Jimmy is amazing! He is a master of electronics repair and knows how to fix the old high end systems as well. I cant say enough good things about Jimmy! He is a true master of his trade and a super honest and nice guy!

First, let me say Jimmy is kind, professional, and organized. Next, his shop is clean and neat. Contrary to some other poor comments, we had no trouble finding the location and signs are indeed posted as you drive in that leads you to the building. When you call the answering machine even tells you how to get there with the address and invites you to stop in. Again contrary to other comments, he did return our call in a business timeframe. We are so grateful for all the help and expertise Jimmy offered. Would highly recommend for any of your audio needs he surely knows what he’s doing.

Jimmy is the best. Hes the only guy I would trust with my vintage Marantz 2270. Hes honest, conscientious, and does great work at very reasonable prices.

Not only is the work top quality, but the attention to customer needs and overall approach to care is spot-on. Jimmy knows gear, and is ready to assess on the spot (schedule permitting, but thats been my experience). Hell listen carefully to your report of what you think is going on, plug the component in right there, and offer a very fair guess of what might be going on. This is no frills, no BS interest in actually restoring your gear to prime working condition! Ive had pieces repaired---with fair warning that parts might be expensive (they werent)--and Ive also had the opposite experience: being sent away with a working piece of equipment that I had erroneously thought to be broken! No money changed hands in this instance (I offered to pay), and no judgement made on his part. If you dont know whether something is worth fixing, call. If you get an estimate back, and still dont know if its worth fixing, ask. Jimmy is in it to make sure we all have working AV gear, and I completely trust his judgement. Plus, the new space is much more pleasant to get to!

Our Marantz 2250B had some issues. The work was done professionally, competently, and to our complete satisfaction. We were so impressed with the explanation of work done in words that even I (my wife is the audiophile) could understand. So glad we found this place. My wife is so happy to have a unit working again that hadn’t been operational for some time. Wonderful experience!!

Repaired my product while I waited in less than thirty minutes....absolutely amazing...Thank you Jimmy.

My 50+ year old dual 1229 turntable had finally decided that all the years of use had quite literally gummed up the works. while it is far more common today to simply toss out old electronics and to replace them with something new, i am a firm believer that something that was built with quality and durability deserves a chance to continue to provide years of service if you are lucky enough to find a craftsman who has the required skills and takes pride in their work. luckily, jimmy at the electronics service center is just that person and he was able to restore my turntable back to its original showroom performance for a very reasonable price and with the knowledge that he stands behind his work. in this age of throwaway culture, i would encourage anyone who has something that either for sentimental reasons or because you know just how well made your equipment is, to consider letting the electronic service center breathe new life into it before you buy something new that was designed to be replaced rather than repaired. I could not be happier and would recommend this wonderful craftsman to everyone I can.

Jimmy is great and did a stand out repair on my Nakamichi Receiver- price was good-workmanship excellent. A+ - a definite recommend.

Long wait (3 weeks) but delivered my preamp before it was promised. Works perfectly. Cost was very reasonable and explanation of repair made very good sense. As the pre-amp is 18 years old (and a collectors item) I was REALLY pleased!

These guys are good if its just a phone you need fixed. Electronics Service Center is a bit misleading. Brought some kaput headphones over and they wouldnt touch it.

Superb service by Jimmy at Electronics Service Center. Brought in a (now) vintage Bang & Olufsen component system and Jimmy was able to diagnose and propose a reasonable repair solution. Had my baby back quickly and is literally working as if new again. I am hoping to build a system and so will definitely return with additional system components to have Jimmy do a once over as he is passionate, thorough and professional in his work and highly recommended.

Very friendly service and he fixed my issue right on the spot!

Jimmy always does great quality work!

High quality work. Reasonable price and very responsive. I will go to ESC again for my next repair.

