Amazing troubleshooting skills. I brought my 4203 Marshall combo over because I thought the built-in reverb was broken. Turns out Greg was able to quickly diagnose my problem down to the original, aged switch pedal I was using. I'm a happy customer and will bring all my amps to him only. Highly recommended! read more

After months of having people flake on appointments or not return calls, I contacted Greg on a recommendation from a local repair shop, and am so glad I did. He not only checked out my amp the same day, but he also fixed it the same day...and did not replace all the tubes as I asked because "they did not need to be replaced." Such honesty and efficiency are uncommon these days! Any time I have any issues with my amp, or if they need any maintenance, I will be calling Greg. My amp sounds better than it has in a very long time, he's a very nice guy, and he is honest and efficient, as I said above! read more

Greg is one of the coolest people I've met in the heavy metal scene, and easily the only person I will trust with my amp repairs. Beyond being a pro guitarist himself, Greg genuinely treats your gear like it matters. Brought him an Orange OR15 with a dead pilot light that wouldn't turn back on. He had it for less than 6 hours. I dropped it off at lunch, picked it up later that afternoon. Turns out it was a blown fuse and a bad preamp tube. Greg replaced the tube and fixed the fuse for free, only charging me his wholesale cost for the part ($31). No markup, no games. Greg is polite, quick, and surprisingly charitable!! His total price came in much lower than what a lot of places charge just for a bench fee. Wall of sound restored. My Orange has been droning and dooming like sacred ritual ever since. If your tone matters and your rig needs work, Greg's your guy. Absolute class act. read more

I need to post this review for Greg 1st because of his honest approach to helping musicians get their gear running correctly! I was on the phone with Greg for about 5 mins. I explained the problem I had with my bass cabinet , he suggest a plan, I carried it out , now my cabinet is working great! He could have told me to bring it in, I can`t tell what`s wrong with it by not seeing or hearing the problem and bring $140.00 cash just to look at it, ($140.00 an hour) because I do not except credit cards or checks.This is my 1st time Greg and he will always get my business! Thank you so much Greg There are not enough stars to rate you! read more

Greg was everything I was looking for. A local guy who knows his stuff and honest. Great to chat with as well. Will be returning!

Can't recommend enough. Fixed my amp quickly and cheaply. Super nice guy as well. Ten stars are out of five!

Super happy with Greg's service. I was referred to him by a respected friend, and I'm so grateful. I literally took two amps in at 11:15am and got a call that they were ready four hours later. And the bill was less than the bench fee would've been for them at some places. Greg couldn't be a nicer guy. He's a musician and understands how we feel when our daily tools fail. I highly recommend Greg's Amp Repair if you want value for your time and money. read more

Greg did a fantastic tune up on my Roland 201 tape echo. Swift turnaround and spectacular service.

A+ all around, needed a quick repair and Greg got me up and running in record time with a great price to boot. Highest recommendation!

Yes Greg Leon. Took my late '60's Deluxe into Greg in the morning and he had solved multiple issues by that afternoon! This amp never sounded better! Do yourself a big favor and Ignore all the other "amp service" people and make your way to Greg's shop. read more

Had Greg repair a few amps of mine. this time was a 1987x Plexi with some bad resistors. He had it done the same day. thanks again Greg!

My fender super champ was acting strange so I called " fret house " in Covina ( where I bought the amp) and they referred me to Greg. Greg said bring it on out so I did and he tested the tubes and sure enough there was a bad tube the amp purrs now l can sure tell the difference after around 10 years of continuous duty it needed some TLC from Greg I highly recommend him . I will definitely use Greg again and he is very nice person to talk to . Don't waste anymore time if you need amp repair just call Greg... read more

Greg is so awesome!!! My husband's Fender Hotrod Deluxe has been busted for years, but no music stores that we have found repair amps. We called one of the highest rated music stores here and the guy said we had to call Greg and gave me his number. Greg is a super cool dude. We brought the amp to Greg tonight at 5:00 and it was ready in an hour!!! My husband wanted me to mention Greg's cat, Rocky, was the coolest cat ever. He was worth of a mention in this review LOL!! If you need an amp repair, this is the guy to go to. Thank you, Greg! read more

I called Greg when my amp had died. I was able to get it in that same day. He got it back to me that same day. The repair was done quickly, correctly, and very reasonably priced. I'll definitely go back if I need other repairs. read more

Excellent service. Greg did the promised at a fir price and quickly. My amp sings again.

