432 EVO high-end version PDF Print E-mail
Tuesday, 26 November 2013 18:32

432 EVO high-end version

The 432 high-end version is a high-end music server with live 432 Hz retuning, competing with the best products (think Aurender and Lumin) at a fraction of the price.

It adds many features not present in the standard version:

1. spring suspension system

Most music servers on the market use cheap 3.5" green drives from manufacturers such as WD. While these drives claim to be low noise, they still have (seek) noises that can be heard from 10ft (3 meters). To quiet such a drive they are typically put in an enclosure which is decoupled from the music servers case by rubber bumpers. Unfortunately, this solution still passes vibration to the case.

The 432 EVO high-end version solves these problems in a completely innovative way:

  1. no 3.5" drives are used, but only the more expensive 2.5" notebook drives are used in all 432 EVO models
  2. these ultra low noise low power consumption 2.5" drives are than suspended on a custom inhouse built platform that features a spring suspension system
    no microphonics are passed from the HDD back to the enclosure (high-end version only)

The difference with and without spring suspension is so big that we already had customers with the previous top model upgrading to the current state, including the spring suspension system.

2. RAM playback

The high-end version adds RAM playback. We use a technique that works on the fly: when a new music file is played, the file is read into memory in a fraction of a second. It has been implemented in such way that it does not add delays and does not break gapless playback.

By reading the whole file as one big chunk of data, we eliminate further access on the SATA bus. In terms of sound quality, RAM playback relaxes the sound.

3. Overdimensioned linear supply

Up till May 2016, we delivered the 432 EVO high-end with one HD-PLEX supply in either Black or Silver.

Since June 2016, the 432 EVO high-end is powered by a dual Sbooster BOtW supply:

The EVO high-end version now has a dual high-end linear power supply, with separate DC rails for the server and the high-end USB 3.0 audio board. This is again one step higher than the HD-PLEX power supply where both 12V and 9V output voltages required by our high-end model were shared via one transformer. Now each voltage has a separate supply. The server part of the 432 EVO consumes about 1 amp at 12V, which is a third of what the supply can provide. For the audio part, the 9V supply consumes a fraction of what the supply can do.

The standard version has an external laptop style power supply with similar total output power (150 Watts), but is not linear but switched mode.

More info about our power supply history & choices can be found here.

4. High-end USB 3.0 audio

The high-end model includes a high-end USB 3.0 interface, which is backwards compatible with all USB 2.0 dacs, offering superior sound than any onboard USB outputs. This USB interface which has been specially designed for audio features low noise output with power switchable on/off, and low jitter USB clocks. The card receives a dedicated feed from the linear supply, completely isolating the power from the server.

The evo high-end version includes wiring guides to make setup a very easy process.

5. SATA filtering

the SATA cabling is electrically noise filtered, eliminating any difference between SSD and regular HDD's (high-end version only)

6. software jitter tuning

We went as far as the measure the software jitter of the 432 EVO using very expensive equipment.
This allowed us to tune the Linux kernel for better sound quality for our current platform.

This special tuning is not present on the ESSENCE and STANDARD model, but makes a big difference!

7. optional high-end DC cables (only for the older HD-PLEX based models)

Optionally the 432 EVO can be ordered with a better DC cable, made from the best silver-gold materials:

432 Hz

All evo models add live 432 Hz processing not available anywhere else. Contrary to many youtube 432 Hz demo's, our 432 Hz processing is artefact free and is build on world class DSP. There's no resolution or detail loss, which was verified by 6moons in the 432 Hz plugin review. The 432 Hz processing just does the opposite: the sound will be more enjoyable, there will be more clarity, less fatigue. The sound will become more analog and have qualities unseen in any digital solution. Just read our testimonies available in the left columns.

The 432 Hz plugin works on the fly, and can process any music file from CD quality up to 768 Khz including DXD files. It can also process DSD files: DSD64, DSD128 and DSD256 are well tested.

The evo high-end version music server is very power efficient and is always running cool. The evo high-end version can rip, stream, play internetradio, play music from it's local HDD and optionally from any NAS. We provide 2 TB internal storage options, good for up to 6000 CD's. The storage can be expanded to 6 TB (special request only) and/or extended via a NAS. The evo high-end version is used as a high-end USB transport, that connects directly to your USB dac.

All our 432 Hz music servers are running the same Linux software platform, which is identical in terms of remote control. You can use the official Logitech Squeezebox Controller App (which works for Android and Apple), the builtin webinterface (any platform) or via Apple specific apps such as iPeng and Squeezepad. The 432 evo high-end version also offers internet based software updates from our own update server, which are created and tested by Klinkt Beter and includes remote support via a built-in VPN.


The 432 evo high-end version can be ordered in silver or black. The "warm" coloring in some of the above pictures of the silver version is due to warm lights in our demo room.
It is truly silver and not "crème" (beige) colored.

The high-end version includes a matching power supply.


Dimensions of the 432 evo high-end version are compatible with the 43 cm hifi standard:

Music server:    435 x 325 x 60mm (W x D x H)

Shared features between all models

  • USB class 2.0 output and HDMI audio
  • rip CD's as (uncompressed) flac using quality TEAC drive
  • full access to music collection on HDD (no added DRM)
  • plays almost all formats: WAV, AIFF, FLAC, WMA, MP3, ....
  • output PCM files bitperfect, from CD 16/44.1 up to 32/768 kHz and DXD
    or output any PCM files played at 432 Hz, in the following rendered resolutions:
    also applies to internet radio, qobuz, spotify, .... which can be output as-is (typically 16/44.1), or with 432 Hz conversion to any output resolution
  • output DSD files bitperfect as DoP
    or render them as PCM with 432 Hz conversion, in the following rendered resolutions:
  • Bitperfect and gapless playback
  • Spotify, Qobuz, Wimp & Tidal (will be announced soon)
  • Internetradio stations, more than 10000
  • android clients: Logitech Media Controller
  • apple clients: Logitech Media Controller, iPeng, Squeezepad
  • control your 432 EVO via webbrowser (including configuration and playback interface)

Upgrade features:

We are the only manufacterer where you can start with the basic model and upgrade to the high-end model later, for the retail difference price + shipping to and from our factory.

    Last Updated on Thursday, 02 June 2016 03:26