The Tangzu The King Wukong is 22Ω at 112.0 dB (no reference unit printed); the Tangzu Xuan Nv is 8.5Ω at 98.0 dB (no reference unit printed). This page covers what they ask of an amplifier, not how they sound.
The Xuan Nv needs 14.0 dB more than the The King Wukong to reach the same loudness — 1.6 mW against 0.06 mW.
| Specification | The King Wukong | Xuan Nv |
|---|---|---|
| Impedance | 22 Ω | 8.5 Ω |
| Sensitivity | 112.0 dB | 98.0 dB |
| Sensitivity (voltage) | 128.6 dB/V | 118.7 dB/V |
| Power for 100 dB | 0.06 mW | 1.6 mW |
| Voltage for 100 dB | 37 mV | 0.12 V |
| Current for 100 dB | 1.7 mA | 13.7 mA |
| Highest source impedance that leaves them alone (one-eighth rule) | 2.75 Ω | 1.06 Ω |
| Sources that reach 100 dB out of 280 | 280 | 280 |
One caution before reading the rows. Tangzu The King Wukong and Tangzu Xuan Nv printed a decibel figure with no reference unit, so this page reads it as per milliwatt. If it is really per volt, each of them needs far more than the table says. Why the two readings differ by so much.
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.
12 sources are low enough in output impedance for the The King Wukong under the one-eighth rule but not for the Xuan Nv (FiiO KA13, FiiO K11, Schiit Vali 2+, 9 more).
18 sources stay below the audible-hiss threshold with the Xuan Nv but cross it with the The King Wukong (FiiO BTR11, FiiO K11 R2R, Lake People G103-S Mk II, 15 more).
280 of the 280 sources here reach 100 dB on both.
The Xuan Nv is more demanding than 38% of the 567 non-electrostatic models in this database; the The King Wukong than 5%.
| dB SPL | The King Wukong power | The King Wukong voltage | Xuan Nv power | Xuan Nv voltage |
|---|---|---|---|---|
| 80 | 0.6 µW | 4 mV | 0.02 mW | 12 mV |
| 85 | 2.0 µW | 7 mV | 0.05 mW | 21 mV |
| 90 | 6.3 µW | 12 mV | 0.16 mW | 37 mV |
| 95 | 0.02 mW | 21 mV | 0.50 mW | 65 mV |
| 100 | 0.06 mW | 37 mV | 1.6 mW | 0.12 V |
| 105 | 0.20 mW | 66 mV | 5.0 mW | 0.21 V |
| Source | Price | Headroom, The King Wukong | Headroom, Xuan Nv | Output impedance | Noise |
|---|---|---|---|---|---|
| JadeAudio JA11 | $20 | 25.1 dB | 7.0 dB | 0.5 Ω | 1.7 µV |
| FiiO KA11 | $29 | 35.4 dB | 19.1 dB | 0.7 Ω | 1.7 µV |
| FiiO BTR13 | $59 | 32.3 dB | 16.0 dB | 0.6 Ω | 1.0 µV |
Of the 280 sources here, 280 reach 100 dB on both. 46 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 46 is the JadeAudio JA11, at $20. It leaves 25.1 dB of headroom on the The King Wukong and 7.0 dB on the Xuan Nv, its output impedance is 0.5 Ω against a one-eighth limit of 2.75 Ω and 1.06 Ω, and its noise figure puts the hiss floor 7 dB and 17 dB below the 20 dB SPL this site treats as the point where a quiet room stops hiding it.
| Model | As printed | Tolerance | Standard |
|---|---|---|---|
| The King Wukong | 20Hz-20kHz | not printed | not printed |
| Xuan Nv | 7Hz-20kHz | not printed | not printed |
Tangzu prints 20Hz-20kHz for the The King Wukong and 7Hz-20kHz for the Xuan Nv.
Neither range has a tolerance printed beside it, so a wider range on one sheet is not deeper bass or more treble.
Not a measurement; maker by maker.
Both have a page of their own. In full: Tangzu The King Wukong and Tangzu Xuan Nv. Each figure on this page is labelled on those pages with where it came from, including the ones Tangzu never published — what that maker publishes, counted.