The 432 EVO STANDARD model is our entry level model, for those who want the full 432 Hz plugin functionality at an affordable price point, or those who want to ultimately own the HIGH-END or AEON model, and start with the STANDARD to upgrade later.

 It has the same software as our other models including the same Linux OS with real time kernel, but in this case the software has basic tuning. 

On the standard, we use the motherboards USB output to connect to your USB DAC. 

In the High-End & Aeon models we go further by having a dedicated USB output card, and on the Aeon & Master models this USB output is  superclock driven. In those models, the OS & under the hood software tuning, invisible to the end-user but clearly audible, is also much more refined.

 However the USB output of the STANDARD combined with the realtime kernel and it's single Sbooster BOtW MK II true linear power supply is already a big step up compared to those who use a PC, MAC (inc Mac Mini) or laptop as their source feeding a USB DAC. 

The STANDARD can run full Roon or Logitech Media Server and our sublime 432 Hz enabled player, which can also play bit perfect to the highest possible quality. It also features a bit perfect Teac CD drive for ripping your CD collection.

• Uncompromised CD ripping using a bitperfect Teac rip facility.
• 2 TB SSHD storage on spring suspension system: ultra low noise laptop HDD with SSD caching.
• Single 12V linear power supply from Sbooster, the Sbooster BOtW MK2. One of the best power supplies on the market, with low voltage drop, high-quality transformer and high-quality DC cable.
• USB 3.0 output supporting USB Audio Class 2.0 to connect to your USB DAC.
• Ultra high-end upsampling with 10 selectable and tweakable upsample filters.
• Bit perfect mode, upsample only mode or upsample with 432 Hz post-processing.
• Custom remote supported Linux with realtime kernel.
Spring suspension system: the 2.5″ low-noise 2 TB SSHD is mechanically decoupled using springs to drastically reduce vibrations inside the chassis.

432 Hz tuning

432 Hz is one of the ways to tune musical instruments, and is also known as the Tuning Note “A” and A = 432. Music tuned to 432 Hz sounds better than contemporary music which is tuned at A = 440. The famous Stradivarius for example was tuned to 432 Hz according to the Verdi tuning

During historical periods when instrumental music rose in prominence (relative to the voice), there was a continuous tendency for pitch levels to rise, also known as the pitch inflation. A higher pitch such as our current A = 440 standard sounds sharper, louder and more “fresh”, but also more aggressive, which is not a quality audiophiles are looking for.

The 432 EVO offer you the possibility to convert your existing music on the fly into the better sounding 432 Hz, without any resolution loss. Several best of show awards we have won are the ultimate proof, and recent research by Maria Renold and a group of 2000 people showed that 90% preferred 432 Hz.

For purists we still offer bit perfect mode on par with the best CD transports, or upsample only mode for those who want to tune the sound. All these modes are live switchable.

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Linux

432 EVO uses a custom realtime Linux OS tuned for ultra low software jitter and reduced entropy.

Solidstate Drive

The 432 EVO can be optionally be ordered with single or dual noise filtered audio grade SSD’s, leading to a 100% silent solution. Can be ordered with 2 TB, 4 TB or 8 TB of total SSD storage.

HD Storage

The 432 EVO Standard comes has a 2TB low noise hybrid storage on a custom spring suspension system combining the best aspects of HDD’s and SSD’s in a single drive. Full SSD’s are also possible.

Bit Perfect Ripper

The bit perfect Teac rip drive is hand tested and compared against test CD’s for perfect operation.

Hardware Boost

The HWBOOST option doubles the RAM, and has a faster CPU and better clock. It must be ordered as an option with the High-End.

USB DAC output

Connects to your USB DAC.

Single SBooster External Power Supply

The importance of a pure and clean power supply for digital audio cannot be stressed enough. Digital audio’s enemy is noise, and much of that comes from poorly designed power supplies or cheap SMPS (switched mode power supplies). In fact a dirty power supply can not only ruin the sonic performance of a server, it can also inject noise down the mains to infect the rest of your system!

