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Overview

Silent Angel Rhein Z1 Plus 4TB High-Performance Music Server


The Silent Angel Rhein Z1 Plus 4TB is a high-performance audiophile music server engineered for high-resolution streaming, local music storage and advanced digital audio playback. Combining an Intel quad-core processor, high-speed NVMe solid-state storage, precision clock technology and a fanless aluminum chassis, the Z1 Plus provides a dedicated digital source for reference two-channel audio systems.

Designed to operate as a Roon Server, Roon Bridge, DLNA server or USB audio transport, the Rhein Z1 Plus offers flexibility for a wide range of digital playback configurations. Its USB audio output supports PCM up to 32-bit/768kHz and DSD512, while its processing capabilities enable Roon DSP transcoding from PCM to DSD256.

Two independent Gigabit Ethernet ports allow the Z1 Plus to connect to a network while providing a separate connection for a compatible network audio player. Each Ethernet port has its own precision TCXO clock, and a dedicated 25MHz external master clock input provides an additional upgrade path.

Internally, Silent Angel combines carefully selected components with electromagnetic interference filtering, dedicated power regulation and a graphene-assisted cooling system. The result is a purpose-built music server designed to accommodate demanding high-resolution libraries and sophisticated streaming systems.



 

Key Features

  • Intel quad-core processing: Intel J6413 processor supports music server applications, simultaneous playback and Roon DSP processing.

  • High-resolution USB audio: Supports PCM up to 32-bit/768kHz and DSD512.

  • Roon compatibility: Operates as a Roon Server or Roon Bridge, with DSP transcoding support up to DSD256.

  • NVMe SSD storage: Available with 250GB or 4TB of high-speed solid-state storage.

  • Dual Gigabit Ethernet: Separate ports for network connectivity and a compatible network audio player, each with its own TCXO clock.

  • 25MHz external clock input: Supports an optional compatible external master clock.

  • Enhanced USB noise filtering: Dedicated circuitry designed to reduce high-frequency electrical interference at the USB audio output.

  • Fanless aluminum chassis: Graphene-assisted cooling and a copper heatsink provide passive thermal management without fan noise.

  • VitOS operating system: Dedicated music server software with management through the VitOS Manager mobile app.

  • Multiroom capability: Supports simultaneous output to as many as 10 audio players, depending on configuration.


     

Designed for High-Resolution Music Streaming

The Rhein Z1 Plus provides a dedicated computing platform for digital audio, eliminating the need to use a general-purpose computer as the primary music server.

Its Intel J6413 quad-core processor works alongside 16GB or 32GB of DDR4 memory and NVMe SSD storage to support demanding playback applications. Users can store a local music library, stream music over the network or connect the Z1 Plus directly to a compatible USB DAC.

Silent Angel's VitOS operating system supports several playback configurations, including Roon Server, Roon Bridge, DLNA and HQPlayer Network Audio Adapter. VitOS Manager provides access to network configuration, software installation, firmware updates, music importing and library backups.

The Z1 Plus can also serve multiple compatible audio players simultaneously, making it suitable for both dedicated listening rooms and larger networked audio installations.

Precision Clocking and Electrical Noise Management

Silent Angel equips the Rhein Z1 Plus with two independent 25MHz temperature-compensated crystal oscillators, one for each Gigabit Ethernet port. This design separates the clocking of the two network interfaces.

For systems incorporating an external master clock, a dedicated 25MHz input allows the internal clock source to be bypassed using the appropriate clock selection control.

The Z1 Plus also incorporates high-frequency filtering at its power input and USB audio output, along with electromagnetic interference absorption around internal components. Its NVMe SSD features dedicated power regulation and additional EMI treatment.

A fanless cooling system combines graphene material, a copper heatsink and the aluminum chassis to dissipate heat without introducing mechanical fan noise. These measures are intended to reduce electrical and mechanical interference within the server.



 

Technical Specifications

Specification

Details

Manufacturer

Silent Angel

Model

Rhein Z1 Plus

Product type

High-performance audiophile music server

Processor

Intel J6413 quad-core

Memory

16GB or 32GB DDR4

Internal storage

4TB NVMe SSD

Operating system

Silent Angel VitOS

Network connectivity

2 × Gigabit Ethernet

Ethernet clocking

Independent 25MHz TCXO clocks

External master clock

25MHz input

Maximum PCM resolution

32-bit/768kHz

Maximum DSD playback

DSD512

Roon DSP transcoding

Up to DSD256

Simultaneous audio players

Up to 10

USB audio output

1

USB expansion

2 × USB 3.1, 1 × USB 2.0

USB-C

1 × USB Type-C

Chassis

6061 aluminum alloy

Cooling

Fanless, graphene-assisted cooling with copper heatsink

External power

12V / 3A

Power connector

5.5 × 2.5mm

Dimensions

7.87" W × 2.56" H × 7.87" D

Weight

7.94 lbs

Available finishes

Black or silver



A Flexible Digital Source for Reference Audio Systems

The Rhein Z1 Plus can be configured to suit several digital audio architectures. Connect it directly to a compatible USB DAC for high-resolution playback, use it as a Roon Server to manage a music library, or deploy it as a dedicated network audio transport.

Its dual Ethernet architecture also makes it suitable for systems incorporating audiophile network switches and other specialized networking equipment.

For users seeking additional clocking options, the 25MHz external master clock input provides a path for integrating compatible precision clock components.

Silent Angel at The Grid HiFi

The Grid HiFi in Houston, Texas, specializes in reference two-channel audio, high-resolution music streaming and professionally integrated digital playback systems.

Our team can help configure the Silent Angel Rhein Z1 Plus for your preferred streaming platform, integrate it with a compatible DAC and select appropriate networking equipment for your listening room. Whether you're building a new reference system or upgrading an existing digital source, The Grid provides personalized equipment selection and system integration.

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FAQs

Please read our FAQs page to find out more.

Do you price match?

Yes. We match any authorised dealer, including big-box retailers. If you find the same product at a lower price, contact us and we'll match it.

Do you offer free shipping?

Yes — free shipping on every order, with 2-day delivery available on most products. Easy returns and exchanges are included.

Where is your showroom?

We're at 6362 Alder Drive, Houston, Texas. The showroom lets you hear and compare reference-level systems in person before making any decisions. If you're considering a larger purchase or installation, it's well worth the visit.

Can I buy online without visiting the showroom?

Yes. The full product range is available through the online store with free nationwide shipping. For more complex system builds, speaking with one of our advisers first tends to lead to a better result.

Do you offer financing?

Yes. Special financing is available through the BrandSource Credit Card for qualifying purchases, allowing you to spread payments over time with no annual fee. Promotional rebate savings are also available periodically. See the financing page for full details.

Do you install systems as well as sell equipment?

Yes — installation is central to what we do. We design and install whole-home audio and video, home theaters, media rooms, outdoor audio, lighting and motorised shades, and full smart home automation.

Do you provide support after installation?

Yes. We provide ongoing service and support to ensure systems continue performing as intended — not just on installation day, but over the long term.