I found ESC doing web research for a reputable repair shop within easy driving distance. My 5 yr. old $$$ Cambridge Audio receiver was out of warranty and had died overnight (power surge?). My retailer referred me to the only US authorized repair (in N.J.) which required me to pay shipping (receiver weighs ~20 lbs.) and a substantial up-front diagnostic fee but seemed to push an offer to provide substantial exchange credit towards the purchase of an equivalent current new model (how would I know it was really new and not recently repaired?) as opposed to repairing my equipment. This was NOT what I was looking for. ESCs web site doesnt mention Cambridge audio and although hesitant, I brought the receiver over. Jimmie was cautiously optimistic and said he was familiar with other U.K. audio products. The $50 diagnostic fee would be applied to the repair charge but returned if he was unable to obtain proprietary parts or do the repair for other reasons. He warned that he was backlogged about 1 month (which I appreciated knowing) but I figured it would be that long or longer if I had shipped the item to N.J. at almost certainly greater total cost. Three weeks later, he called and said it was all fixed and ready for pickup. Hooked it up and demonstrated that it was repaired at pickup. Total cost was $175. Work guaranteed for 6 mos. Item looks, handles, and sounds like new. Im totally pleased and highly recommend ESC even if your unit is not mentioned on his web site. Hes very busy and seems to know what he can probably fix or not fix even before accepting a repair job. Id bet he doesnt want to waste either your time or his! A competent, honest expert charging a fair price. A rare combination these days.

Always a great experience with Electronics Service Center! Had two 20-year-old power amps with dead channels and he was able to quickly repair them both. Later, one amp developed issues again with ~2 weeks left on the extended warranty, so he repaired it for free. Even if it wasnt free, his prices are very reasonable! Highly recommended!

Jimmy is great, he has revived 3 items that had been sitting on shelf for years - an Adcom CD changer, a NAD receiver and, the most difficult, an 1990s Rotel power amplifier. This last item took several attempts to track down all the problems and he did not charge me for anything beyond the first service. If you have older audio items you would like to rejuvenate this is the place to go.

Is this even a shop? Theres not even a sign and the phone goes on answering machine

There are only a handful of places like Electronic Service Center that remain in our entire country. Very few people have the knowledge, skill, patience, and dexterity to fix up and tend to older speakers, receivers, turntables, or whatever retro gear you might be hanging on to. If you are hanging onto an old piece of equipment and have even the slightest desire to get it working again, for nostalgia or any other reason, definitely give ESC a call.I took a Dual 1219 Record Player to ESC in Germantown and Jimmy got this working again like new. For those that dont know, this record player is nearly 50 years old. It had been in my parents basement for nearly 30 years and he was able to replace a part (which is no longer manufactured anywhere) and bring the entire deck back to working order. The pricing was fair and I couldnt be happier to have this old deck playing music again.

Excellent experience. Highly recommended. I had my old tape deck (as in 40-45 years old) repaired and now its working like new. Jimmy is very patient and takes time to explain things. He has lots of experience and knowledge about electronic sound equipment. If you have electronic equipment that needs service, this is the place to go.

I had Mr. Diaz rejuvenate my dads vintage KLH Eleven portable stereo turntable that is nearly 60 years old. It had been in my moms basement for 30 years. The power supply circuitry repaired, all connectors and jacks cleaned. Old grease cleaned up and turntable mechanism relubed. All corrosion cleaned. New stylus installed. Works like new and sounds great.

Love this shop, was very polite n experience, will continue to do business with them.

Great work, service and price! The Electronics Service Center recently repaired a CD player for us with a brand name no longer sold in the US market. Jimmy was professional, friendly and knowledgeable. The cost and time to fix it were both very reasonable. We are so happy to have our music player back. Highly recommend this place!

Electronics Service Center is THE place to take all your stereo and home theater equipment for repair because they know what they are doing and always do a great job at very reasonable prices. I have been taking my equipment there for many years and have very happy with the high quality repairs and superior customer service! Manager Jimmy Diaz will take great care of you! He’s the best!!