The Sbooster power supplies are perfect for this purpose, and offer a very stable 12 Volt supply, from which the 432 EVO Standard draws less than a third of what the supply can provide.

When upgrading to Aeon or High-End, a second Sbooster BOtW will be added, as well as additional internal parts and the software tuning of those models will also be activated when upgrading.

With the 432 EVO server lineup, you can start at your own budget and upgrade later.

Roon

Comes pre-installed with a recent full Roon Core (not just endpoint). A separate Roon license is required.

Tidal streaming

Compatible with Tidal subscription-based music streaming service that combines lossless audio and high-definition music.

Qobuz streaming

Compatible with Qobuz streaming service with more than 40 million tracks available, and also offers true 24 bit streaming.

Internet Radio

Supports thousands of internet radio stations, and common formats including AAC, AACv2, MP3 and lossless FLAC stations.

Logitech Media Server

LMS is a very stable music server with two decades of software improvements, and is still supported.

Spotify

Compatible with Spotify, currently the biggest digital music service that gives you access to millions of songs.

iPeng controller

LMS users can use several control apps, including iPeng or the LMS web interface.

SqueezePad controller

Squeezepad is another controller, and like iPeng can control the LMS library manager.

The 432 EVO Standard

Technical Specifications
AUDIO OUTPUTS
Digital output
Several motherboard USB outputs supporting one or more USB Audio Class 2.0 DAC’s
Network streaming with realtime scheduling to any Roon endpoint and Logitech / Squeezebox based players
CONNECTIVITY
Ethernet
1x RJ45 for realtime clocked gigabit supporting true gigabit ethernet ISP’s
USB
4 ports available for USB audio & backup
2x USB 3.0 ports for backup or connecting additional USB dac’s
2x USB 2.0 ports for connecting USB dac’s
HDMI
HDMI port supporting HDMI dac’s and surround processors / receivers
KVM
VGA, DVI, HDMI and keyboard/mouse service ports – normally never needed as the EVO is VPN supported
OPEN FILE FORMATS
Logitech Media Server
All common formats including DSD, WAV, flac, MP3, ogg vorbis, aac, … Passthrough of MQA
Roon
MP3, WAV, WAV64, AIFF, FLAC, Apple Lossless, OGG, and AAC at resolutions up to 32 bit 768kHz. Roon also supports DSD64, DSD128, DSD256, and DSD512 in the DSF and DFF formats.
DRM FILE FORMAT
Logitech Media Server
Ogg Vorbis as supported by Spotify Passthrough of MQA towards MQA DAC when using bitperfect mode
Roon
MQA first unfold supported & any MQA feature in Roon As MQA does not recover any new audio data in the second unfold, second unfold can be replaced by 432 EVO’s own upsample which also can support minimum phase rendering with one cycle of post-ringing, or the superior sounding Archimago minimum phase filter.
AUDIO TRANSFORMATIONS
Bitperfect mode No audio transformations occur, unless DAC does not support sample rate or bit depth of format, otherwise true bitperfect matching or even beating the most exclusive CD transports
Upsampling-only Output most DSD & PCM formats in any input samplerate as 24 bit or 32 bit output in one of the following output samplerate:
44.1K, 88.2K, 176.4K, 352.8K and DXD, 706.6K
48K, 96K, 192K, 384K, 768K
432 Hz mode Same as upsampling mode, but with 432 Hz processing without resolution loss. 432 Hz and upsampling are a combined one step algorithm, therefore no additional load is caused on the CPU when using 432 Hz mode compared to upsampling
SUPPORTED TUNING TRANSFORMATIONS USING 432 Hz MODE
Input pitch 440 Hz up to 445 Hz in one step increments
Other pitches can be added by special request
Output pitch 415 Hz
426 Hz
430.5 Hz (Equal Tone Temperament)
432 Hz (Verdi’s A, Pythagorean Temperament)
440 Hz (today’s Concert Pitch) → used for upsample-only mode
444 Hz
Supported input formats Any audio and file format from local files on the internal storage on the EVO or a NAS, internet radio, on demand streaming services such.
444 Hz mode not compatible with live internet radio
UPSAMPLING RECIPES
For Upsampling-only and 432 Hz modes
Linear phase User tunable linear phase filter, including tuning of processing buffer size and several precision options. All frequencies have the same delay through the filter.
Minimum phase User tunable minimum phase filter, including tuning of processing buffer size and several precision options. No pre-ringing.
Post-ringing can be regular long tail “minimum-phase” without aliasing, or reduced MQA / Ayre inspired one cycle of post-ringing with free bonus aliasing, create pseudo ultrasonics.
Intermediate phase The only server on the market supporting Archimago’s Intermedia Phase upsampling, the most ideal filter with mainly post-ringing and no phase issues within the audible range.
432 EVO implements his original recipe, and two improved variants of this filter
AUDIO SAMPLE RATES
Sample rates All common multiples of 44.1 and 48K
All common DSD formats
Bit depths 16, 24 and 32 bit
CONTROL APPS
Roon Official Roon remote running on Apple or Android tablets & phones
Desktop version of Roon for PC or MAC acting as a Roon remote control
Logitech Media Server Any web browser for web based version of GUI
SqueezePad (iPad)
iPeng (iPhone/iPad)
Orange Squeeze (Android)
Squeezer (Android)
Squeeze Remote (Windows)
CONFIGURATION INTERFACE
Web Gui Web interface usable on any phone, tablet, laptop or desktop:
1. Configure the 432 Hz enabled player
2. Check the riplogs
3. Switch between Roon & Logitech Media Server
4. Several other system configuration parameters not often changed
HARDWARE
Ripdrive Hand tested Teac slot-loading, tested with at least 5 retail CD’s which are known to cause rip issues on some drives. All CD’s must past our extreme test.
Default storage Ultra low noise laptop 2 TB SSHD (hybrid HDD+SSD) on spring suspension system, with SATA noise filtering and SATA protocol tuning for lower EMI
Storage upgrades Optional 2 TB SSD or 4 TB SSD or 2x 4 TB SSD merged as a virtual 8 TB instead of 2 TB SSHD is possible. Please ask your reseller for pricing.
CPU Model with HWBOOST: J4205 tuned to a more constant power draw for lower software jitter. 
More modern and faster than many competitors who use the old N4200