If you're looking for a tech Greg is the guy to go to. Called for the first time and had my amp fixed that same day even though it was the weekend. I had bad pre amp tubes and he replaced all of them and now my amp sounds amazing. Went up and above my expectations and he's a nice guy read more

Greg's Amp Repair - Musical Instruments & Teachers Near Me

Greg is the man. He serviced my Fender '65 Deluxe Reverb that badly needed all new tubes, broken reverb tank, busted foot switch. It sounds like a dream now, better than when it was new. I knew it needed work but had no idea just how good he could make it sound. I'll be sending everyone I know who needs amp servicing his way. Thanks Greg :) read more

A few years ago I took a very valuable serial number 4 Superdrive in for repair. Greg had insisted the transformer was blown and I needed a new one (pretty expensive). I just had the transformers replaced so I asked if he would guarantee his work, and he agreed. No problem, right? Well, when I had to inform him the issue wasn't fixed, he was noticeably angry, but agreed to put the amp back to its previously unmolested status... Well I wish I would have never let him touch that amp again because he carelessly threw the amp back together in about 15 minutes, chassis mounted crooked and all. No excuse for the condition he left the amp in. read more

Greg did an excellent job on my 1954 Fender Deluxe. He cleaned it all up, repaired the issue it was having and did it all at a great price. His professionalism and personal grace really put my experience over the top. I'll go to Greg for all my repairs from now on. He's also a great guitar player and songwriter! read more

Greg's Amp Repair - 1954 Fender Deluxe - Musical Instruments & Teachers Near Me

Greg is so many things--An accomplished musician and killer guitarist that can shred masterpieces without blinking an eye. A genius at fixing tube amps with curiosity, efficiency, and a technical prowess unmatched by anyone I've ever met. A charismatic storyteller and conversationalist. Someone grounded and humble. And, at his very core, a genuinely kind person. Initially, I went in to see Greg because I needed someone to fix my Marshall JCM 800 2x12 combo--my guitar wasn't being amplified and all I could hear was a loud buzz every time I switched the standby on. I took my amp to him on a Sunday, and he fixed my amp (replaced 3 preamp tubes among other things) and the reverb on my footswitch that same day in just ONE HOUR. He charged less for the preamp tubes than the prices I've seen online, and the labor charge for everything was less than the bench fee at other places (places which told me it would take about four weeks just to get the amp looked at!). I was so excited, but when I got back home and plugged in, I still heard the buzz! I called him the next day, and without hesitation, he told me to come right in--and this time, I brought my Jagmaster guitar and cables with me. After some sleuthing, he discovered that the amp was now fine, but it was my GUITAR that was broken! Right then, he opened up my guitar, and sure enough, one of the wires inside was disconnected and the switch was bad. Again, within about an HOUR, he fixed my guitar and even restrung it with brand new GHS Boomers. Then, he started shredding on my guitar, and I've never heard it sound so good! I felt awful that I had taken up his time when he had fixed my amp all along, and it ended up being my guitar that was the problem! I asked him how much I should pay for the guitar repair, but he told me that I didn't have to pay him ANYTHING for it--he said that it would just give him joy knowing that I was all set now. And, as I was leaving, he even gave me a copy of his new album, Tell the Children, which has some massively awesome guitar parts! Even writing this, I am so overwhelmed by his kindness, it makes me a little teary-eyed....I went in to fix an amp, but I came away with a renewed sense of hope. Thank you, Greg, for going out of your way to help a stranger and making the world a better place. read more

In an age of digital modelers and profilers finding an amp repairman let alone a good and honest one is very hard to come by these days. The power tubes on my Peavey Classic 30 weren't lighting up and I needed my amp for a gig so I took it to Greg to look at. Within a few hours of dropping it off he was able to diagnose and repair my amp. My amp needed a new tube so he replaced it. I like that he didn't try to tell me that I needed to replace all my tubes and make extra money off me. Now my amp runs and sounds like new!! Greg does great work, is honest and is an all around nice guy. I'm taking my amps to him from now on. read more

