Upsample your music in advance, play it from RAM

What it looks like

One interface in the browser: on the computer, on an iPad or on an iPhone. The screenshots show the German interface; English is one switch away under Setup.

One track after another

You pick an album, the Upsampler computes track by track and shows progress and remaining time. Every finished track is on the RAM disk right away.

To suit your DAC

DSD64 to DSD512 or PCM up to 32fS, four reconstruction filters, level and gapless albums. Set once, it applies to all devices.

The RAM disk at a glance

You see how full it is and which albums are on it. After a restart you bring them back from the archive in seconds.

How much memory do I need?

Two things take up memory, and they differ a lot in size. The figures are for DSD128.

In total you need the RAM disk, plus the computing memory for your longest track, plus what the system itself needs. With 32 GB you are on the safe side. With 16 GB it works with a RAM disk of about 6 GB.

Getting started

1. Unpack. Double-click the ZIP file and drag Upsampler.app into the Applications folder.
2. First launch. The app is not registered with Apple, so macOS blocks the first start. Open System Settings → Privacy & Security and click Open Anyway next to “Upsampler” at the bottom. You only need this once.
3. Interface. The browser opens by itself at http://localhost:8484/. If macOS asks about incoming connections, allow them if you want to operate from an iPad or iPhone.
4. Set up. In the Setup tab enter the music folders and the target. Switch the language to English there, if the page did not do it already.
5. Roon. Add the target folder as a music folder. The first 14 days everything runs without a key.

1. Unpack. Extract the ZIP file to C:\Upsampler.
2. Start. Double-click Upsampler starten.bat. The black window stays open while you use the Upsampler. If Windows says “Windows protected your PC”, click More info and then Run anyway. In the firewall dialog allow private networks only.
3. Open the interface. Open http://localhost:8484/ in the browser. From an iPad or iPhone use the computer's IP, e.g. http://192.168.1.20:8484/.
4. Set up. In the Setup tab enter your music folders and the target. The target is best a RAM disk; the manual shows how to create one. Switch the language to English there, if the page did not do it already.
5. Roon. Add the target folder as a music folder. The first 14 days everything runs without a key.

1. Unpack. tar xzf Upsampler-Linux.tar.gz (PC) or tar xzf Upsampler-Linux-ARM64.tar.gz (ARM), in your home directory for example. This creates the folder Upsampler.
2. Start. In a terminal: sh Upsampler/upsampler-starten.sh. Keep the window open while you use the Upsampler. You can pass music folders and the target right away with --library and --output.
3. Open the interface. In the browser go to http://localhost:8484/. From an iPad or iPhone use the computer's IP, such as http://192.168.1.20:8484/. A firewall must let port 8484 through on the home network.
4. Set up. In the Setup tab enter your music folders and the target. A RAM drive (tmpfs) such as /dev/shm makes a good target; the setup shows which ones exist.
5. Roon. Add the target folder as a music folder. The first 14 days everything runs without a key.

Buy the full version

If you like the Upsampler after the trial, you get an unlimited key for your computer. The computer ID is in the Setup tab under Licence.

Manuals

Both are in German for now; they are also in the packages as PDF. An English manual will follow if there is demand.