The Dunu Kima is 32Ω at 108.0 dB (no reference unit printed); the Dunu Vulkan 2 is 35Ω at 113.0 dB/mW. This page covers what they ask of an amplifier, not how they sound.
The Kima needs 5.0 dB more than the Vulkan 2 to reach the same loudness — 0.16 mW against 0.05 mW.
| Specification | Kima | Vulkan 2 |
|---|---|---|
| Impedance | 32 Ω | 35 Ω |
| Sensitivity | 108.0 dB | 113.0 dB/mW |
| Sensitivity (voltage) | 122.9 dB/V | 127.6 dB/V |
| Power for 100 dB | 0.16 mW | 0.05 mW |
| Voltage for 100 dB | 71 mV | 42 mV |
| Current for 100 dB | 2.2 mA | 1.2 mA |
| Highest source impedance that leaves them alone (one-eighth rule) | 4.00 Ω | 4.38 Ω |
| Sources that reach 100 dB out of 280 | 280 | 280 |
One caution before reading the rows. Dunu Kima printed a decibel figure with no reference unit, so this page reads it as per milliwatt. If it is really per volt, that model 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.
13 sources stay below the audible-hiss threshold with the Kima but cross it with the Vulkan 2 (Lake People G103-S Mk II, Schiit Valhalla 3, Lake People G111 Mk II, 10 more).
280 of the 280 sources here reach 100 dB on both.
The Kima is more demanding than 23% of the 567 non-electrostatic models in this database; the Vulkan 2 than 7%.
| dB SPL | Kima power | Kima voltage | Vulkan 2 power | Vulkan 2 voltage |
|---|---|---|---|---|
| 80 | 1.6 µW | 7 mV | 0.5 µW | 4 mV |
| 85 | 5.0 µW | 13 mV | 1.6 µW | 7 mV |
| 90 | 0.02 mW | 23 mV | 5.0 µW | 13 mV |
| 95 | 0.05 mW | 40 mV | 0.02 mW | 24 mV |
| 100 | 0.16 mW | 71 mV | 0.05 mW | 42 mV |
| 105 | 0.50 mW | 0.13 V | 0.16 mW | 74 mV |
| Source | Price | Headroom, Kima | Headroom, Vulkan 2 | Output impedance | Noise |
|---|---|---|---|---|---|
| JadeAudio JA11 | $20 | 22.8 dB | 27.4 dB | 0.5 Ω | 1.7 µV |
| FiiO KA11 | $29 | 31.0 dB | 35.6 dB | 0.7 Ω | 1.7 µV |
| FiiO BTR13 | $59 | 28.0 dB | 32.6 dB | 0.6 Ω | 1.0 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 22.8 dB of headroom on the Kima and 27.4 dB on the Vulkan 2, its output impedance is 0.5 Ω against a one-eighth limit of 4.00 Ω and 4.38 Ω, and its noise figure puts the hiss floor 12 dB and 8 dB below the 20 dB SPL this site treats as the point where a quiet room stops hiding it.
| Model | As printed | Tolerance | Standard |
|---|---|---|---|
| Kima | 5Hz-40kHz | not printed | not printed |
| Vulkan 2 | 5Hz – 40kHz | not printed | not printed |
Dunu prints 5Hz-40kHz for the Kima and 5Hz – 40kHz for the Vulkan 2.
Kima: Printed in the "Technical Info" block; DUNU gives the row no label of its own beyond that heading.
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: Dunu Kima and Dunu Vulkan 2. Each figure on this page is labelled on those pages with where it came from, including the ones Dunu never published — what that maker publishes, counted.