I reached out to Mark after seeing a positive review on a different site and a number of positive reviews on Yelp. Scheduling a time to meet for an estimate was a breeze and he showed up on time. His estimate for replacing an existing camera system was competitive and he was honest about his recommendations; I definitely did not feel there was any upselling. The install wasn't a breeze as Time Warner's modem and service created some issues. However, Mark spent a good part of the day troubleshooting the issues and ensured the install was complete and working before taking off. Mark also made himself available when I contacted him about a technical glitch and took the time to clarify some of the features of the camera system. He's responsible, responsive, trustworthy and I would definitely recommend. read more

Awesome job. Was on time and communicated effectively. Brought in everything he needed and mounted my tv in less than 30 mins. A1 customer service by Mark. Will be back when I'm ready to mount that next tv. Thanks for making it painless and simple. read more

After coming by my house to check out an already-installed security installation, Mark offered his evaluations and advice free of charge since he'd said there would be no obligation. The information he discussed with me was concise and very professional. He offers many more services, so I look forward to utilizing him for future installations! read more

5 Stars isn't quite enough to rate Mark! His customer service is too notch and he knows what he's doing. We are super happy with the camera system he set up and he's a very nice person to top it all off! read more

I needed some camera's and AV installed, I called Alonso Audio Solutions and they were the company for me. Mark and his team of AV installers did everything I could have asked for. They did a preplan and schematic of how I wanted it wired. I appreciate how professional and courteous all of Alonso Audio Solutions staff was. I would recommend them for any AV solutions you might need. read more

Awesome! Got my job done in 3 days, installed everything on our phones and computers. Worked with my son on fowarding "ports" which gave him something to do. Awesome quality and calls when he is going to be late (which happened once, but he called in advance). read more

I cannot say enough good things about Mark and Alonso Audio Solutions. He and his assistant Juan are wonderful. Mark has helped with mounting our TVs, Ring doorbell system, as well as several other technical issues, including installation of a new ceiling fan/light. He works at a problem til he figures it out. I had a door bell what wasn't working with my Ring system, and he finally figured it all out. He has been to my home several times and is always prompt and extremely clean, neat and tidy while he and his assistant work, leaving our home just as he found it. Mark is patient and such a nice guy...always ready with answers to my crazy questions, and is happy to repeat when I don't remember what he said about all things tech. He gave me ideas about what to buy, would tell me where to get the best price, and along with that, he has never tried to upsell me on anything I don't need. He is absolutely the best!!! read more

Mark and his team did a fantastic job with our sound system installation (both indoor and outdoor speakers connected via Sonos). They are absolute professionals and it is reflected in the quality of their work. Customer service is also top-notch - Mark is fair, patient, honest and responsive. If you need any sound/audio related work completed - look no further! read more

Mark was excellent! He came in only expecting to mount one tv and we actually had him do two! He hid the wires in the wall and it looks great! 5 stars! Very friendly , gets the job done quick and right! read more

The service was by far the best!! Very knowledgeable and thorough. Reasonably prices. I would highly recommend to all!! Thank you so much Mark!! read more

He is definitely the best person for this job. Mark has been reachable even on the weekend to help us. When he guarantees good work he really means it. This person knows what he is doing and has answers to all our concerns , we were lucky to pick him out of all audio guys online. Thank you for the service. read more

Came out to residence and tried to make existing installation work (aka my DIY antenna) and then later came with a pole and a better antenna still no luck only charged for the first service call $25. Now know for sure that I'm in a poor signal reception area from Mt. Wilson (hilly sections of Sylmar). Asked if he wanted to reschedule since the weather wasn't too good, but still tried. Gotta give em credit for that. When TV stations start doing something like the radio stations and simulcasting (other transmitters in other locations other than Mt. Wilson) to get the bad signal areas then I'd have them come out and do an installation. read more

