About Precision Audio Restoration
Precision Audio Restoration (PAR) designs and hand-builds the Derumbleizer in Shoreline, Washington — just north of Seattle.
Purpose-built audio, not marketing
We take a measured, engineering-first view of audio. Speculative upgrades like gold connectors, oxygen-free cable and exotic capacitors are tested — and rejected — when they make no measurable or audible difference. We build components that actually do something.
The Derumbleizer is a result of that philosophy: a device that solves a real, measurable problem (turntable rumble) with a genuine technical approach — phase-based cancellation rather than a bass-blunting filter.
What we build
The Derumbleizer
Active turntable rumble cancellation with a built-in RIAA phono preamp for moving-magnet cartridges.
Custom equalization
Custom bass turnover, bass boost and treble-cut settings tuned to match a specific record or cartridge.
In development
Moving-coil versions, a Deluxe model with variable 78 rpm equalization, and a Signal Processor for tape loops.
Visit us
15517 Dayton Ave N
Shoreline, WA 98133
(just north of Seattle)
By appointment only. Email or call to arrange a visit.
Phone: 206-387-5662
Our approach
Design driven by measurement and double-blind listening tests. If it doesn’t measurably or audibly help, we don’t charge for it. That’s how the Derumbleizer came to be — and why it’s priced below the hype.