In 2024, we trusted Granko Inc. to fix our unstable Comcast wifi issues and bring their…read more"professional expertise" to our network. This is a sad story of the betrayal of that trust, their underhanded ways and the hero who ultimately saved the day! With their matching Tshirts and cringey bravado, Granko descended upon our property promising a new era in internet stability; "you'll never have to call Comcast again... just us!" Oh boy... you know the type. We hoped they'd do right by us so we whipped off a positive review when they finished. PRO TIP: Never, for any reason, write a good review in the first 24-48 hours. Within a few days, the system reverted to its old tricks--dropping Sonos amps, latency issues and random WiFi shut downs. But worse...where we once had WiFi throughout our property, we now had nothing outside our homes. What? We had just paid for extenders to boost the signal and exorbitant labor fees only to make things dramatically worse. What then ensued were a flurry of emails from July - Dec, more equipment and labor charges. Granko claimed the wiring was compromised, sonos amps weren't hardwired, Sonos did software updates, faulty splitters, etc... all those fixes were implemented but surprise, surprise! Everything was exponentially worse. In 2025, medical issues sidelined us and frankly, we didn't want to deal with Granko. It was annoying, they never re-examined network wide solutions and consistently threw more equipment at any issue. Sensing a pattern here, folks? In July, 2026, we foolishly decided to call them as issues still plagued the system.Their answer? More equipment and labor. And, once again, no change. At this time, quite randomly, we found out that we were missing some equipment. We then went through the digital site map with Granko. In 2024, we had paid for 4 ULTRA 60W network switches but they were nowhere on the map. Just last month, we had paid for 2 U7s, only one appeared on the map. Granko admitted they swapped out 3 of the ULTRA 60W for a cheaper product but never told us. And they had no idea where the 4th switch was. They blamed the missing U7 on the old "miscommunication between techs". I picked up the owed U7. Granko's wife gave me a taped up box which had been previously opened with the accessory packaging opened. Classy! Thankfully we had been interviewing technicians and Diego Cid of Sonoma Tech Solutions came for a consultation! Within 40 minutes, he assessed the situation. Diego spent 2 days in 90 degree heat, modernizing and optimizing our network. He reinstalled routers and switches, corrected the network topology establishing a single gateway and end-to-end network, put Sonos under the same network and adjusted for multiroom operation. He also found that Granko never installed the U7s and other boosters properly... they had them too low, their reach was totally neutered by obstructions! Diego also cleaned up all the wiring in our boxes. See pic below. The caption function isn't working... the messy cabinet is what Granko left us. The beautiful, neat and accessible cabinet is Diego's) Within moments, after he finished, our system started performing beautifully. We had WiFi around the property, the internet speed was faster and our Sonos amps were working beautifully. It's been a few weeks now without an issue... since our problems were daily, the change was obvious!!! So this begs these questions... --Does Granko install for obsolescence? Do they intentionally build a system that will routinely fail so they can add more equipment/labor, creating an endless money stream? Did they see us, 70+ senior women, as marks? --Does Granko know what they're doing? Pretty incompetent not to know how to install U7s and boosters. Worse, Sonoma Tech Solutions took minutes to understand the network topography was completely unworkable. Intentional (see point above) or perhaps they have no idea what they are doing?? Regardless of who you hire, do a full review of what they promised and all the prepaid equipment to accomplish that. If you are interested in getting the work done professionally and right the first time, contact Diego Cid at Sonoma Tech Solutions (707) 237-4894.

If we could give them a negative 100 we would. This company…read morewas hired to do a Control4 upgrade of my system and was given a list of tasks to perform. Their quote was higher than other dealers but the assurances they gave to fix everything got us to select them. They came in and replaced a lot of hardware saying it was needed to make the system better. Granko did the hardware work and one task out of 12 and then refused to finish the job but wanted to be paid a $5,000 balance on a $13,000 quote. Then they insisted on getting another $15,000 to finish the work they promised would be done in the first job and even more money for other work. We refused to pay the bill until the work was completed as agreed and the owner's wife threatened collections and court. Then when we refused to pay because they would not make it right, our entire system crashed and was not operatable for 5 days. Turns out they installed software to allow them to get into the system remotely which they did not have permission to install and they concealed it from me and did not provide the passwords to the system. We know that Granko turned off our system remotely because they said " Gee we can fix your system easily, just pay the bill for the work you say we didn't do!" We had to pay a network company to come in and reset the wifi system and remove the secret access that Granko installed. DON'T USE THIS COMPANY THEY ARE MISREPRESENTING CAPABILITY, AND DON'T KEEP THEIR WORD. THEY REFUSED TO COMPROMISE AND THEY OVERESTIMATED THEIR WORTH. THEY GIVE US A BIG STORY AND DIDN'T LIVE UP TO 10% OF WHAT THEY PROMISED. WE ARE SUING THIS COMPANY TO RECOVER OUR LOSSES AND HAVE OUR SYSTEM RESTORED BY ANOTHER COMPANY AT GRANKO'S EXPENSE. This company is a ripoff and can't be trusted. They tell you one thing and do something else. Our system is slower and crashes now than when they started working on the system. The problems increased instead of being solved.

