© 2019 Thunder Data Co. Ltd. All rights reserved.

Rhein Z1

Music Server of Craftmanship

Focus on extracting and purifying the essence of music

Feel the essence of digital music, let the music fully restore the live effect and make you be on the scene!

Custom Built Motherboard for Audio

Customized and dedicated motherboard for audio usage. Low noise for  high quality music playback, shortest data path make the smoother and more pure data transmission possible. It consumes less power and introduces less noise on power rails to ensure more stable USB and network signals. The independent USB AUDIO dedicated circuit makes USB AUDIO processing isolated and gets less interference. As a result, data transmission is more stable, and jitter during data transmission is reduced.

Ultra Low CPU Power Consumption

The intel mobile series CPU consumes ultra low power consumption (as low as 6W) to reduce electrical noise from CPU and make the signal inside Rhein Z1 to be more stable and prevent from affecting audio device nearby.

Over Designed Power board

Customized and over-designed power board, which is capable of 160W output while Rhein Z1 only requires 40W, provides sufficient power to the motherboard and SSD and ensures stable data transmission.

High Quality Chassis made of Aerospace Industrial Grade Aluminum Alloy with CNC Processing

Compact and ingenious industrial design make Rhein Z1 an artwork. Fan-less design makes no mechanical noise. Rhein Z1 appearance obtained Chinese patent certification.

Patented Structure Design

The groove structure design has the feature of reducing signal interference, standardizing the line direction and placement. The design has obtained Chinese patent certification.

Patent Certificate Of China 

High Permeability EMI Absorber

Furthermore, to eliminate high frequency electrical noise from digital circuits, Rhein Z1 uses specially chosen EMI absorber at the inner side of bottom case to absorb EMI noise from internal digital circuit including DRAM, CPU, …, and so on.

Silent Angel Select

High Quality Cable and Wires

To get more stable signal and get less electrical noise emission during signal and power transmission, Rhein Z1 used carefully chosen high quality cable and wires in power button signal, power LED signal, SATA power and SATA signal.

• Power LED and Power Button Signal


Teflon coated ​silver plated  wires is suitable for the connection of electrical equipment and instrument lines under high temperature conditions and high voltage up to 600V. It features high temperature resistance, aging resistance, acid and alkali resistance, moisture resistance, water resistance, oil resistance, corrosion resistance, flame retardant and other properties. 

• SATA Power Wires

Ordinary copper wire at upper side: The copper wire crystal is irregularly crystallized, and the conductivity is poor. As a result, it generates more electrical noise while power loading varies during system is accessing SSD.

Rhein Z1 uses OFC copper wire as SATA power wires: The copper wire crystal is evenly distributed by the high temperature hot casting mode continuous casting method, and the current conduction is good and introduce less electrical noise while power loading varies during system is accessing SSD.


• Server Grade SATA Cable

The server grade SATA cable is optimized to ensure the stability of the signal transmission by having the irregular distribution of the SATA cable in the foam layer is easy to generate a telecommunications irregular magnetic field, which affects the signal transmission quality. Also it uses durable SATA connectors at both end to ensure the best quality of connectivity.


The special designed exclusive audio SSD features fast access speed, low power consumption, good anti-noise, and stronger anti-interference. It effectively ensures the stability of the output signal, better output data stability, introduces totally different listening enjoyment and experience for you, and brings more fidelity to music.

Built-in Exclusive Audio SSD

Efficient VitOS Operating System

The Rhein Z1 features a VitOS operating system designed for music servers that focuses on streaming services. VitOS improves machine efficiency, performance stability and network latency issues.

VitOS Block Diagram
VitOS: An operating system specially built for music server.

1. Dual Firmware: Prevent from being damaged while firmware upgrade.

2. Network accelator: Accelerated network processing

3. USB Audio Optimizer: Optimized USB Audio processing

4. Task Manager: High efficiency task management

5. Application Manager: Able to expand more and more application.

6. System Manager: Event-trigger design gets lowest system loading.

Mobile app for VitOS: VitOS Manager Features

1. Discover Rhein Z1 and adjust the network settings of Rhein Z1
2. Install and manage Roon Server in Rhein Z1.
3. Control the music importer, which imports music from the USB hard drive to the data disk in Rhein Z1 and view the music import details and result.
4. Update the firmware of Rhein Z1.

VitOS Music Server
Performance Comparison

Gigabit Ethernet

Average Latency: VitOS average latency is the same as ROCK, and lower then Mac mini for 23.72%
Max. Latency: VitOS max. latency is lower then ROCK for  5.21 %,and lower then Mac mini for 8.65 %
Standard deviation of latency: VitOS is lower then ROCK for 7.69 %, and lower then Mac mini for 11.11 %
Variation of latency: VitOS is lower then ROCK for 14.29 %, and lower then Mac mini for  25 %

Test topology:

Test method: Play the same music track, captures network packets on Roon player and analyze the latency of response packets to and from Roon server. Then analyze the Roon server response packet latency and compare the result between different systems.

Lower latency implies better music server performance.

Test track:

Filename: 03.Mr.Blues.flac
Format: FLAC 176.4 KHz / 24bits
Album:I Love You
Track duration: 4 minutes 40 seconds
File size: 138 MiB

Network packet capture software:

tcpdump version 4.9.2

libpcap version 1.9.0-PRE-GIT (with TPACKET_V3)

OpenSSL 1.1.1b  26 Feb 2019


1. Specially designed operating system: VitOS
2. 250 GB Silent Angel Customized SSD for System Disk.
    1 TB Silent Angel Customized SSD for Data Disk (optional).
3. Up to 2 simultaneous zones for multi-room streaming applications.

4.High quality and thick aluminum alloy chassis.
5. Ultra low power consumption SSD and isolated power circuit design inside the SSD to ensure low electrical noise emission from SSD.
6. Low power consumption CPU to reduce the electrical noise emission from CPU.
7. Customized Silent Angel Noise Absorber (SANA) inside.
8. High quality SATA cable for more stable SSD data transmission. 
9. OFC (Oxygen-Free Copper) SATA power cable for better power feeding to SSD. 

10.USB 2.0 and USB 3.0 ports for external storage expansion. 

11.USB Audio port for USB DAC connection. 

12.For engineer test only, DO NOT USE: HDMI

13.Fan-less design.

Product parameters


Data Disk:  

Power Inlet: 


black, silver; (requires other colors can be customized)

standard 250G SSD data disk, can be purchased with a 1TB SSD data disk

12V DC @ 3A max. (Spec. 5.5mm x 2.5mm, tip carries +12V)

USB Audio X 1; USB 3.0 X 1; USB 2.0 x 2; Gigabit Network X1
HDMI X 1 (service interface); power connector X 1



DSD Support:

200x200x65 (mm)

6 KG ( Gross Weight )

Please noted that DAC supports DSD with "DSD Native" is required for you to play DSD music up to DSD256 smoothly. If your DAC supports DSD with "DoP" (DSD over PCM) mode, then the Rhein Z1 only support DSD music up to DSD64 (which means DSD128 or DSD256 is not supported in DoP mode).

Silent Angel Rhein Z1 is a platform, which includes our proprietary hardware and our audio-grade Operating System (VitOS), both designed and manufactured by Thunder Data Co. It allows customers to install 3rd party applications of their choice (They pay the vendor directly) . Thunder Data also provides an SDK to assist porting of 3rd party applications to Z1. Please contact support@thunder-data.com for more information. 

Download Rhein Z1 Product Information