This page does not review anything EarStudio makes. It counts one thing: how much of what this database says about their products came out of their own documents, and how much had to be worked out or left blank.
| Product | Into 32Ω | Output impedance | Output noise |
|---|---|---|---|
| EarStudio ES100 MK2 | 60 mW | 0.5 Ω unverified | 3 µV unverified |
Power decides whether it gets loud enough, output impedance decides whether it tilts the response of a multi-driver in-ear, and the noise figure decides whether you hear hiss with sensitive ones. All three fit on one line of a spec sheet; most of the industry prints one of them.
EarStudio publishes a power figure at a stated load on 0 of 1, output impedance on 0, a noise figure on 0. Of the 4 power figures this site displays for them at 32, 150, 300 and 600 Ω: 4 not traceable to any document of theirs. 1 of their entries here predate the sourcing rule and carry figures from independent measurement rather than from a document; those are marked unverified above and counted as unpublished.