Custom Modifications

  • Frank Levi #34 UYI Mod (Marshall plexi type, 2204, 2203 only) $275.00 
  • Atomic Punk Mod (EVH Magic Plexi) As documented by well Known Amp Techs. $275.00 Parts included. if you want JJ 6CA7's its an extra cost. 
  • Individual External Bias Controls (4 tube/100w config) + Test Points: $450.00 
  • Lineout w/ Level Control: (For amp slaving, Wet-Dry-Wet set-ups, or Re-amping.)$175.00 
  • Filter Capacitor Replacement, F&T types: $250.00
  • Add PPIMV Mod (Master Volume) $250.00
  • Zero Loss effects Loop $295.00


Modifications are to be prepaid before sending in for the work. Your amplifier should be in 100% perfect working order before sending. Any repairs, demodding of existing work, replacement of faulty/worn out parts, re-tubes, etc will be billed at $80.00 per hour plus parts. This will also add to the turn around time of your order. All shipping, duty/customs/brokerage, and/or handling costs are not included in the modification pricing. If your amplifier needs to be re-boxed, a charge of $35.00 will be added. RJS Amplification is not responsible for damages incurred during the shipping process. Any outstanding charges will be due in full when it is ready to ship back to you. Modification work is warrantied for 1 year from the date of completion noted on the original RJS Amplification invoice. This warranty is only valid to the original owner who had the work performed. This warranty is non transferrable. Failure to comply with any of the above terms may result in refusal of your amplifier which may be returned to you freight due. Prices are subject to change at any time.