Had Sansui 881 in for dial light replacement and he also reset some things and it looks and sounds incredible!!! This is what a new one must have sounded like!!! Highly recommend this business!!!❤️❤️❤️❤️❤️

Electronics Service Center got my cars old CD player fixed quickly and efficiently. Many other places recommended I purchase a new device instead of trying to fix the current one or asked for a much higher price. Great and very professional customer service. I would highly recommend this place if you have an audio device in need of fixing. Amazing service and value from Electronics Service Center!

Great customer service. Very accessible. Patient answering all of my questions. Brought in my B&O TX2 turntable and he gave it a quick pass, diagnosed the problem as a bum cartridge and sent me on my way without charging me for the evaluation. Will definitely call on Jimmy again. Thank you!

THIS IS THE BUSINESS TO GO TO FOR REPAIRS!!!My Vintage Yamaha Amplifier that I had for over 30 yrs stopped working. I chose Electronic Service Center base upon the reviews. Spoke with Jimmy, told him the problem I experienced with my amp. He recognized the make and model of my machine, over the phone, base on very few details. I felt at ease speaking with Jimmy, who is very knowledgeable and even educated me on some things that I did not know about my amplifier. I brought my Amp in for servicing and was extremely happy with the results. The turn around time and quality of service was more than efficient. The price was fair and reasonable.The reviews are so true. My amplifier sounds wonderful and is like BRAND NEW again! I am a very HAPPY CAMPER! THANK YOU!!!

I brought my Sansui G-22000 power amp and receiver in with a busted umbilical cord, and he REBUILT that puppy! Great work and a fair price, highly recommend this place.

Excellent service, i have done 4 my audio gears here and extremely satisfied what Jimmy have done with them. In addition, Jimmy is very friendly, and knowledgeable i enjoy talking with him and learn a lot even he is very busy with tons of waiting customer. Since he has a lot of customers, i am happy to wait for couple weeks to get my audio repaired. Quality is better than rush. Highly recommend.

I recently moved from Colorado to the area, and when I tried to hook up my Pioneer receiver in my new place, I couldn’t get any sound to come out of the speakers. Tech specialists came out to my home to attempt to fix the issue, and I spend hours on YouTube trying to figure the problem out myself. Finally, someone suggested I bring it in to Electronic Service Center. Jimmy was able to find the issue, fix it, and gave me a tutorial on how to easily hook it up myself! So thankful for his knowledge and expertise!

This is a great service. My late father left me a turnbale that I need repaired. ESC refurbished it and now it work as new. I also brought them an velodyne subwoofer that need repair. Both units are working as new.

If you need help with your audio equipment this is the place to go. I have a turntable from the 70s that I love and it definitely needed work. I shipped it off to Jimmy and he took care of everything ... no problem. And at a fair price I must say.

Jimmy did a wonderful job with my 1968 Magnavox Console. It sounds 100% better and he came in under the estimated cost. He is well worth the money for your audio needs.

Jimmy has repaired a number of vintage audio components for me over the past 6 months. His work is excellent. It is extremely rare these days to find an experienced knowledgeable expert who will take the time to explain exactly what needs to be done to resurrect an old receiver or turntable. I will continue to use his services in the future. For now, I am loving listening to quality music again. My highest recommendation.

Jimmy is a rare breed indeed. Great guy to work with. Knowledgeable technician, fair businessman. He completely restored my 40 yr old Marantz amplifier. The results exceed my every expectation.I then brought him a more modern, high tech piece of equipment, previously written off by two different techs. He repaired it spot on. Again, exceeded my expectations. I will qualify that I am not easy to please, and that I expect to get what I pay for.Overall, just a pleasure to do business with this shop, led by Jimmy. I would drive 2-3 hours any day of the week to bring my audio equipment here to be serviced or repaired. There arent enough stars to post.

I stopped in on May 5, 2018, to get help fixing a TV power board. They were polite, nice, professional, and experienced. They were able to help me get it fixed in no time. The service was fast and great and exceeded my expectations. I highly recommend them, they are excellent!!

Fabulous experience. Jimmy is patient and knowledgeable. Highly recommend. Wishing much good luck in the new location in Germantown.

