The Moondrop Blessing 3 Dusk is 14.5Ω at 100.6 dB/mW; the Moondrop SOLIS II is 10Ω at 101.0 dB/mW. This page covers what they ask of an amplifier, not how they sound.
In amplifier terms these two are the same headphone. The gap between what they need for 100 dB is under half a decibel, which is smaller than the step between two clicks of most volume controls.
| Specification | Blessing 3 Dusk | SOLIS II |
|---|---|---|
| Impedance | 14.5 Ω | 10 Ω |
| Sensitivity | 100.6 dB/mW | 101.0 dB/mW |
| Sensitivity (voltage) | 119.0 dB/V | 121.0 dB/V |
| Power for 100 dB | 0.87 mW | 0.79 mW |
| Voltage for 100 dB | 0.11 V | 89 mV |
| Current for 100 dB | 7.8 mA | 8.9 mA |
| Highest source impedance that leaves them alone (one-eighth rule) | 1.81 Ω | 1.25 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.
5 sources are low enough in output impedance for the Blessing 3 Dusk under the one-eighth rule but not for the SOLIS II (FiiO KA13, Schiit Vali 2+, FiiO M11S, 2 more).
280 of the 280 sources here reach 100 dB on both.
The Blessing 3 Dusk is more demanding than 37% of the 567 non-electrostatic models in this database; the SOLIS II than 28%.
| dB SPL | Blessing 3 Dusk power | Blessing 3 Dusk voltage | SOLIS II power | SOLIS II voltage |
|---|---|---|---|---|
| 80 | 8.7 µW | 11 mV | 7.9 µW | 9 mV |
| 85 | 0.03 mW | 20 mV | 0.03 mW | 16 mV |
| 90 | 0.09 mW | 36 mV | 0.08 mW | 28 mV |
| 95 | 0.28 mW | 63 mV | 0.25 mW | 50 mV |
| 100 | 0.87 mW | 0.11 V | 0.79 mW | 89 mV |
| 105 | 2.8 mW | 0.20 V | 2.5 mW | 0.16 V |
| Source | Price | Headroom, Blessing 3 Dusk | Headroom, SOLIS II | Output impedance | Noise |
|---|---|---|---|---|---|
| JadeAudio JA11 | $20 | 11.9 dB | 10.7 dB | 0.5 Ω | 1.7 µV |
| FiiO KA11 | $29 | 24.1 dB | 22.9 dB | 0.7 Ω | 1.7 µV |
| FiiO BTR11 | $36 | 16.7 dB | 15.5 dB | 0.5 Ω | 8.0 µV |
Of the 280 sources here, 280 reach 100 dB on both. 65 of them also publish an output impedance low enough for both under the one-eighth rule and a noise figure that stays below the audible-hiss threshold with both.
The cheapest of the 65 is the JadeAudio JA11, at $20. It leaves 11.9 dB of headroom on the Blessing 3 Dusk and 10.7 dB on the SOLIS II, its output impedance is 0.5 Ω against a one-eighth limit of 1.81 Ω and 1.25 Ω, and its noise figure puts the hiss floor 16 dB and 14 dB below the 20 dB SPL this site treats as the point where a quiet room stops hiding it.
| Model | As printed | Tolerance | Standard |
|---|---|---|---|
| Blessing 3 Dusk | 10Hz- 24kHz | not printed | not printed |
| 20Hz - 20kHz (IEC60318-4, 3dB) | 3 dB | IEC60318-4 | |
| SOLIS II | 7Hz-40kHz | not printed | not printed |
| 20Hz-20kHz (IEC60318-4, 3dB) | 3 dB | IEC60318-4 |
Moondrop prints two ranges, “10Hz- 24kHz” and “20Hz - 20kHz (IEC60318-4, 3dB)”, for the Blessing 3 Dusk and two ranges, “7Hz-40kHz” and “20Hz-20kHz (IEC60318-4, 3dB)”, for the SOLIS II.
Both sheets print a tolerance, which is rare enough to be worth pointing at: only 58 of the 490 models with a printed range do. These two ranges can be set against each other, because each of them says how far down the response is allowed to be at the ends.
Not a measurement; maker by maker.
Both have a page of their own. In full: Moondrop Blessing 3 Dusk and Moondrop SOLIS II. Every figure on this page comes from what Moondrop published, or is derived from it — what that maker publishes, counted.