The history of the 432 EVO PDF Print E-mail
Tuesday, 21 October 2014 20:14

The 432 Hz software has evolved in many ways

Here's our story:

Q4 2010

I discovered DJ Tiësto is using 432 Hz, and I never understood why his records are so popular until I tested 432 Hz myself.

Geert Huinink is the producer of DJ Tiesto. You can find many youtube video's with his compositions in 432 Hz.
This is what's got the 432 Hz ball rolling.

I studied all there is to know for days about the A=432 Hz, and tested the many methods as shown on the internet.
I discovered the most strange theories, saw that the number 432 was everywhere in our universe, but decided to use my trained ears to do some testing.

Some methods even sounded worse, and while people still promote the flawed pitch shift method, I never used it.
I've found that it killed the upper harmonics, and that it killed the detail and soundstage.

Feb 2011

After careful listening research and secret testing on visitors (who all asked what was playing when 432 Hz was active) even in 300+ groups (we did the PA on some events), we post the first verified 432 Hz method based on foobar on a Dutch forum. It still had issues, but it worked so well that I started using foobar + this method as my main playback system.

The main reason was for collecting all typical debunk reactions, in order to know what to expect. We got hit by all the skeptics, debunkers and trolls, but it provided healthy feedback what to expect if there ever was to arise a working product out of this, which at the time, we did not know how, but it would come some day. We asked a clocking / jitter guru to design a device to implement our 432 Hz idea, but that would cost 10K euro, so we gave it some time, and the solution would present itself.

Some months later, we were even banned from the forum where we posted our method, but we are happy that it happened. It was a waste of time stirring the same debunk soup.

April 2012

Our foobar method was given away almost for free, at 20 euro entrance fee. But we had a room full of 432 Hz users:

When I called them back one year after the workshop, nobody was using foobar: it was too complex to boot a PC, start foobar, drag some music into the playlist.
So we never would do anything with foobar commercially, even though we used it internally and also converted all the car audio on a HDD to 432 Hz.

In that same foobar period, we did a test with 60 test candidates: each had to provide feedback about 6 test tracks, once played in 432 Hz and once played without the foobar plugin.
We came to a 58/60 score: +- 95% had more dots prefering 432 Hz tracks than their original counterparts.

We also visited our Dutch colleagues that work for ID&T (their company organizes Tomorrowland, probably world's best dance festival) and have their own 432 Hz parties:

We discovered 432 Hz thanks to a niburu article, so even though they are sometimes very "new age", it all started thanks to niburu.
We went to their dance party, as they already organized parties where Geert Huinink ( the producer of DJ Tiesto ) was playing, and got interviewed (in Dutch).

April 2013

We discover the little raspberry has a much better output than foobar + wasapi on a fat i7 laptop with windows 7.
So we start investigating the possibilities to use the raspberry, here in a mobile setup at my Linux customer (we provide high-end Linux consultancy) used as a high-end mobile playback system

May 2013

The first 432 Hz music server was a proof of concept running on a raspberry PI, an IFI PSU and a Trends UD 10 as SPDIF converter

While it sounded fantastic and way better than foobar + wasapi + laptop, the limited cpu of the raspberry was the reason for not continuing. It could do 432 Hz processing in 16/44.1, so all highres content and DSD was not available.

The cones are HHG's from Orgonise Africa, they are very cheap and improve the sound quality when placed on top of speakers/equipment.

July 2013

We transferred our plugin idea into a SOtM SMS-1000. Thanks to the faster atom CPU, we could run the plugin up to 24/96, which was a major improvement. The sound quality was also higher than the Raspberry, and 2 TB storage + integrated rip were a no brainer as this was a complete solution.

August 2013

The first SOtM with our 432 Hz plugin was sold to probably our most critical customer, but he heard the big difference, and decided.

September 2013

We did a Vitus Audio + Marten + SOtM presentation at the X-FI show, showing our modified SOtM SMS-1000 with the Klinkt Beter 432 Hz plugin.

The show was very dualistic: one camp applauded our technology (see testimonials) and really heard the difference, and the other camp was trying to debunk us. Most of the debunkers either never listened to our tech, or tried to use the bad "pitch shift method" as evidence. We don't use the flawed pitch shift method. In the end, every major hifi news outlet was talking about us, so it set a lot in motion.

Two weeks after the show, we had the chance to compare our 432 Hz shootout CD (which can be requested by email) on a very expensive system, consisting of the most expensive speakers probably build, and upper class VA equipment. We played the CD in repeat for half an hour and discovered on even the very best systems, source material in A=440 is a weak link, as A=432 even improved the most expensive systems that cost a house.

After this show, I decided to change Klinkt Beter into becoming the manufacturer of high-end music servers.
Creating something was so much more fun than just selling some very expensive gear.

November 2013

In the non-audiophile community, a lot were interested in buying the SOtM, but had not the typical high-end budget or a set that is on par with the SOtM.
So we created an alternative at half cost: the 432 EVO

The evo had a more recent CPU, allowing us to do 432 Hz processing up to 24/192.

Feb 2014

With upgrades in mind (EVO as in evolution), we started adding better hardware: linear power supply and a high-end USB 3.0 card with a separate supply
While we had to do some major kernel tweaking to get it stable, this solution amazed several customers on our open door days that they almost immediately demanded a commercial offer.

We had an Antelope Audio Zodiac Platinum, so we started adding support for 384 Khz and DXD 352.8 Khz. We further refined our conversion method and it became something magical.