The sound from my 3 CD player stopped working. I suspected it was the laser because the mechanism was working fine. The technician at Electronics Service Center said the laser reader is supposed to last 15 years and my player was 25 years old. The laser part had to be ordered from the company (Panasonic) and was expensive. It was the laser that needed replacing and now the old player is working as it always did. Technician seems very knowledgeable about electronics problems and is very professional and courteous. I will go back for any other electronics problems.

I looked for a reputable service shop for my Yamaha stereo in Pa. and liked what I read about Electronic Service Center in the reviews.I drove over 100 miles and dropped it off. They finished the intricate work and I couldn’t be happier! It was worth it. I would recommend them and will be using them in the future!

Excellent repair s

Jimmy did a fantastic job bringing my old receiver back to life and gave me a lot of good advice. He is the go-to guy in this area for stereo repairs and maintenance and is a super nice fellow. Thanks Jimmy!Update August 2019: Jimmy did another great job on my old Marantz receiver. It was a tricky job but he brought it back to life and it sounds wonderful. Thanks again Jimmy!

I brought in my Def Tech ST tower to have an amp replaced. He was very flexible on timing, very polite during phone and in-person interactions, and got my speaker repaired in less time than he estimated. I had it back in 2 days, and at a price that I believe is very fair. Will definitely return for any other AV repairs I might need. Highly recommended.

I brought in an old cd player to be repaired. The proprietor told me it was likely cheaper to buy a used cd player than repair mine but I wanted mine repaired. He worked hard and long in trying to find source of problem but, unfortunately, the needed part for the repair was no longer being produced. I appreciate all his time spent on this, his kindness in explaining to me what was wrong with the machine, and his attempt to bring me into the 21st century world of technology.

Great personal customer service, will definitely use again for Electronic Repair needs

I didnt think a place like this existed anymore. They actually FIX things!They did a great job fixing 2 20-yr old Dahlquist speakers that I had abused in my youth. They are high-end, but older speakers that sound like new now. Reasonable prices. Very professional. I recommend them highly.

I brought my dads old BIC 960 in for repair, as it had stopped running and has sentimental value. When I got it back, it was running slow as the replacement belt they used wasnt quite right. The owner took the turntable back and replaced the offending part at no additional cost. He also proactively replaced some capacitors that were showing their age. Great service, and genuine interest in doing a good job.

I had two CD players repaired there, one brand new, one 30 years old. Both were repaired and demonstrated, using test CDs I provided, before being asked to pay. The new one was repaired at the manufacturers cost. The old one cost $145 to repair, but you cant buy the features that old one has at any price today, so it was worth it. The tech hadnt seen track indexing (said feature) before and spent some time playing around with it, time I was happy to spare. No complaints.

Yet another 5-star review here. Jimmy is a nice person and a true professional with vast experience. He diagnosed the problem with my speaker on the spot, provided a fair estimate, and I had it back the day he told me I would have it back. The speaker works like new now. Were lucky to have ESC here in Maryland.P.S. For what its worth, my speaker is not vintage like some other reviewers equipment.

Jimmy is a great guy and went above and beyond to make me happy. My B&O reel to reel sings again. The price was very fair.

Electronics Service Center certainly knows what they are doing and are great to work with! Jimmy is very knowledgeable and showed great expertise in servicing my vintage Marantz stereo receivers and tape deck, as well as my Carver CD player. I could not be more satisfied! I will always take my equipment there; they are the BEST!

I had a turntable I recently purchased from eBay repaired here. They were very friendly and walked me through everything I needed to know about it and the proper way to transport it. I found they were very professional and did an excellent job repairing the turntable. It was very exciting to hear it working properly and it sounds fantastic! Highly recommended!

Jimmy does great work. My 30+ year old B&O turntable performs like new. You can always tell how good a shop is by how well kept it is. His operation is the best Ive seen.

