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Peter van Willenswaard

Peter’s vinyl corner – Famous Blue Raincoat

It may be a record you never heard of. Or you’ve got it in your collection but didn’t play it for a long time. It was issued in 1987. If you don’t have it or if you can’t find it, don’t worry: there are over 500 on Discogs. I am talking about Jennifer Warnes’ LPread more >

May 1, 2026

Peter’s vinyl corner – Wild Things Run Fast

While I was working on the design of the PW1 phono stage there were a few particular LPs that I used a lot to evaluate my progress. One of them was “Wild Things Run Fast” (GEF 25102) by Joni Mitchell, it came out way back in 1982. This LP is more accessible than many ofread more >

April 2, 2026

Good calibrations – a Turntable Tale

Vinyl is great! Or better: Vinyl can be great. But only if you calibrated your turntable with utmost care and dedication. This story is to help you get there. Don’t expect a 30 page manual, there are better ways these days now that we have Youtube (and DVDs). I’ll get to that in the end of thisread more >

October 31, 2025

Alpha Audio interviews PW1 designer Peter van Willenswaard

Jaap Veenstra of the Dutch online magazine Alpha Audio visited our factory and did a long video interview (in English) with PW1 designer Peter van Willenswaard. Together they dove into Peter’s history of designing phono preamplifiers and the PW1 in particular. In his thoughtful and eloquent way, Peter leads you into his world, the worldread more >

March 19, 2025

Introducing… the PW1

We are excited to introduce our latest sibling to you: the PW1 phono preamplifier. It is the perfect companion for a MU2, an LS1, or any other audio system of your choice. And its sound quality can be called unique by all measures. Grimm Audio’s co-founder Peter van Willenswaard was the chief designer of theread more >

December 16, 2024

Designing the PW1 phono preamplifier

This is a story about the first phono preamp of Grimm Audio, the PW1. I have designed quite a few phono preamps in my time, between 10 and 20 I guess,  and using all types of technology: transistors, fets and tubes. I also analyzed and modified three or four times that number of commercial phonosread more >

December 14, 2024

Deaf audiophile, a moving story

This needs an introduction, hold on. There are many reviewers of audio equipment in magazines on the Internet as well as on paper. But very few of them transcend the all too common audio speak of distortion, coloration, truly amazing, impressive, betters the competition, etcetera. At Stereophile, a magazine I wrote for from 1988 toread more >

April 2, 2021

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Designed & made in the Netherlands

Designed & made in the Netherlands

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