This shop is AMAZING!! Two brothers run this shop and have always come thru for me. Called them for…read more2 different cars. 1- Honda needed new tinting in back window. They helped me step by step thru the process. Got me in touch with the window guy in their same complex and tinted and installed it pretty fast. 2- my new complete audio and alarm system i had installed a year ago in Sac thru a different shop that closed, had a viper alarm issue that prevented my car from starting. Jay, got in the and resolved the issue immediately. Discovered the harness was being pulled on and became loose by the way the original shop installers put everything back in under the dash. I love my car and will no longer head out of town for any further car custom needs. It's all about Cartronix. Thanks Guys!!

Jay and Rylan at Cartronix Autosound did a phenomenal job installing a new stereo and backup camera…read morein my 2001 Ford Ranger. The finished installation is incredibly clean and looks like it came from the factory--no exposed wires, awkward gaps, or anything that appears out of place. Even the camera's black frame looks fantastic against my truck's fresh paint. It blends in beautifully and looks like it has always belonged there. They were professional, knowledgeable, and clearly took pride in doing the job right. They also spent plenty of time showing me how everything worked and setting up the stereo so it was fully connected to my phone through Bluetooth. I never felt rushed, and they made sure I was comfortable using all the new features before I left. These brothers definitely know their stuff, and the quality of their work speaks for itself. They treated my older truck with care and made a major upgrade feel completely natural and factory-finished. It's refreshing to find people who combine technical expertise with friendly, patient customer service. I'll absolutely be returning to Cartronix Autosound for more upgrades, including power door locks, remote start, power windows, window tinting, and anything else I can add to spruce up my old Ranger. If you're looking for high-quality automotive electronics installation from people who are skilled, professional, and genuinely care about their customers, I highly recommend Jay, Rylan, and Cartronix Autosound!

Great customer service and quality product. Would visit again. Had subwoofer installed in truck.read more

Sadly it seems customer service has slipped. I had work done here 8-9 years ago and was very happy…read more I was looking forward to another good experience. A word of advice to Mid Valley Sound, when a customer walks in the door asking "hows it going" then leaning on the counter and staring is not good customer service. How about "what can I help you with today" or "do you have any questions?". If I knew what I was doing I would be ordering parts online for cheaper and installing them myself not walking through your doors with a confused look on my face. After a few minutes of standing around waiting to be helped I left. Good service means I shouldn't have to come to you to and ask questions. I know there are two sides to every story. Maybe the guy was new or thought I didn't need help, etc. But I am very disappointed, I hope this was a one time situation. Chances are good I wont be back to find out.

I was referred to Grant through a friend as I was looking to buy a truck on private party. He was…read moreresponsive, flexible with scheduling and arrived on time. His knowledge was vast and inspection very thorough. He saved me buying a truck that could have been a lot of headaches. Highly recommend!

Excellent service. I needed a pre-inspection before buying a van. I got a quote very quickly and…read moreGrant came out to look at van within a few hours. He sent me photos and explained what he saw and what it would cost for repairs. Price was very reasonable for thorough inspection. I would definitely use them again and absolutely recommend them. Very professional

Very friendly. Solved the electrical issue i was having with my break lights. Did not gouge me for…read morehis time spent. I will go back should the need arise Again

Fantastic Great communication…read more Skill and value Go there now you won't be disappointed

Brought my 2025 Silverado 2500HD in for scrapped front bumper, gouged front panel and gouged…read moreheadlight. The headlight alone was $2000 from Chevy new. Paint matched perfectly on bumper and panel, and buffed out headlight, and looks brand new. Brought in on a Wednesday morning and was done by 10am Friday. Im super finicky about my cars and motorcycles and would absolutely recommend these guys!

I was rear ended in my 2012 Mazda, because of their reasonably pricing my car was not totaled, they…read morekept my up to date with my repairs every day, and the workmanship was outstanding. This is a family owned business, Sean and his crew are friendly, and dependable. Thank you Sean I will recommend you to anyone.

We were in our way to Burning Man and had a belt go in our rental RV. We called Joe and he was to…read moreus in 2 hours - then had to go back for more parts. He was so accommodating. We thought we wouldnt get the RV fixed, but he worked on it until he fixed it. Then as we were leaving, he noticed that a headlight was out and fixed that too. We highly recommend Joe. We are so grateful for his services!!

Joe really know a what he is doing, after having two other "mechanics" came to fix my car and…read morefailed. Joe diagnosed and fix the problem in a couple hours.

Had annual chassis and house service on our Newmar. Tony the service manager was great to work with…read moreand handled everything efficiently and kept me updated on work progress for the 2-1/2 days I was there. Tim our Service Technician, was awesome and took the time to explain what issues he found and generally how it all went. I would use De Martini again, no problem.

I recently purchased a new Dynamax RV from DeMartini RV in Grass Valley, CA. The buying…read moreexperience from ordering the RV to the delivery and after delivery experience has been amazing. My rep Nate Davey has been a great resource and very responsive on handling things that have come up after the purchase. Nate is a really nice guy and really cares about making sure the customer is happy and satisfied. The service department run by Tony has been great to work with as well. Tony has been responsive, follows up and is great at communicating the process and next steps. Can't say enough about the business and the team that Tim DeMartini has there in Grass Valley. Kudos to the Dynamax team of Brain Clemens the GM of Dynamax RV and Forrest River as well. Brian is has been great and is one of the reason that we picked the Dynamax brand for our first RV.

I want to Thank Tim and Chris for Smogging my van. Very nice gentleman understood I was in a…read morewheelchair and didn't make me get out. Took me in right away. Wonderful family owned service.

Wow! I was a frantic Mom driving my daughter to school and my car starts failing. I called and Tim…read moreimmediately let me bring my car in. Within 24hrs I had my car back and running! Best experience ever.