At a very fair price, Jimmy has serviced several of my vintage Marantz receivers. Youll be hard pressed to find a more knowledgeable, honest , fair priced, mom & pop electronic repair shop anywhere in the Maryland, DC or northern VA area. Jimmy takes the time (and I mean takes the time) to clearly explain what repairs are necessary. This man actually cares! His pricing is so good, it surprises me how he stays in business. I chalk it up to volume and the fact that Jimmy has repair down to a science. Each time I was there, several people arrived to leave their equipment and at least one person picked up their serviced equipment and thanked Jimmy profusely. Jimmy even told one person that he should not repair his receiver but buy a new one and Jimmy doesnt even sell equipment. Bottom line is that Jimmy specializes in high end audio repair and can repair virtually anything audio related and at fair pricing. FYI: A good while back, Just Audio in Parkville said it would cost $275 for a repair. Took it to Jimmy and paid only $150. Now, I wouldnt trust Just Audio to repair a toaster. Seems they prey on the elderly and people who dont have a clue about vintage electronics. Jimmy rocks!

I was attracted to this company because of its excellent reviews. I brought in my 40+ year old Marantz receiver for service. It hadnt been used for years. Now it sounds like it is brand new. The time spent on repair was reasonable as well as the cost ($175). I want to add my excellent review to the many others. In fact I brought my 40+ year old Dual turntable in for repair. It was not dropping the records on the turntable automatically. It plays 33 1/3, 45, and 78 records. Once repaired I can again listen to my favorite music from my large collection of records. The Electronics Service Center is at the top of my list when I need to find a place to resolve my audio problems.

Jimmy is the best! Over the years he had repaired for me everything from my Onkyo home theater amp to a high end cassette player to a vintage bass guitar amplifier. His analysis and workmanship is top notch and his prices fair. I wouldnt go anywhere else.

Great customer service. Very quick turnaround and very fair pricing. I highly recommend.

Brought in a somewhat obscure high-end integrated amp made in England with a quirky electronic problem. Good and fast diagnostic service. Lightning fast and quality repair at a very reasonable price, and sterling customer service/communications. This place is the real deal for audio repair.

Excellent work and at a fair price. Jimmy was a pleasure to work with. He resurrected my dead Bose Companion computer speakers, which Bose wouldn’t touch. I’d return to him for any electronics repair in the future. A great find.

For warranty work . . . many companies make the end user get the item to an authorized service center on their own, and Onkyo is no different. Had to take the day off work and drove over there. Walk in the door and big relief -- the place looks the part in the best way -- plenty of test equipment, orderly workbenches visible to the customers, units under repair, and fresh neutral smell. The proprietor stopped what he was doing, and asked for the receipt (I knew, and had). He said Onkyo would pay for the return, though I was responsible for the box. He said he would sell me one - a great deal as it turns out -- part of the five star rating is how well he packed the unit. The unit was submitted 20180307, and I got it back 20180327 or ten days. There was a warning to be careful not to short anything, and a sweet invoice for $0 due. I connected everything, and went through the room equalization, and then turn on some music and video and all is working. THANK YOU Highly recommend.

Fantastic service. Recommended by B&O and they delivered promptly with a full repair on gear that is very specialized.

Took my B&O stereo components to ESC for evaluation & repair. Highly competent tech who stands behind work. Quickly diagnosed and fixed faulty replacement cartridge. Honest pro who wont pad a work order. Very satisfied. Highly recommend.

This is a great shop. Very professional and knowledgeable. They did a terrific job repairing my Definitive Technology speaker for a decent price.

This place is an extraordinary find. Incredibly knowledgeable -especially with respect to high end systems. They correctly diagnosed and fixed my Bang and Olufsen BeoSound 4000 console when others said it couldnt be fixed.

I had my reel-to-reel tape deck repaired here. It took a week and the cost was more than reasonable. Jimmy is a thorough and good guy. Highly recommend!

Jimmy did a great job with my 1950s Magnavox table radio. He put the radio back in working order with no surprises, no delays, no problems of any kind. He is friendly and knowledgeable and a pleasure to deal with.

