Ralph Isaacson – Repairman-Designer-Sonic Artist

Call or Text ahead for appointment: 951-295-8101 (Fastest way to get to me)

My Hours:

By Appointment Only: My schedule varies a little day to day in the shop but I’m generally available Monday-Saturday afternoons and evening. Call or text me, I will do my best to accommodate your schedule.

Email: ralph@ifitmakesnoise.com



Located in Riverside, CA near the 91/60/215 Interchange

Interchange Business Center

1440 Third St. Unit 4

Riverside, CA 92507

PayPal Acceptance Mark


Contact me for more information about:

Tube and Solid-State Guitar and Bass Amplifier Repair or Modification

Guitar and Bass Instrument Electronics Repair or Modification

Guitar and Bass Speaker Cab Repair

PA Gear – Speakers – Mixers

Vintage Tube and Solid-State Audio

Hand Built Tube Amps

Hand Built Effects Pedals

Hand Built Speaker Cabs and Cabinet Modification

Effects Pedals Repair, Modification and Custom Design

Mercury Magnetics Transformer Upgrade and Installation

Electronic Musical Instrument,  Lifestyle Audio and Acoustic Quality Consulting

Amp Kit Assembly – Sub Assembly and Small Handbuild Production


Head Phone Design and Acoustic Measurement Consulting  — Experience with Clio Pocket, Bruel & Kjaer 2012, HATS, Bruel & Kjaer Pulse, WinAudioMLS, and Listen SoundCheck



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