I brought my 1993 Lexus SC400 in for a head unit replacement, and I brought in a head unit, mounting kit, and harness that I'd ordered online. Since my car had the Nakamichi system in it, my research indicated that integrating a new head unit may require some soldering in addition to the harness I bought, in order to keep the amp and sub. When I emailed Andy, he was highly knowledgeable and fully aware of what might need to be done with my system, he could explain to me clearly how he might do it, and he was willing to do the soldering if necessary.
It turned out that no soldering was needed, but another part was required to fully integrate the new head unit with my 6 speakers + amp + sub. Andy charged very little for the part and had it in stock. The job was done in a few hours and everything was perfect. My system works perfectly and looks beautiful.
I did not have any up-sell or additional services/items pushed on me. Andy explained that my front door speakers were blown and the rest sounded ok, which is true. He said the speakers would need replacement but wasn't pushy about it at all.
I highly recommend SS Audio to anyone for anything they do. I am confident they are reputable people who will treat customers with respect and professionalism.