HifiZine
The enthusiast's audio webzine

Technical and DIY

Articles that explain or educate readers on one or more technical aspects of the hobby. Technical articles from industry members are welcomed, as are those by any audiophile who has completed an audio project build.

Editor: John Reekie.

Roon Server on ODroid H2

John Reekie tests out the ODroid H2 SBC (single board computer) as a Roon Server. “Ever since I discovered how easy it is to set up a DLNA music server on a Raspberry Pi or an ODroid HC1, I’ve been reluctant to dedicate a ‘proper’ computer as a music server,” he writes, to explain the appeal of this inexpensive x86 computer. After walking through the install, he runs some UI tests.

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How to stream Qobuz to almost anything

John Reekie decides it’s time to branch out from the Raspberry Pi and start streaming to a greater variety of devices. He summarizes the architecture that enables Qobuz to stream to “almost anything” and how to set it up. As a bonus, he provides installation instructions to turn any Linux SBC into a compatible audio player.

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RME ADI-2 Pro : Modes and Audio Routing

John Reekie takes a deep dive into the “modes” of the RME ADI-2 Pro. “The modes can be considered as a sort of shorthand that gets you close to a solution, which you can then tailor by adjusting parameters away from the default or automatic selections.” He provides diagrams that illustrate the signal routing through the ADI-2 Pro in each mode, and also discusses clocking.

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Syncing a music library to a Droidisk (or PiDisk)

John Reekie goes all GUI to sync up his droidisk server with music files on a Mac or PC. Well, apart from installation on the ODroid or Raspberry Pi. Compared to his previous rsync-based method, this is “a better solution that is cross-platform, easier to set up, and more flexible.”

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RME ADI-2 Pro : a Technical Overview

“I recently found myself intrigued by an interface from the pro-sound world, the RME ADI-2 Pro,” writes John Reekie. This line-level convertor and audio interface is billed as RME’s “reference” A/D and D/A convertor, but also has a solid complement of onboard processing, two powerful headphone amps, and technical performance good enough for use as a measurement front end.

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Droidisk – Playing music

John Reekie wraps up his articles on inexpensive SBC-based music servers, with instructions on how to install music-related services on the ODroid HC1. This time, he’s also using an Android tablet as the renderer.

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Droidisk – An inexpensive compact music server

John Reekie revisits his Raspberry Pi based music server with a new offering: the ODroid HC1 (“home compute server”). “The HC1 has the distinguishing feature of a SATA port, so that it connects to a hard drive without going through USB. It also has a Gigabit Ethernet port and a much faster processor than the Pi.” Get ready to sharpen your command line skills!

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PiDisk – syncing the music library

More command-line fu, this time mostly on your Mac instead of the Raspberry Pi. The purpose? To create a robust solution for synchronizing your music library (or libraries) on your Mac over to the PiDIsk. John Reekie walks you through it step by step and concludes the series: “All in all, I’m very pleased with this playback ‘ecosystem’… you don’t have to spend much to get started.”

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PiDisk – adding the music services

Files are one thing, but music is another. To make the PiDisk music-aware, John Reekie adds two services to it. MinimServer gives UPnP clients a “music aware” view of the files, while BubbleUPnP turns the player into an “OpenHome renderer.” Meaning? TIDAL too.

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PiDisk – an inexpensive Raspberry Pi music server

John Reekie continues his journey into the Land of Pi by setting up a second Pi dedicated as a music server. Pi, case, power supply and a portable hard drive. He goes “command line” on this one, but provides step by step instructions all the way. This article, the first in a series of three, provides the foundation by setting up the Pi as a file share.

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