Model. Without HWBOOST: non-disclosed quad core CPU slightly slower than the J4205, but still fast enough for Roon
Memory Model with HWBOOST: 8 GB, plenty for Roon even when importing larger collections.
 Otherwise 4 GB, large enough for music collections up to 2 TB
SUPPORTED STREAMING SERVICES
Roon Internet radio, Qobuz and Tidal
Logitech Media Server Internet radio, Qobuz, Tidal, Spotify and any service for which an LMS plugin is available
REQUIREMENTS
Mains supply 100 Volt AC 50/60Hz / 110 Volt AC 50/60Hz
115 Volt AC 50/60Hz / 120 Volt AC 50/60Hz
220 Volt AC 50/60Hz / 230 Volt AC 50/60Hz
240 Volt AC 50/60Hz
True dual linear power supplies
Internet Internet connection required for updates, VPN support & metadata retrieval.
Can work standalone (e.g. hifi shows, shows on location) with just a Wi-Fi router attached via ethernet and no active internet connection
DAC USB To use the superclock based USB output, you’ll need a USB dac conforming to USB Class Audio 2.0 standard (most DAC’s follow this standard)
Network endpoint To stream to endpoints, you’ll need Roon or Squeezebox compatible endpoints
PHYSICAL
Colour Black or silver
Weight Server 5 KG
PSU 1.85 KG x 2
Dimensions PSU: 240 x 130 x 75mm
Server 435 x 325 x 60mm (W x D x H, 69mm including feet)
What’s in the box Server
Linear PSU with included DC cable
Manuals & Quick Guide
Chassis Modular chassis which will support future hardware updates such as new main boards as they come to market
WARRANTY & REMOTE SUPPORT
2 years limited warranty
2 years VPN support included with the 432 EVO