I came in with two different mini-stereo systems. I found the customer service on the phone and at the desk to be top-notch. He was honest, kind and knowledgeable. I will definitely return when I need service again.

Jimmy at Electronic Service Center is a technician who is a true professional, who knows what he is doing, and who takes the time to explain clearly what is wrong with a system. He was superb in fixing problems that I had with three different Bose sound systems. I recommend his expertise--and his very reasonable prices--to anyone.

I have a vintage audio receiver and CD player that appeared to have suffered from storage and moving van from Colorado. I am pleased to say that excellent performance for my Yamaha brand items is fully restored. ESC in Rockville provided me with pleasurable performance: Timely, thorough, fair price and courteous/friendly. Their location is worth a journey for your effort if coming from a long distance, as I was in upper Howard county.

His work is great, more surprisingly his prices are VERY reasonable. cant recommend this place enough. if I could give it ten stars I would!

The Center repaired our B&O turntable. The service was excellent, in good time, and the price fair. Can really recommend this place.

I have had three repairs done here on various audio electronics, and every time they did an excellent job. Highly recommended.

Great fast, quality service. Very friendly, tested my Onkyo receiver right in front of me after the repair. Very reasonable pricing. Highly recommended!!!!

This guy is amazing and great. Very friendly and knowledgeable

This is the real deal. If its fixable, these folks will do it for a reasonable price and it is invariably done right the first time. Especially if you have old-school or collectible hi-fi gear (incl. turntables!) this is the place to come.

ESC diagnosed and completely fixed my vintage receiver and speakers, giving the old guys a new life. Jimmy is very friendly and knowledgeable, and kept up great communication through the repairs. ESC is an asset for any vintage audio enthusiast!

Jimmy is the best! He fixed my 40 yr old Technics SL-1500 Stereo in less than a week. His knowledge is immense, his skill is sharp, and his prices are fair.

Good experience. Helpfull with what caused my unit to fail and how to prevent it from happening again.

Had my B&O stereo center in for repair of CD player and general maintenance. ESC is the only company I trust with the 30-year old system. As usual, Jimmy did a great job. It s performing a the level of a new system.

I’ve used Electronic Service Center a couple of times for vintage audio repair. I can’t say enough good things — skilled work at a reasonable rate and great customer service.

I have an ONKYO receiver that was bricked from a failed firmware update. ESC was listed as a certified repair center for the device, so I brought it in. Everything was taken care of in just a week, and now Im listening to some tunes from my system with no problems. Also, the technician there was a very nice person. I think that counts for something.

I feel comfortable buying used HiFi gear knowing such a competent repair shop is just around the corner. The customer service is top notch and the diagnostic skills are repair are second to none.

This is a wonderful place to get your electronics serviced or repaired. Jimmy is a great guy !

This place is the only place a will take any of my vintage audio equipment. Extremely knowledge and excellent service!

Ive sent two Onkyo units to ESC for repair over the years (2014 & 2018). Both times they were brought back from the grave and returned to me like new. Jimmy was a wonderful help on the phone and explained in detail what went wrong. The units (changers) were nicely packaged, the price was very reasonable and the service was speedy. Great outfit! Thanks! John Leydon, Aldie VA

I took my vintage (40+ year-old) Marantz receiver to ESC for a diagnostic evaluation (one channel continually dropped the signal). I was so impressed with Jimmys analysis and the timeframe for having the repairs completed. I also appreciate the time he took when I picked up the equipment to review a few care items specific to my receiver. I will definitely return will any other repair needs!

The owner of this shop is honest and reliable. After thoroughly diagnosing the problem with my stereo receiver, he offered a simple solution rather than an expensive repair.

Mr. Diaz at the Electronics Service Center in Rockville is courteous, informative and helpful. This place is a godsend for those of us who still have lots of vinyl and want their turntables & receivers serviced with true professionalism.

Superb service and tremendous knowledge with very reasonable prices.

