Dirty Marshall JMP

Dirty JMPDirty Marshall JMP 100 watt Master Volume model. I cleaned the cabinet & chassis and did a cap job plus a service and new set of tubes. Now the amp sounds great! Ferocious even! 100 watts of JMP power. But what a mess to start with….

Let Me Repair Your Guitars & Amps

The 300Guitars Shop

Billy Penn's 300guitars Shop located at 1L Executive Drive in Toms River, NJ will bring your guitars and amplifiers back to life! Specializing in guitar & amplifier repairs and restorations in New Jersey.

  • Guitar Repairs
  • Guitar Restoration
  • Guitar Amplifier Repairs
  • Custom Tube Amp Building
  • Guitar Pickup Rewinding
  • Guitar Amplifier Modifications

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How to find me

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300Guitars Shop 1L Executive Drive Toms River, NJ 08755 Phone: 848-218-0362