The Moondrop JOKER is 68Ω at 94.3 dB/mW; the Moondrop SKYLAND is 60Ω at 83.8 dB/mW. This page covers what they ask of an amplifier, not how they sound.
The SKYLAND needs 10.5 dB more than the JOKER to reach the same loudness — 42 mW against 3.7 mW.
| Specification | JOKER | SKYLAND |
|---|---|---|
| Impedance | 68 Ω | 60 Ω |
| Sensitivity | 94.3 dB/mW | 83.8 dB/mW |
| Sensitivity (voltage) | 106.0 dB/V | 96.0 dB/V |
| Power for 100 dB | 3.7 mW | 42 mW |
| Voltage for 100 dB | 0.50 V | 1.58 V |
| Current for 100 dB | 7.4 mA | 26.4 mA |
| Highest source impedance that leaves them alone (one-eighth rule) | 8.50 Ω | 7.50 Ω |
| Sources that reach 100 dB out of 280 | 280 | 235 |
45 of the 280 sources have the power for the JOKER but not for the SKYLAND — Apple USB-C dongle (US), Apple USB-C dongle (EU), Generic CX31993 dongles, 42 more.
235 of the 280 sources here reach 100 dB on both.
The SKYLAND is more demanding than 99% of the 567 non-electrostatic models in this database; the JOKER than 87%.
| dB SPL | JOKER power | JOKER voltage | SKYLAND power | SKYLAND voltage |
|---|---|---|---|---|
| 80 | 0.04 mW | 50 mV | 0.42 mW | 0.16 V |
| 85 | 0.12 mW | 89 mV | 1.3 mW | 0.28 V |
| 90 | 0.37 mW | 0.16 V | 4.2 mW | 0.50 V |
| 95 | 1.2 mW | 0.28 V | 13 mW | 0.89 V |
| 100 | 3.7 mW | 0.50 V | 42 mW | 1.58 V |
| 105 | 12 mW | 0.89 V | 132 mW | 2.81 V |
| Source | Price | Headroom, JOKER | Headroom, SKYLAND | Output impedance | Noise |
|---|---|---|---|---|---|
| FiiO KA11 | $29 | 14.1 dB | 4.1 dB | 0.7 Ω | 1.7 µV |
| FiiO BTR13 | $59 | 11.0 dB | 1.0 dB | 0.6 Ω | 1.0 µV |
| iBasso DC03 Pro | $69 | 10.9 dB | 1.0 dB | 0.12 Ω | 0.9 µV |
Of the 280 sources here, 235 reach 100 dB on both. 67 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 67 is the FiiO KA11, at $29. It leaves 14.1 dB of headroom on the JOKER and 4.1 dB on the SKYLAND, its output impedance is 0.7 Ω against a one-eighth limit of 8.50 Ω and 7.50 Ω, and its noise figure puts the hiss floor 29 dB and 39 dB below the 20 dB SPL this site treats as the point where a quiet room stops hiding it.
| Model | As printed | Tolerance | Standard |
|---|---|---|---|
| JOKER | 15Hz- 22kHz | not printed | not printed |
| 20Hz-20kHz (IEC60318-4, -3dB) | -3 dB | IEC60318-4 | |
| SKYLAND | 8Hz - 34kHz (IEC61094, FreeField) | not printed | IEC61094 (free field) |
| 20Hz - 20kHz (IEC60318-4, -3dB) | -3 dB | IEC60318-4 |
Moondrop prints two ranges, “15Hz- 22kHz” and “20Hz-20kHz (IEC60318-4, -3dB)”, for the JOKER and two ranges, “8Hz - 34kHz (IEC61094, FreeField)” and “20Hz - 20kHz (IEC60318-4, -3dB)”, for the SKYLAND.
JOKER: The wide range Moondrop prints for the Joker stops at 22 kHz — narrower than the headline range on most of its own models.
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 JOKER and Moondrop SKYLAND. Every figure on this page comes from what Moondrop published, or is derived from it — what that maker publishes, counted.