Greg is extremely knowledgeable in his craft and a world class musician. I've been going to him for 15 years with every piece of gear I own. He is definitely my go to guy. read more

My 30+ year old tube amp blew out at a rehearsal on Wednesday and I had a show on Friday night. Took my amp to Greg, he diagnosed and fixed it incredibly quickly and was super reasonable on the price. While he had the amp open he cleaned everything, checked connections, etc. and the amp performed beautifully on Friday. Awesome tech and really nice guy to work with. Would highly recommend him to anyone looking for service. read more

Pro pro pro! Needed a repair for my DrZ Maz18 and came to see Greg. Just an all-around great guy and expert repair man. He's honest, reliable and always finds the issue. He repairs all amp types and pedals too! Highly recommend Greg Amp Repair. read more

Greg is the absolute best. I've taken my amps to him multiple times. It's always a time crunch for me and he's amazingly quick often fixing it the day of. That's unheard of at any other place. He knows what he's doing, very helpful, and his prices are excellent. By far the best guy I've ever used for amp repair. read more

I wanted to give a big shout out to Greg's Amp Repair. Greg certainly knows his amps and did a stellar job on my 83 Marshall 2x12. He gave it the TLC it needed and got it back on track. Most surprising was how quickly he completed everything - mere hours vs. weeks with other techs. His rates are affordable (and the rock and roll stories are priceless). There's a reason so many shops send their work to him, and I highly recommend him too. Thanks, Greg! read more

This guy was too cool! Instead of having me bring my amp to him, he told me how too trouble shoot it and then an hour later beautiful music again! I thought I would be looking at a costly repair. not so. Thanks Greg! read more

Greg is a knowledgable, friendly and honest guy. I've taken in a 1963 Supro Super, 1976 Fender Champ and new-ish Blackstar HT-5R for repairs. Greg does excellent work and has quick turnaround times for extremely fair prices. I'm so glad I found such a great amp tech right down the street from me. HIGHLY RECOMMENDED! read more

Greg's Amp Repair - 1963 Supro "Super" - Musical Instruments & Teachers Near Me

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Greg is without a doubt, the best guitar and amp repair tech around! He's an incredible guitarist as well with a complete knowledge of tone! His training way back in repairing strobe equipment for Balcar, where he learned electronics and soon became renowned in this field. Any tube amps and vintage equipment can be made to sound and look original by taking the drive to his place. He's very fair in pricing and does it right utility the OEM parts he stocks up! He also sets up guitars at very reasonable prices. Most repairs are good techs or have good ears but not both! Greg masters both and he's a great guy! Try him out, you won't be disappointed! read more

Greg Leon is awesome! Service: spectacular! Quality of work: extraordinary! Efficiency: it doesn't get better! The bad news: Greg Leon is human. Meaning, some day he's gonna croak and on that day we'll all be screwed. I went out on a limb and purchased a used Marshall head online through Guitar Center. (Yeah, I know.) When I went to pick it up, I paid for it, and halfway to the car the GC associate tells me the amp has the tubes removed for shipping purposes and when I get home I'll have to put it back together. True story. Obviously, I have never bought a car--used or brand new--and upon pickup was told that I would have to put it back together when I get home; not knowing if it is or isn't broken at the time. Do you know why this analogy works? Because both automobiles and guitar amplifiers need an experienced and educated technician for PROPER assembly, and therefore PROPER functionality. So I explained to the GC associate that since sodomy fetish is not my cup of tea, there was NO WAY I was taking an amp home in pieces unless 1) I was going to be refunded the amount needed to have Greg put it back together and bias the tubes, and 2) that if I wanted to return it for technical issues I would not be told "we're not taking the return because we don't know what happened to the amplifier after you left the store with it." Of course Guitar Center didn't want to accommodate either request--so, I called Greg on the spot to try and get an expert involved, and right away competency seemed to have just shinned from the heavens. He explained that I was indeed correct: in no way should a Tube-Amplifier-Ignoramus such as myself go home and attempt to re-assemble the amp, especially without a PROMISE that no matter what happens I would still have the return policy honored. So, I took the amp to Greg. One of the tubes was blown, and he fixed it up in minutes. I also had him check out my 4x12 cabinet, which I also bought used at GC, and sure enough two speakers were unhooked, and some screws were loose. He fixed all of this up in minutes while I ran to an ATM. All in all I was there about an hour or less and he charged me $60 for everything. I don't have much experience taking an amp anywhere else, but I can imagine it would have been more expensive, and I would have had to leave it and picked it up days later. Obviously, I won't be taking my amp anywhere else in the future. read more

