The Dunu DK3001 BD is 26Ω at 108.0 dB/mW; the Dunu Vulkan is 15Ω at 109.0 dB (no reference unit printed). This page covers what they ask of an amplifier, not how they sound.
The DK3001 BD needs 1.0 dB more than the Vulkan to reach the same loudness — 0.16 mW against 0.13 mW.
| Specification | DK3001 BD | Vulkan |
|---|---|---|
| Impedance | 26 Ω | 15 Ω |
| Sensitivity | 108.0 dB/mW | 109.0 dB |
| Sensitivity (voltage) | 123.9 dB/V | 127.2 dB/V |
| Power for 100 dB | 0.16 mW | 0.13 mW |
| Voltage for 100 dB | 64 mV | 43 mV |
| Current for 100 dB | 2.5 mA | 2.9 mA |
| Highest source impedance that leaves them alone (one-eighth rule) | 3.25 Ω | 1.88 Ω |
| Sources that reach 100 dB out of 280 | 280 | 280 |
One caution before reading the rows. Dunu Vulkan 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.
3 sources are low enough in output impedance for the DK3001 BD under the one-eighth rule but not for the Vulkan (Astell&Kern HC3, RME Fireface UFX II, RME Fireface UFX III).
12 sources stay below the audible-hiss threshold with the DK3001 BD but cross it with the Vulkan (Lake People G103-S Mk II, Schiit Valhalla 3, Grace Design m900, 9 more).
280 of the 280 sources here reach 100 dB on both.
The DK3001 BD is more demanding than 19% of the 567 non-electrostatic models in this database; the Vulkan than 8%.
| dB SPL | DK3001 BD power | DK3001 BD voltage | Vulkan power | Vulkan voltage |
|---|---|---|---|---|
| 80 | 1.6 µW | 6 mV | 1.3 µW | 4 mV |
| 85 | 5.0 µW | 11 mV | 4.0 µW | 8 mV |
| 90 | 0.02 mW | 20 mV | 0.01 mW | 14 mV |
| 95 | 0.05 mW | 36 mV | 0.04 mW | 24 mV |
| 100 | 0.16 mW | 64 mV | 0.13 mW | 43 mV |
| 105 | 0.50 mW | 0.11 V | 0.40 mW | 77 mV |
| Source | Price | Headroom, DK3001 BD | Headroom, Vulkan | Output impedance | Noise |
|---|---|---|---|---|---|
| JadeAudio JA11 | $20 | 21.9 dB | 20.5 dB | 0.5 Ω | 1.7 µV |
| FiiO KA11 | $29 | 31.2 dB | 32.6 dB | 0.7 Ω | 1.7 µV |
| FiiO BTR13 | $59 | 28.1 dB | 29.5 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 21.9 dB of headroom on the DK3001 BD and 20.5 dB on the Vulkan, its output impedance is 0.5 Ω against a one-eighth limit of 3.25 Ω and 1.88 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 |
|---|---|---|---|
| DK3001 BD | 5 Hz - 40 kHz | not printed | not printed |
| Vulkan | 5 Hz – 40 kHz (HI-RES Certified) | not printed | not printed |
Dunu prints 5 Hz - 40 kHz for the DK3001 BD and 5 Hz – 40 kHz (HI-RES Certified) for the Vulkan.
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 DK3001 BD and Dunu Vulkan. 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.