There are times, and this is one of them, that an extremely positive experience deserves…read morerecognition. Prompt, professional, and extremely courteous service from our service tech George Potter merits praise on all counts. Solid service all the way around, fair price too! arthur david

I emailed them asking about my A/V situation. Eric came out the same day. He was able to unravel…read moreour strange set up and get it all working within 3 hours. Now the remotes work and all systems are back on line. I can not say enough about how pleased I am with the service I received.

I have purchased numerous audio products from AVI since 2022…read more Tony, Dave and his team have always provided me with great customer service and personal care. When things go wrong (which is rare), they quickly respond to phone calls or emails. They have advocated on my behalf to save me thousands of dollars. If you're considering high end audio equipment, and you want to ensure you will received personalized care suited to your system and budget, run to AVI in Marin.

I contacted Audio Video Integration looking to demo a compact, single-box streaming speaker system…read more(specifically inquiring about options like the Naim Mu-so 2 and McIntosh RS250) for a small space with strict size constraints. Sales rep Dave Costa was dismissive, patronizing, and completely misunderstood basic product specifications from the start. He repeatedly insisted that self-contained wireless speaker systems require external speakers, conflated them with separate streaming amplifiers, and aggressively attempted to upsell expensive component stacks while completely ignoring my explicit space requirements. When I clarified what I was looking for, he doubled down with unsolicited lectures about my budget, patronizing comments about how I conduct audio comparisons, and backhanded insults toward reputable brands. As an audio professional, I expect a specialty dealer to listen to customer requirements and understand the gear they sell. Assuming a specific form-factor request equates to a lack of budget, and talking down to customers because of it, is terrible business. I will gladly take my business to another high-end audio dealer that values customer service and knows their inventory.

Mike and his team are the best at what they do. We had a drop down outside TV that had to be…read moreinstalled. They installed the mount and the TV and made sure everything was in working order. Shortly after the install the TV dropped down, something broke on mount. Mike and his team came back out, took it down, shipped it to the company so they could fix it (it was a manufacturing defect) and reinstalled it when it arrived fixed. They were professional, quick to respond to any and all questions we have, and they are friendly! We have been enjoying our outside TV in our pavilion. They are our first call for any internet upgrades, sound, TV -- all of it!

I did a complete remodel on my house and decided to have a basic entertainment system put in. I…read morehad four televisions put in, and the main TV in the living room had a Sonos sound bar, a subwoofer and two speakers in the back wall. It sounds awesome! I also wanted to be able to stream music, podcasts and other content from my phone to any room where I had ceiling speakers installed, to a combination of speakers or all of them at once. This would allow me to start listening to a podcast in the shower and continue listening to it over the Sonos speakers as I made my way thought the house. Throughout the entire project Sonos was very professional and they went above and beyond during every phase. During the final installation (which took almost three days) they answered every question I had, made multiple height adjustments to the living room TV and explained the Sonos app and how to broadcast to all the Sonos speakers in the house. They also explained and demonstrated the Alexa dot device and showed my how to configure my music app for Alexa. My remodel was probably a small to medium size project for Sync Systems (I'm sure there are mansions in Sonoma and Napa that have in-home movie theatres for 20 people!) but they treated it like one of their biggest and most complex jobs. Every detail was perfect. The office team was great too, with efficient billing as the project progressed and easy online payment through QuickBooks. Would highly recommend Mike and his team at Sync Systems.

A very educated and experienced tech guy named Bayron. Was great about helping my issue for a…read moreclient when I wasn't able to get tot he property.

Hiring vendors for a wedding can be stressful, and Bayron was the obvious choice after speaking…read morewith several DJs. It's clear that Tech4U is a professional team and wants to provide their customers with an outstanding experience. Bayron was able to meet us at the venue several times leading up to the big day, including some last minute changes to include a massive disco ball. It was not easy to rig a giant disco ball outside, but he got it done. Bayron also worked with us to fit our budget and went through several iterations of proposals. Bayron also has high-end equipment and his speakers packed all the punch needed to fill the floor and feel the heat. All in all, a class act and professional experience. Thank you Bayron!

Good company to work with. They were professional, responsive, flexible and did what they said they…read morewould do! Would use again and recommend. Thanks!

Bill Wood worked with us to design a security system that perfectly met our needs. He has also…read moreworked with many of my real estate clients with outstanding comments from them. The installation was very good and they are even returning to add a couple of items we decided we need. Thank you, team!

I had a battery replaced in a motion detector, they charged me $80.00…read morefor $5.00 battery, and a $100.00 for a service call. All in 10 minutes, I don't mind the service call, but the battery fee was a bit excessive. Plan to do my own trouble shooting from now on.

Antoinette McAnallan was most helpful with respect to alarm notifications, contact list and how…read moreprocess works. And, she was most patience and understanding relative to my queries. Bravo, Antoinette.

If I could give Manny 10 stars I would, he was so responsive, did a fantastic job. Called him on…read moreFriday, he came here today (Monday) with the TV and everything he needed to hook up our system. Manny has decades in the industry, and it shows. He is also affordable, very fair cost for the work he did (hooking everything up, taking away the old tv, purchasing and bringing the new tv and all the needed extras) His helper, Willie, was amazing as well. Everything works, and he spent time with us to make sure we understood how to make everything work together. He got our older Bose system to work (amazing sound) and picked a great tv for us as well. Trust me, if you need AV work this is who you want to use.

Another amazing and clean job! I would hire Manny and Carlos again for future installations. This…read moreis now my second AV installation and like the first, more than happy with the quality of work and setup in preparation, as shown in the photos.