A free feedback delay and reverb hybrid whose modes are named after astronomical objects, from Gemini and Lyra to Andromeda and the Great Annihilator, ranging from subtle ambience to enormous evolving soundscapes. Widely described as the best free reverb available and an on-ramp to the paid Valhalla line.
Source MusicTech's 'Plug-ins I Actually Use' feature has Michael Diamond naming Supermassive in his own working set, 'capable of making some luscious outer space ambiences'. A second MusicTech interview has composer/producer Cephas Azariah on his essential reverbs: 'On Valhalla's Supermassive - why is this free? There's so much control and a vast depth to what you can do with this delay/reverb plugin.'
A WAVS selection curated for the lane Valhalla Supermassive lives in.
Sounds in this laneFree with no registration and no iLok. Free mode updates continue, with the Sirius mode added recently. Price checked 25 September 2026. macOS through Sequoia. Windows 10 and 11. 64-bit hosts only. CPU load and learning curve summarise published reviews and user forums, not our own testing.
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