I’ve been looking for reliable local support for vintage stereo without success. Then I stumbled upon positive reviews for this small shop (ESC) near the record and bookstore I frequent. I decided to give ESC a try this April to possibly revive a Harman Kardon HK-730 receiver which, after being stored for more than a decade, had lost channel and scary noise, etc., even after my own attempt to clean it. I have to say that Jimmy was easy and straight-forward in our initial and all subsequent communications. My impression of Jimmy remains that he knows what he’s doing and means what he said. The turnaround time and cost for repair are both reason. Jimmy made sure that the receiver works as he claimed and as specs indicate before I took it back. It has been performed flawlessly and sounded better than I remember.During the repair of the HK-730, my HK-930 suddenly lost sound output from both channels. So after contacting Jimmy, I brought in HK-930 in May for his diagnosis and possible repair. To make the long story short, Jimmy fixed the power supply and I am a happy owner/listener again. I am happy to find Jimmy/ECS as a reliable, competent and reasonable local support for my vintage stereo equipment.

From the time he picked up the phone,till the time he fixed our Bose Lifestyle 25,Jimmy was very courteous and knowledgeableWill recommend to everyone!

Jimmy at ESC has been repairing all my hifi audio equipment for 15 years! Over the years he has revived my Denon turntable, repaired a formally dead Carver tube preamp and is now working on a CD player for me by searching the world for a replacement part from 30 years ago. All at a very fair price and with quick turn around. I wouldnt go anywhere else for hi end audio repair and I recommend you dont either. If you go, tell Jimmy I sent you :)

I have been using ESC in Rockville for many years, mainly for repairs of vintage equipment. Jimmy at ESC is honest, no BS. If he cant fix something he will tell you straightaway, but hes always up for a challenge involving old equipment and he clearly has a love and appreciation for well-made sets. He doesnt rip people off for small jobs -- I needed a pin replaced on a small surface mount device, and he did it in seconds. My jobs have involved surplus communications equipment, a bit more of a challenge, but Jimmy is always willing to assess each challenge and provide honest views.This is a small shop located in the Rockville industrial area, you make a left or right from Parklawn, and park in the lot. Small businesses like this working on vintage equipment are hard to find these days, and friendly honest service is also often non-existent.

The Electronic Service Center / Jimmy Diaz repaired my Rotel 1067 on time and on budget. Jimmy accurately diagnosed the issue to replace DSP module and everything is working great. Fair price to fix saved me a couple thousand to replace. Great to find someone who can get the job done. Recommend highly!

My 25 year-old Rotel integrated amp died, and ESC fixed it in less than one week. Really good service and reasonable prices. Thank you, ESC!

Quick efficient service at a decent price. They revived my old Adcom pre-amp and its cranking again.

Oddly, this shop apparently wasnt widely known among the local audiophile groups but I became aware of them when a friend from another city asked for help retrieving a Bang and Olufsen turntable. Apparently ESC is one of the go-to shops for B&O gear. Not long after I picked up my friends turntable another friend gave me an old Marantz quadraphonic receiver that had seen some better days. I fixed a few things on it myself, but when it came to chasing a dropped signal through the preamp section and getting the FM tuner to receive in stereo, I was in over my head. I couldnt be happier with how its working now after several trips to ESC as it was slowly brought online and new issues were found (there were several different, separate problems with this unit when I got it.) Price I thought was quite fair and Jimmy is a cool guy. Ive since taken him an old HK power amp which hes fixed but I havent tested yet and a Luxman receiver which he still has.

Jimmy repaired a Parasound A1 amplifier and a Velodyne sub. Reasonable price and good communication. Highly recommend.

I was having problems with my 45 year old Marantz receiver and took it to ESC. Jimmy Diaz is a true professional, fixed the issues, reasonable price, timely service.

Rarely do customer service and quality workmanship go hand-in-hand. Yet Jimmy redefines both. I shorted out my Rotel amp. He repaired it along with upgraded fixes per Rotel bulletins. Jimmy explained what he would do; he did it; and he answered all my questions. If you need electronics repaired, there is only one place to go: Jimmy at Electronics Service Center in Rockville, Maryland.