March 2014

The kernel tweaking proved to provide a stable music server after one month of uptime, so we took it to the Cafe Engels show.
We also updated the music server software to include support for DSD64 and DSD128, both in DoP bitperfect mode, as well as live 432 Hz conversion output as PCM up to DXD and 384 Khz

At Cafe Engels, we no longer did much effort trying to be the 432 Hz evangelist.

We just played nice tracks for two days, and the reactions were completely different.

Puresound declared our combined set that was shared with colleague Cor Dekker (Musical Reality) and Bernard Knoop (Antelope Audio) as one of the top acts, and SRV was playing the stars from heaven:

May 2014

After Cafe Engels, the EVO starts booming. We get specialist requests. One of our Antwerp customers asks to change the plugin to assume a base frequency of A=441 instead of A=440. This was a fair remark also made by 6moons, so we decided to write this feature. 2 hours of coding and the first proof of concept was working.

Users can now select the base frequency of the plugin to operate on, from A=440 to A=445. There are even sites for classical lovers to find the A tuning of their favorite orchestra. Most modern pop/rock/electonic/dance/jazz is produced at A=440 Hz, but classical orchestra's tend to tune even higher than A=440.

In search of some validation for the higher pitch claims as stated by our customer, we went as far as asking the Open Goldberg Variations team which tuning they used for their sponsored Bösendorfer Grand Imperial, in order to double check our own findings how to retune the Open Goldberg Variations which are a free 24/96 lossless download. Looking at the FAQ, it seems that you can order this piano in different A tunings:

"The pianos are manufactured in the factory at a tuning pitch of A443 Hertz, however it may be altered between A440 Hertz and A445 Hertz according to need."

We verified that they use the A=443 tuning, so by setting our plugin to A=443 as base frequency, the sound of the piano became even more "Grand".

At the same time, several Audio Aan Zee customers discover us, and we create custom mod jobs for the AAZ server.
AAZ uses the same brand as case and similar OS (without any software customizations such as custom builds, custom plugins, ....) , so we removed all parts from the AAZ except for the DVD-drive, and replaced everything with 432 EVO components.

AAZ upgrade customers get identical software as our 432 EVO customers

One even got a 6 TB helium filled drive, complete with it's own dedicated linear power supply (triple linear PSU setup).

to tame this enterprises class drive, we implemented memory playback, so during playback there was no access to the HDD

As a designer, I have both the advantage of 20Y of linux experience since 1995, and very sensitve ears. Doing tonometric hearing tests, the score is 94th percentile. Which means only 6% have better ears. On most tests my score is 90+ accurary, which is "world class performance". So I invented the memory playback purely to avoid seek noises during playback .... I could hear the subtle click from 3m distance, my customer could not.

As I am allergic to HDD noises, we do not even use 3.5 inch HDD's in our normal EVO models, we use high-end 2.5 inch laptop drives, which cannot be heard from the listening sweet spot. They are more expensive and limited to 2 TB, but it's well spent. Most use cheap WD green drives. We don't.

June 2014

Some major breakthrough in our DSP method. The idea came like a vision at 2AM, but our method is now 2.5 times faster without sound quality penalties. It is more elegant and skips some steps that are typical studio logic how typical mastering engineers think. It now allows DXD processing on much slower hardware than what is in the 432 EVO. This version is still beta as we need to rewrite our complete plugin to make it also work with the base frequency system introduced in May. So still beta, but running very well.

This opens up possibilities on low power atom and other low cost boards. We get 432 Hz processing on DXD 352.8 files running in the lab. We tested this visionary method on a 15 year old Athlon 1100 pc, and it played 432 Hz in 24/96 to a Musical Fidelity VDAC with 10% cpu load.


September 2014

Again some major software breakthroughs in the software jitter domain.

We update our music server to a version far beyond a well known distro has even offered (and will never offer, as they completely went the LMS route, which I find worse sounding), and push this over a VPN to some of our dealers. All our Benelux dealers have a direct VPN connection, so we can assist at all time. Audiophiles get remote support using the free teamviewer application, and VPN will be an extra as this takes resources on our VPN server.

We do a remote shootout where I manage the playlist and shootout tracks using old vs new software, while I await their response on an open mobile phone call ....

One reaction stands out:

This is truly a major improvement: what a soundstage, details, presence. As if the musicians are here.

October 2014

For the AAZ server, we're doing partial upgrades, as our software has become more efficient.
It comes down to making a backup of the music, installing our own software, restoring the music, and upgrading the quality.

The distro used never liked 4 TB drives, but we easily rewrite the installer script to add support for such large drives.
All our machines are staged in similar ways enterprises stage their nodes: fully automated.

We added a dedicated supply for the existing USB card, and replaced the 2 TB drive (max vb has supported) with a 4 TB drive and added sata noise filtering.

Our customers reaction after the mod:

"I find the difference enormous!!!! Much fuller, I get more emotionally involved"


"I just heard your demo DSD track from 2L.NO, vocals and violin, very beautiful. I have to go to work, but I can't seem to manage to leave my couch"


One Belgian reviewer on facebook writes: we can no longer ignore you, so we made an appointment to bring the 432 EVO to his Antwerp based listening room.
And a Dutch reviewer will also be testing our 432 EVO.

And 15+16 november is a planned open door days event. Our dealers are also planning events in november. November will become very busy.

One facebook friend that produces TV documentaries even suggested a TV show (and also listened to our demo tracks, one he listened 10 times in repeat, the 432 Hz version, check the testimonials) ...

So the next months anything can happen ;)

Best regards,

Frederic Vanden Poel
designer of the 432 EVO

Last Updated on Wednesday, 17 August 2016 11:43