“Marcus busts his ASS out here to keep these shows going and basses rolling. He’s half my size but does four times the work I have to do out here. It’s easy being Kael. And, that’s a direct result of the work Marcus puts in each day. Love ya my friend! I appreciate the f#@% out of ya!”

— Chris Kael, Bassist, Five Finger Death Punch

“We had Marcus as our guitar tech and it was freakin’ awesome! He’s a rad dude and knows his way around a guitar. Then the Death Punch guys stole him from us.”

— Satchel (Russ Parish), Guitarist, Steel Panther

“I’ve had the luxury of having two great, really phenomenal guitar techs during those years of heavy touring with my vintage guitars, Marcus Schefer and Rem. They really looked after me, always made sure my vintage guitars were well taken care of and secure.”

— Keith Nelson, Producer, Writer, Guitarist, Buckcherry Founder

“Marcus set my action lower than I ever thought possible, and he dialed in my amp rig so well my tone is unmatched. These guitars play better than ever and my tone is stellar!”

— Dan Knight, Guitarist, Brother Clyde

“This is hands down the best this guitar has ever played, period! Thanks to Marcus @ MR Guitar Service for the best set up and repair work ever. I had no idea how out of shape my guitar was until Marcus worked his magic on this old thing. My old clunker is now my favorite and best playing guitar once again!”

— Pete Longwood, Guitarist & Producer

My guitars have never felt better, been more brilliant sounding, cleaner, and now perform all around amazingly since Marcus worked on them. Truly a master of his craft, this guy will make your guitar play and sound great!

— Mark Persinger, Guitarist

“Marcus is the BEST guitar tech I’ve had in 30 years of this band. All my guitars go to Marcus, in the recording studio, on the road, and at home.”

— Art Alexakis, Guitar/Vocals, Founder, Everclear

“Marcus is a man of many talents. A jack of all trades and a hell of a stand up guy. He always had my guitars feeling and sounding great. He’s an incredibly hard worker that makes it all look easy and is always there when you need him. In fact, he made my life so much easier on the road that I had to save his one night… but that’s another story.”

— Dylan Villain, Guitar/Vocals, The Wild!

“Marcus is a true master of his craft. He has worked on 5 of my guitars and his work is always exceptional. He is an artist who takes the same care and time on every guitar he services. It doesn't matter if it is from a world-class musician or a weekend warrior. I can't recommend Marcus highly enough. No matter if it is a simple tune up or a complete restoration; you want Marcus for the job!!!”

— Scott Jenkins, Guitarist, Solo Artist

“Marcus makes my arsenal of ESP Viper guitars into WEAPONS of RAWK DISTRUCTION! No really, they play and sound terrific. :) He is easy to work with, hugely knowledgeable, and has a great network for anything you need. All my guitars now go to MR Guitar Service!”

— Drew Peterson, Guitarist, Pagan County Rebels

“Marcus constantly surpasses my expectations and I am very, very picky. His attention to detail is unmatched and he’s always thinking one step ahead.”

— Jon Weil, Guitarist & Producer

“Marcus is the man!! Wow! I brought him 4 basses to set up and have some electronics work done. Each one of them came back amazingly clean, and playing better than I ever thought possible. I couldn't be happier!!”

— Jerry Hansen, Bassist

“You don’t know how good it can be till it’s the best it’s ever been. Marcus, my guitar sings now!”

— Sam Shipley, Guitarist

“Marcus is an absolute master mind and great guy! For over 25 years I had one tech that I went to for anything I needed done on my basses, and when he moved away, I thought I’d never find another tech that I could trust enough because I am particular. I was introduced to Marcus and since I started going to him for my setups and repair, he does not cease to amaze me by making it better than I thought possible! Marcus is attentive and thoughtful to my preferences and concerns, communicative with turn-around times and stellar with the finished product. I look forward to continuing to send my precious basses to Marcus for years to come!”

— Tim Lang: Bass player, Pagan County Rebels , Demolition Kings, Spector, Ernie Ball, Fender

“Marcus is the only technician to work on my guitars over the last 30 years. His eye for detail, and ability to make a cheap guitar play like a custom shop model is amazing. Thank you Marcus, you are the best!”

— Rick Beck, Guitar/Vocals, CMD, Solo Artist

“My guitar plays great, the problems are solved, and it also has more sparkle and resonance than before. Thanks for the work, Marcus and Terry are great to work with. Price is more than fair and less than I expected. Thanks for everything!

--Tyler Boley, Session Guitarist, Solo Artist

“Anyone needing work done on their guitar should, without a doubt, use Marcus. I wanted a roller bridge on my Gretsch but Marcus discovered that the only bridge that comes close to the correct size was a fraction of an inch off. He disassembled a new roller bridge and put each tiny roller in my stock bridge. Who does this?  His attention to detail is second to none.” 

—Larry Star, Guitar & Vocals, HOTROD.RED