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Blogs

Under the hood of the PA1

With the PA1, we proudly present an amplifier that offers a musicality like found in the best tube based designs while simultaneously challenging the rock-solid performance achieved with the best solid-state designs. Notwithstanding its relatively compact shape, the PA1 delivers more than 150W, and is capable of driving even the most demanding loudspeakers with ease.read more >

May 31, 2026

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

Fern & Roby: MU2 invites to attentive listening

Christopher Hildebrand of our Richmond (US) dealer Fern & Roby wrote a beautiful blog post called “Learning to Listen to Digital Music Again”. He takes the reader on his personal music listening journey. It started with focussed music listening at home as a kid but he stopped active listening completely after being subjected to MP3read more >

February 25, 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

Stereophile interview with Eelco Grimm

Stereophile’s Rogier van Bakel did an interview with Eelco Grimm after his enthusiastic LS1c review. It is now available online on Stereophiles’ website. Eelco talks about the LS1 design, the company’s history, room EQ, motional feedback, loudspeaker ‘toe-in’, digital audio and more. Highly recommended. read more >

September 3, 2025

Eelco Grimm busts 10 hi-fi myths in Darko Audio podcast

Since Eelco enjoyed recording the MU2 podcast with John Darko so much, he promised to return soon and discuss more general audio topics. Darko’s ’10 myths’ series appeared to be the perfect stage for that. In this episode Eelco states that so called myths are often attempts to simplify complex matter, in other words “blanketread more >

February 6, 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

Behind the scenes of the Bionic Hand picture

The remarkable picture in our advertisements, showing a bionic hand and a human hand hovering above a MU1, was used as an illustration in Eelco Grimm’s essay “Conscious about consciousness” half a year ago. This essay was an effort to help understand how the human mind works, making it easier to feel empathy for peopleread more >

November 2, 2024

Conscious about consciousness

Eelco Grimm has always had a fascination for how the human brain works, both from a psychological and a philosophical point of view. A scientific paper that showed how music reduces cognitive dissonance inspired him to write a deep essay on human consciousness. The writing took a few years and it’s become a text full of mental vistas. A long read to cherish.read more >

April 18, 2024

Introducing… the SB2 subwoofer!

Yesterday we proudly presented our new “SB2” subwoofer on the social media. Many people checked the date and weren’t fooled. But the question remained: what on earth is this sub? Our R&D engineer Floris Schropp found this Intersonic Servodrive SDL-5 subwoofer on a marketplace. It is a unique subwoofer design from the early 80’s byread more >

April 2, 2024

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Designed & made in the Netherlands

Designed & made in the Netherlands

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