I live in Marin and have used lots of shops over the years. Some good some not so much. My last car I thought I would try a shop in Santa Rosa that I had heard about. It was actually Kustom Car Audio and I had them install a system and alarm. It was the worst experience ever. The system sounded horrible and the alarm never worked right. I drove by Cartunes on Santa Rosa Ave. I decided to see if they could help with my dilemma. They looked at it and found the wiring problem with the alarm and retuned the system. It was great and they only charged me for an hour. They found and fixed in one hour what Kustom Car could not in 4 days.

I will be bringing my future cars to Cartunes. I have found my new favorite shop.

Buyer BEWARE, they tried to pull a fast one with us, and I’m sure if the situation warrants, they will try the same with you.
Here’s what happened.
I purchased a CD/bluethtooth unit for my Honda CRV from Cartunes. I also purchased four speakers to insure really good sound. I spent about $600 all tolled.
The CD sounded fine, but no one could understand a word I said when I used the unit to make phone calls in the car. When I brought it back, Cartunes claimed it was the car, noting that Honda CRVs have ridiculously loud interior noise. I asked why they sold me the unit if it won’t work in this car. They instantly changed their tune, and said my phone was the problem. They then brought the CRV back into their shop where they claimed to pair all of their phones with the unit and of course, according to them, they all worked perfectly. My brother asked them to try pairing his phone, and proceeded to watch. They fiddled with the phone for a few minutes, but couldn't make it work.
They finally replaced the unit, which showed only a slight improvement. I think the problem has more to do with the installation and I’m going to take it elsewhere. My family has given this shop so much business over the years, it’s a shame the owners employ people with no regard for customer service. My family will never go back there again, they’ve lost their credibility with us!!!

my subwoofers would not work so they rewired my whole deck, remounted, and they still did not work. i asked the technician who worked on my vehicle if everything worked. he bluntly replied "whats everything" and continued his disrespectful walk away. i was then walked inside where i was given my 135 bill and they acted like it was a faulty deck and said i needed to contact the vendor. in my best interest they took off 15 dollars for the unfixed problem. thanks guys. i then went to best buy, asked a technician what the problem is and in under 5 minutes my subwoofers were adjusted and working perfect at no charge! no wonder why small companies insist on going under and blaming it on corporate problems.