My 300guitars Shop is located at 1L Executive Drive Toms River, NJ 08755. Please feel free to contact me if you have any questions or are in need of some tech work. 848-218-0362

Guitar Services

  • Set-ups
  • Fret Dressing
  • Re-fretting
  • New Hand Cut Custom Bone Nuts & Saddles
  • Pickup installation
  • Electronics Work
  • Custom Guitar Building
  • Vintage Restoration
  • Pickup Rewinding
  • Neck Re-setting
  • Binding Work
  • Finish Repair and Touch-ups

Amp Services

  • Basic maintenance
  • Bias adjustment
  • Repairs
  • Restorations
  • Modifications
  • Custom Tube Amp Building
  • Re-tolex Cabinet
  • Hand Wiring Reissue Amps
  • New Speaker Installation

Pennalizer Amps



Click here for information about my custom Pennalizer amps..!

More Info

I am an Eminence, Mercury Magnetics and Mojo Musical Supply dealer.

I have about 30 years experience and do all the tech work myself so you deal directly with me.

My typical hours are Monday, Tuesday, Thursday and Friday: 10am-5pm. Wednesday: Closed. I’m in every other Saturday for hours 10am-3pm. No appointment necessary but it is always best to call or text ahead to make sure I’m in my shop and not running an errand. 848-218-0362.

GSP exit 82A. Rt 37 west 3 miles to the Northampton jug handle (wawa on the corner). Take the jug handle across Rt 37 to the end (a few hundred yards) and turn left onto Executive Drive. I’m in the back of the 4th building on the right. Dark brown building in back unit 1L. I have a sign with my name in the window.



Contact and Find Me

Email me: [email protected]

Call or text me: 848-218-0362

Shipping Info for all repair work:
Please ship all repairs to:  1L Executive Drive Toms River, NJ 08755

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Shop Sample Work

Customer Love

“Billy has built the finest amps for both studio and touring I have found.  I’ve put away all the old ragged tweeds since I’ve been using Penn Amps.  He always is able to get just what I need and always in a timely fashion. He’s considerate of my playing style and alters his designs to suit each players need.  I have not found an amp better or more carefully made.  And never mind the sound, it’s just killer…”

- Brian Fallon - The Gaslight Anthem

“The passion, knowledge and experience Billy possesses is evident in everything he does. It has been an honor to have gotten to know Billy and to have him work on my gear. A true professional in every respect! I can’t imagine my life as a guitarist without him”.

- Erich Lipinski

I can not say how happy I am about reconnecting with my old friend Billy Penn who has really helped me get all of my guitars and amps on the level of tone and playability that they need to be. As most of you know I am a little particular about these things and Billy Penn has been very patient with helping me see all of my visions to fruition. If anyone needs to have their gear put into gear you should contact Billy. This guy is a master builder. He cares about his work and stands behind it. Stop letting clowns work on your gear.

- Steve Marinaccio

Hey Billy just wanted to extend a thank you for the incredible work on my acoustic.  It plays amazingly, and just feels & sounds so much better.  You’re truly a dedicated and fine craftsman.  I appreciate it greatly!

- Dan Tilgner

“Forgot to drop you a line about the bassman – it’s a totally different beast. Unreal. The headroom goes on for days. I really can’t believe its the same amp! I’m using it with a newer fender 2×12 closed back cab in which i installed weber legacy series speakers. The low end is crazy, just crazy. Anyway – great job and thanks again”!!! 

- Pete Andrews

I am very satisfied with the set-up, and the fast turn around.  With the “lower” action it feels easier to play.  I will definitely spread the word.

- Scott Goldberg

Excellent re-fret work on the Firebird. Highly recommend you to other people! Thanks for the Pro-job on my guitar!

- Rich Chinery

“I had an audition for something recently that was all about Led Zeppelin I — my custom Pennalizer BLEW THE MINDS of the guys I was playing with. They couldn’t believe the sounds coming out of that amp. That album was never in my mind when I came up with the idea….so that’s yet another testament to the amazing work that you do”.

- Peter Lacis

“The 20watt amp is sounding fantastic! Delivered the goods at the gig and I’m finding cool tones all over the place with it. Love the cab w Emenince Tonkerlites too- perfect for my sounds! Makes the 12 string sound like a grand piano”!

- David Nicholas

Great setup man!  Gorgeous fretwork; way better than what the fellas in my area pull off.  I’ll definitely recommend you to my pals.

- John Anderson

Hi Billy, Just a quick note of thanks regarding my repaired 1959 Magnatone 280B amplifier. The repaired amp sounds just incredible now.  This vintage amp is a little unique, so many thanks for your tenacity and attention to detail in keeping the replacement capacitors and tubes true to the amp’s original circuit design.

- Erik Kundrats

Billy- I can’t thank you enough for the awesome job you did on this guitar. I can’t stop playing it. This guitar is better that I thought it could be when I bought it. Thanks again. Maybe ALL my guitars need your magic touch!

- Jack Piccolomini

Billy, I just wanted to thank you for the awesome fretwork and setup!  My PRS never played so good and your attention to detail is second to none! Thanks again!

- Mike Milkovitz

Wow! My Strat is playin itself! It’s never been this good!!

- Skip Myre

I played my guitar for hours last night and the work you did on it well exceeded my expectations! I love the way it plays now!

- William Johnson

The amp sounds fantastic! Thanks again seriously. You have a lifetime customer–thanks for taking care of my amp and Reverb tank.

- Phil Russo

I have to say ‘Thank You’ for the fantastic job! Today I played for the first time, and WOW! The guitar is a tone machine. Perfect for me cause it makes my cheesy licks sound incredible. It plays much better with the new frets and lower action. These frets are perfect for this guitar. Your advise is always on the money. I appreciate the fact that you go the extra mile for me. You are one of a kind. Thank You again!

- Mike Mancuso

Wow I got my Penn VE-M guitar (serial number 002) today and was super impressed with the way it feels. It obviously looks like a cool relic but the neck is killer. I love it. It has a real snap, not sure if you know what I mean but it pops. I’ve put a few hours into her already today and I’m pretty sure it will be one of if not my main guitar now!

- Kristian Page