Professional, on time and very knowledgable. Marc and his crew know what they're doing. I had 8 cameras installed around the perimeter of my home and inside. The install went very smooth and everything looks super clean and very professional. I also had clocks and a projector wired through my walls and a set of wall clocks. All of the components are perfectly balanced and well mounted and the electrical outlets look super professional as if they were put in when the home was built. Alonso Audio Solutions is also priced very well and will be hiring them for all of my audio and electrical work. read more

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Hired Mark to set up surround system and program remotes and I can't rave enough about how quickly he set everything up and made it user friendly. Call Mark he's very affordable and knows his stuff! read more

Mark installed a sound system for my backyard (4 speakers, a sub-woofer and a receiver). When Mark showed up to review and quote me for the job, he fully explained all of my options with respect to electronics choices, sound quality, speaker placement and bang for my buck. His price to do the whole job, was at least 15% lower than the others who quoted the job and was a really nice and professional guy as well. On installation day, he arrived with a helper and they did an excellent job burying wires, installing and setting up my system. A few days later I decided to move one of the speakers and he quickly came out and did the job. I am more than satisfied with Mark's work and I have a few other upcoming projects that I will definitely use him for. I recommend him highly -- especially if you need help figuring out which equipment to buy! read more

Great work! Prompt, clean and reasonable rates!! I highly recommend their services.

Second time using Mark. Always seems to be able to solve my technical issues. i would recommend him highly and not hesitate to call him in the future. read more

Mark and Chay are simply the best. They worked nonstop until everything was perfect and we were completely satisfied!

We hired Alonso to fix a problem with our hd antenna on the roof. He found the problem easily and was very courteous and knowledgeable. We would definitely call him again and recommend him highly to everyone. read more

I can't recommend Mark Alonso enough! He worked on my home automation system and security cameras and entire system including my ring doorbell. He is professional, and reliable. We also had a issue with our RTI system which he brought in a specialist to solve that problem. Five stars! read more

We hired Mark to set up new security cameras outside our home. He gave us multiple options along with advice on what would work best for our needs. We ended up choosing Ring Stick Up Cam Wired and Mark gave us a fair price for installation, ordered the cameras for us and had them up quickly. He was a true pleasure to work with! read more

I contacted Mark a few days ago regarding home theater set-up and installation. He responded immediately and answered all of my questions clearly and concisely. He set an appointment for 24 hours later and showed up early and well prepared. He advised me of his plans for installation along with some of the possible drawbacks. He performed masterful work in a relatively short period of time. I am 110% satisfied. He and his helpers far exceeded my greatest expectations on a professional basis. His fee was extremely fair. I am now preparing to call him back for security camera installation. This guy rocks !!! read more

This is the second time I needed Mark's professional service. The first time I needed a T.V. hung on a fireplace and the wires to go through the attic to connect my service. This time we needed Mark to provide cable access to different rooms downstairs without having any exposed wires inside or along the outside walls. He worked really hard going from the attic to the first floor making only small cutouts in the drywall. Before he left he had patched all the cutouts and left the house nice and clean. His price is reasonable and he is a very honest and hardworking professional. read more

Mark is a wonderful guy and a professional! He is dedicated to his work, and will not leave you until he find a solution to the problem. He installed a home theater in our house, and then connected a global remote control. He did a very good job. We will continue working with him, and highly recommend him. read more

Great service and very helpful. I time and very courteous. Would recommend to anyone who is looking for a super tech to set up your stero.

Mark did a great job on some cable runs for me, he was very quick to come out for an estimate, had availability to complete the work quickly and was very professional on-site. I'm happy with the work performed. read more

My tv system was in shambles. Nothing was working right and I was very frustrated. It's a pretty complicated system with cable, dvd, security cameras, apple tv and even a foreign channel box and Mark straightened everything out. It's all smooth sailing now. Can't believe I've been suffering from so long not being able to use my equipment right because of the software problems, glitches, etc. Now, I'm gearing up to have Mark put in a new camera system. I know it will be done right and for a very reasonable price. What else could you ask for? 5 stars service, people! read more