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Spherical Sound Society Opera Rotas firmware

Spherical Sound Society active Device launched 2020
drum-machine
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Latest firmware

1.7
released 5 Dec 2021
Download firmware from github.com
Updater
See the update steps below
Manual
User manual (PDF)

What's new in 1.7

when the machine is running and is not in clear/lock/random/mute mode, if you keep pressed the keys from 1 to 8 you get temporary patten variations. Now the OR is always listening to MIDI notes, it means that you can trigger the 8 channels from a midi keyboard even if is not slaved to midi clock.

Last checked 6 Oct 2026

Release notes on raw.githubusercontent.com ↗

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Spherical Sound Society Opera Rotas manual & official pages

How to update the Spherical Sound Society Opera Rotas

1. Open the firmwares folder of the OPERA_ROTAS GitHub repository and open the newest version folder. 2. Download the OperaRotas .hex firmware file (the folder also contains the hid_generic_pc13.bin HID bootloader). 3. Connect the Blue Pill board's USB port to your computer and flash the file following the developer's illustrated guide linked in the folder's readme.txt. Spherical Sound Society also offers an alternate 9-voice polyphonic synth firmware for Opera Rotas.

Just for reference. For complete and up-to-date instructions, always refer to the manufacturer's official firmware page.

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Spherical Sound Society Opera Rotas firmware update history

Changelogs summarised from the manufacturer's release notes.

1.75 Dec 2021

Release notes for this version are listed above.

Release notesopens in a new tab — raw.githubusercontent.com

Tracked in 1 rig on FW//RADAR.

Spherical Sound Society Opera Rotas firmware FAQ

What is the latest firmware for the Spherical Sound Society Opera Rotas?

The latest firmware for the Spherical Sound Society Opera Rotas is version 1.7, released on 5 Dec 2021. FW//RADAR last checked Spherical Sound Society's official page on 6 Oct 2026.

How do I update the Spherical Sound Society Opera Rotas?

1. Open the firmwares folder of the OPERA_ROTAS GitHub repository and open the newest version folder. Full instructions on Spherical Sound Society's official firmware page.

Where can I download Spherical Sound Society Opera Rotas firmware and drivers?

Directly from Spherical Sound Society's official firmware page — FW//RADAR links to the source and never hosts firmware files. Official firmware page →

Where can I find the Spherical Sound Society Opera Rotas manual?

The official Spherical Sound Society user manual is a PDF hosted on raw.githubusercontent.com. Spherical Sound Society Opera Rotas user manual (PDF) →

Is the Spherical Sound Society Opera Rotas still receiving firmware updates?

The last firmware release we recorded is 1.7 from 5 Dec 2021. FW//RADAR still checks Spherical Sound Society's page daily.

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