The Tanchjim NORA is 16Ω at 107.0 dB/mW; the Tanchjim ORIGIN (Lost Manor) is 16Ω at 106.0 dB/mW. This page is only about what they ask of an amplifier — not how they sound, which no specification on either sheet can tell you.
The ORIGIN (Lost Manor) needs 1.0 dB more than the NORA to reach the same loudness — 0.25 mW against 0.20 mW.
| Specification | NORA | ORIGIN (Lost Manor) |
|---|---|---|
| Impedance | 16 Ω | 16 Ω |
| Sensitivity | 107.0 dB/mW | 106.0 dB/mW |
| Sensitivity (voltage) | 125.0 dB/V | 124.0 dB/V |
| Power for 100 dB | 0.20 mW | 0.25 mW |
| Voltage for 100 dB | 57 mV | 63 mV |
| Current for 100 dB | 3.5 mA | 4.0 mA |
| Highest source impedance that leaves them alone (one-eighth rule) | 2.00 Ω | 2.00 Ω |
| Sources that reach 100 dB out of 280 | 280 | 280 |
Every source in the database that drives one of them drives the other. On power, the choice between these two changes nothing about what amplifier you need.
4 sources stay below the audible-hiss threshold with the ORIGIN (Lost Manor) but cross it with the NORA (Lake People G103-S Mk II, RME Babyface Pro FS, Violectric V222, 1 more).
280 of the 280 sources here reach 100 dB on both. That count is about power only — the output-impedance and hiss lines above are separate questions, and a source can pass this one and fail those.
Each model has a page of its own with the full source list, the hiss estimate and the provenance of every figure above: Tanchjim NORA and Tanchjim ORIGIN (Lost Manor). Every figure on this page comes from what Tanchjim published, or is derived from it — what that maker publishes, counted.