Blessing 2 Dusk vs DARKSABER: which needs more amplifier?

The Moondrop Blessing 2 Dusk is 22Ω at 106.0 dB (no figure from the maker at all); the Moondrop DARKSABER is 22Ω at 111.4 dB/mW. This page covers what they ask of an amplifier, not how they sound.

The Blessing 2 Dusk needs 5.4 dB more than the DARKSABER to reach the same loudness — 0.25 mW against 0.07 mW.

The numbers that decide it

SpecificationBlessing 2 DuskDARKSABER
Impedance22 Ω22 Ω
Sensitivity106.0 dB111.4 dB/mW
Sensitivity (voltage)122.6 dB/V128.0 dB/V
Power for 100 dB0.25 mW0.07 mW
Voltage for 100 dB74 mV40 mV
Current for 100 dB3.4 mA1.8 mA
Highest source impedance
that leaves them alone (one-eighth rule)
2.75 Ω2.75 Ω
Sources that reach 100 dB
out of 280
280280

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.

Where the two part company

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.

14 sources stay below the audible-hiss threshold with the Blessing 2 Dusk but cross it with the DARKSABER (FiiO K11 R2R, Lake People G103-S Mk II, Schiit Valhalla 3, 11 more).

280 of the 280 sources here reach 100 dB on both.

What each one needs from 80 to 105 dB

The Blessing 2 Dusk is more demanding than 23% of the 567 non-electrostatic models in this database; the DARKSABER than 6%.

dB SPLBlessing 2 Dusk powerBlessing 2 Dusk voltageDARKSABER powerDARKSABER voltage
802.5 µW7 mV0.7 µW4 mV
857.9 µW13 mV2.3 µW7 mV
900.03 mW24 mV7.2 µW13 mV
950.08 mW42 mV0.02 mW22 mV
1000.25 mW74 mV0.07 mW40 mV
1050.79 mW0.13 V0.23 mW71 mV

The cheapest source that satisfies both

SourcePriceHeadroom, Blessing 2 DuskHeadroom, DARKSABEROutput impedanceNoise
JadeAudio JA11$2019.1 dB24.5 dB0.5 Ω1.7 µV
FiiO KA11$2929.4 dB34.8 dB0.7 Ω1.7 µV
FiiO BTR13$5926.3 dB31.7 dB0.6 Ω1.0 µV

Of the 280 sources here, 280 reach 100 dB on both. 55 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 55 is the JadeAudio JA11, at $20. It leaves 19.1 dB of headroom on the Blessing 2 Dusk and 24.5 dB on the DARKSABER, its output impedance is 0.5 Ω against a one-eighth limit of 2.75 Ω for both, and its noise figure puts the hiss floor 13 dB and 7 dB below the 20 dB SPL this site treats as the point where a quiet room stops hiding it.

Try any other source.

Both pages in full

Both have a page of their own. In full: Moondrop Blessing 2 Dusk and Moondrop DARKSABER. 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.

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