Took my 1972 practically never used Fender Deluxe Reverb in bcus the electrolytic caps were giving way since nobody played it for +40 years. Had just purchased it from a family that used it as a decoration in their home. The thing sounded amazing, except after about a week the electrolytic capacitors were needing to be replaced. (The transformer was obviously working because I played it for a week after I got it.) At the time I did not know anything about amps even though I've been playing for a while now. So I Yelp'd "amp repair," and greg was the first guy that answered and said "bring it in" off the bat so I took my amp in. Few hours later he hits me with the bad news: the transformer is dead. Not sure what that meant, I pretty much lost out on an amazing amp. Wound up selling it for parts. Then I bought another vintage amp (a twin reverb, 1975...too loud lol). Same kind of situation. Had been sitting in someones garage for the last few decades. (The twin I bought on ebay). So I needed the same thing done, had some free time on my hands, thought I'd learn about it amps... Ordered the caps, learned about how this stuff works... realized Mr. "Greg" f-'d me real good with his "dead transformer" line. Just upset is all. read more

Very happy with the work Greg performed on two of my amplifiers. He was quickly able to identify and address the issues. Not only is he a master of his craft, he is also very friendly and professional. I would highly recommend his services to anyone. read more

Greg was an amazing guy to meet and chat with about music while he worked on my amp. It was fixed in less than 20 minutes and after 10 years of using that Amp (Fender Deluxe) this is the best it's ever sounded...and I'm not even remotely exaggerating. Great guy, knows what he's doing and he does it well while clearly loving it! Can't recommend him enough. read more

Greg is the real deal. I called him up to have him mount my amp chassis to the head cabinet for a new amp I had built as well as install and bias the tubes for it. He was super cool so I also dropped off my 5150 to have him clean that up, throw in some new tubes and give it a once-over to make sure everything was in good shape. He called me the NEXT DAY to let me know everything was ready to go. The price was very, very fair and everything sounds amazing! He's definitely my go-to amp guy. read more

Greg is the man! Super communicative, responsive, and friendly. He looked over my amp, gave it some new tubes, and we are happy as can be. In and out on a Saturday morning-- so great. He also made some tweaks to my guitar and it's sounding better than ever. He was fast, reasonable, and I will be going to see him again when the need arises. Thanks again, Greg-- and sorry about the wake up call. read more

A truly nice gentleman. He's repaired a few tube amps for me. His work is excellent and his prices are super fair. I appreciate his chill nature and quick turnaround. I have no reservations recommending him whether you have vintage or stock amp to repair. read more

I used Greg's amp repair on a strong recommendation from my friend Dave Neely.... Greg did not disappoint at all. I turned an old fender amp in for a general checkup...... Greg was quick thorough and efficient.... I would go back and use his services anytime.... plus I would recommend anyone with amp issues to start with Greg, he'll get it done! read more

Greg was recommended to me by the great Rick Shea. He did great work, backed it up, quick turn-around. + he's a really nice guy. read more

Awesome help. Thank you! You don't even know me or deal with me. I just called around to a dozen places and all repair guys were either making very general and not so useful comments or hesitated to comment at all. You took time to give very constructive comments and helped me to have a good plan :) read more

Extremely talented guy. Greg knows his way around amplifiers and guitars. I took my 63 Vox ac4 and fender twin reverb to him for repair. They both sound good as new now. Quick turnaround and a fair price. Highly recommend. read more