For people and software

Knowledge you can inspect.

Public, versioned JSON snapshots: 54 models, 6 historical milestones and 5 technology terms.

Available now: static JSON files.

These are downloadable snapshots, not a live query API. No paid API, MCP server or machine-payment service is active.

Read the data

One model, one stable identifier

Read the LCD-X JSON record or open its human-readable profile.

GET /data/v1/models/audeze-lcd-x.json

Understand the contract

Every field carries a value, an evidence status and source references. Unknown is not zero or false.
Profile-level provenance is explicitly distinguished from newer field-level source reviews.
Single-variant impedance can be queried as impedanceOhms. Multi-variant values remain unflattened and their numeric field is unknown.
Graph relationships distinguish technical evidence from editorial use-case guidance. Chronological neighbours are not causal predecessors.
Image rights and third-party source rights are separate from access to the data. No blanket license to republish source assets is granted.

Filter locally

Example JavaScript for a client on this site: select documented open-back models above 100 ohms. The filtering happens in your client.

const { records } = await fetch('/data/v1/headphones.json').then(r => r.json());
const matches = records.filter(({ fields: f }) =>
  f.design.value === 'open-back' &&
  f.impedanceOhms.status === 'documented' &&
  f.impedanceOhms.value > 100
);

Data gaps, model-generation mappings and additional historical periods are still being researched. Review dates describe source checks, not a freshness guarantee.

Read our evidence policy →