The Moondrop Blessing 2 Dusk is 22Ω at 106.0 dB (no figure from the maker at all); the Moondrop HARMON is 19Ω at 96.8 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 HARMON needs 9.2 dB more than the Blessing 2 Dusk to reach the same loudness — 2.1 mW against 0.25 mW.
| Specification | Blessing 2 Dusk | HARMON |
|---|---|---|
| Impedance | 22 Ω | 19 Ω |
| Sensitivity | 106.0 dB | 96.8 dB/mW |
| Sensitivity (voltage) | 122.6 dB/V | 114.0 dB/V |
| Power for 100 dB | 0.25 mW | 2.1 mW |
| Voltage for 100 dB | 74 mV | 0.20 V |
| Current for 100 dB | 3.4 mA | 10.5 mA |
| Highest source impedance that leaves them alone (one-eighth rule) | 2.75 Ω | 2.38 Ω |
| Sources that reach 100 dB out of 280 | 280 | 280 |
One caution before reading the rows. For Moondrop Blessing 2 Dusk the maker publishes no sensitivity figure at all. The number in the table was collected when this database was first built and has never been traced to a manufacturer document, so treat every row below it as an estimate rather than a specification.
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.
2 sources stay below the audible-hiss threshold with the HARMON but cross it with the Blessing 2 Dusk (FiiO BTR11, Rupert Neve RNHP).
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: Moondrop Blessing 2 Dusk and Moondrop HARMON. Each figure on this page is labelled on those pages with where it came from, including the ones Moondrop never published — what that maker publishes, counted.