installed equipment that did not sound good and would not stand behind their work. They corrected all the problems and put in the right equipment for my car at a fair price. They kept in touch with me through every step of the installation process, their attention to detail is unmatched. My car stereo system has never sounded this good. They are worth every penny and then some. They have my business for life.

Systems Unlimited is a very solid establishment.
I don't have a big stereo budget, With all of the amazing installs they do on Ferrari's and Lambos and what-not, my MB wagon and Land Cruiser were small projects, but they still treated me with respect and do as nice of a job as they would for their exotic car customers.
They do an amazing job! Their installers are pros with years of training and experience.
Not like the young 20-somthings that pretend to know what they are doing over at Car Toys.
If you want ultra-high quality work, and a fair deal, see these guys.
So happy.

This review is about Systems Unlimited located in Bellevue, WA. Charles owns the shop and Mike is one of the guy who works for Charles.

In my quest to sound deaden my car (a Shelby GT500), I consulted several local shops in and around Seattle/Bellevue/Lynnwood area. I did my own research to find out what it takes to quiet the car down. There are many brands of products available on the market and there are a lot of forums discussing this topic too. All the products claim they are the best and every car owner on the forum claims they did the job while some others complained it didnt work. After going through a lot of forums, I finally concluded that its not the material that matters (since most of them are alike with minor differences) but what matters is the way the work is done.

My car is extremely noisy. I dont think any car can come close to the noise that this car generates. After talking to Charles, I felt I was in good hands. He explained the process in detail, showed me the material that he would use, and showed me previous work that they have done on other great cars. However, this was their first time working on a Shelby GT500. I did feel that Charles was skeptical too. However, his confidence and attention to detail made me choose him to work on my car.

They took the car, dismantled it completely (literally everything off), did the work on it (every single piece was layered on extremely carefully so as not to miss any area) and handed over the car 48 hrs later. I was originally told they would need the car for 3 full days. However, they completed it in 2 days because Charles had more people work on it. Mike took several photographs of the entire process while they were working on my car and gave me all the pictures (high resolution) towards the end. Looking at the pictures I was amazed at how nicely they did the work.

Now, coming to the noise reduction part. It was night and day. Now the Shelby feels more like a luxury car. It actually is quieter than my brand new Nissan Maxima and a Nissan Armada and my friend's Audi. I am blown away. And all this with the stock tires (GoodYear Eagle F1) which are supposed to be extremely noisy. I can only imagine what the car would feel like once I change the tires. I am extremely impressed with the work that Charles and Mike did. I cannot thank them enough. What they have done is short of amazing.

I had one of my previous cars sound-deadened through Car Toys a few years back. The quality was no where near what I got from Systems Unlimited. Agreed, Charles was a little on the higher side with respect to price but the quality of work is also top notch. They have earned a customer for life. I would definitely go to them for all my future cars without a bit of hesitation. I can only imagine what they can do with a normal car (not as noisy as a Shelby!).

Let me know if you have any questions about their work or their commitment. I can personally vouch for the quality of work they did.