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JRS Musical Instrument Repair & Sound Services
4.9 ★★★★★ 135 Google reviews · Guitar & music store in Mentone, California
Plan your visit
- Repairs & setups a repair bench comes up in reviews and the store's own info — call ahead for turnaround, since good techs run a queue
- Today see hours ·
- Phone (909) 797-7830
- Website jrsmir.com
Hours
| Monday | 10:30 AM–6 PM |
| Tuesday | 10:30 AM–6 PM |
| Wednesday | 10:30 AM–6 PM |
| Thursday | 10:30 AM–6 PM |
| Friday | 10:30 AM–6 PM |
| Saturday | 10:30 AM–6 PM |
| Sunday | Closed |
What's on the wall
“I would normally setup my guitar myself, but I was having trouble getting my custom Fender telecaster's intonation right, turns out I had been doing it wrong all these years.”
“He did a masterful set-up on my 1964 Fender P-bass, and was quick to point out several idiosyncrasies in the parts on it that were potentially not original to the instrument.”
“I have taken my Marshall amp and two Les Paul guitars to Jack, I don’t think I have ever had my guitars worked on by someone as good as him.”
“He knows vintage tube amps inside and out and approaches the work with serious attention to detail.”
“Jack is a real deal, big time guitar tech who has over four decades of experience with a range of companies from the biggest names in guitar production to boutique builders.”
Brands they deal
“I would normally setup my guitar myself, but I was having trouble getting my custom Fender telecaster's intonation right, turns out I had been doing it wrong all these years.”
“He helped me with a set up on my Gibson Les Paul Standard Adam Jones Signature Model.”
“I have taken my Marshall amp and two Les Paul guitars to Jack, I don’t think I have ever had my guitars worked on by someone as good as him.”
What players say again and again
“Jack worked on my set up, rerouted my guitar, swapped out the pick ups, added stronger POTS, put in a new jack input, and switched from a 3 way to 4 way selector.”
“From there, I can see that Jack is extremely knowledgeable of how an amp works and what needs to be done in order to keep an amp working properly and healthy.”
From the reviews
JRS Musical Instrument Repair & Sound Services saved my Marshall TSL122 combo. My amp suddenly went down (hum but no guitar signal), and after calling around, I found that a lot of places either won’t work on tube amps at all or were quoting wait times a month+ out.
This dude is an ARTIST! I not only got my instrument setup perfectly, but I also learned a lot. I would normally setup my guitar myself, but I was having trouble getting my custom Fender telecaster's intonation right, turns out I had been doing it wrong all these years.
Stopped by over the weekend and dropped off a Peavey 6505+ for a servicing. Jack got it done quick over the weekend. I came to pick it up and Jack let me tested it to see it’s all fully functional. Jack also showed me pictures of the inside of the amp to see what work was done.
Jack is the real deal. He knows vintage tube amps inside and out and approaches the work with serious attention to detail. Straightforward, professional, and clearly experienced — no guesswork, no fluff. He takes the time to explain things clearly and focuses on doing the job right instead of pushing unnecessary work.
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