Categories.
Headphones, amplifiers, accessories — pick a thread.
ULI.AlNiCo.
Eighth-generation driver · The golden age of audio, in a headphone today.
No little upgrades. ULI is built around an AlNiCo magnetic motor system rare in headphone design — the same alloy used in the most musical vintage instruments.
Learn moreGoodSound.
A community effort · We sculpt our future products with the people who listen to them.
Through our community we sculpt our future products. Listening sessions, feedback cycles, and a shared obsession with the details.
Read moreNews.
Tuning notes, design diaries, the occasional rabbit hole.
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Jul 10, 2026ULI: The Pads
How we developed the ULI earpad: materials, geometry, and an interactive model of earpad cavity modes.
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May 8, 2026System Dump Engineering - Associate Power supply
The Story of System Dump Engineering Associate Power Supply.
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Dec 4, 2025Why Ultra Low (Acoustic) Impedance?
Variables that affect hearing can inform headphone design too.
