The Dunu DN-142 is 37Ω at 107.0 dB/mW; the Dunu KIMA 2 is 20Ω at 108.0 dB/mW. This page covers what they ask of an amplifier, not how they sound.
The DN-142 needs 1.0 dB more than the KIMA 2 to reach the same loudness — 0.20 mW against 0.16 mW.
| Specification | DN-142 | KIMA 2 |
|---|---|---|
| Impedance | 37 Ω | 20 Ω |
| Sensitivity | 107.0 dB/mW | 108.0 dB/mW |
| Sensitivity (voltage) | 121.3 dB/V | 125.0 dB/V |
| Power for 100 dB | 0.20 mW | 0.16 mW |
| Voltage for 100 dB | 86 mV | 56 mV |
| Current for 100 dB | 2.3 mA | 2.8 mA |
| Highest source impedance that leaves them alone (one-eighth rule) | 4.62 Ω | 2.50 Ω |
| Sources that reach 100 dB out of 280 | 280 | 280 |
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.
9 sources stay below the audible-hiss threshold with the DN-142 but cross it with the KIMA 2 (FiiO BTR11, FiiO K11 R2R, Lake People G103-S Mk II, 6 more).
280 of the 280 sources here reach 100 dB on both.
The DN-142 is more demanding than 26% of the 567 non-electrostatic models in this database; the KIMA 2 than 14%.
| dB SPL | DN-142 power | DN-142 voltage | KIMA 2 power | KIMA 2 voltage |
|---|---|---|---|---|
| 80 | 2.0 µW | 9 mV | 1.6 µW | 6 mV |
| 85 | 6.3 µW | 15 mV | 5.0 µW | 10 mV |
| 90 | 0.02 mW | 27 mV | 0.02 mW | 18 mV |
| 95 | 0.06 mW | 48 mV | 0.05 mW | 32 mV |
| 100 | 0.20 mW | 86 mV | 0.16 mW | 56 mV |
| 105 | 0.63 mW | 0.15 V | 0.50 mW | 0.10 V |
| Source | Price | Headroom, DN-142 | Headroom, KIMA 2 | Output impedance | Noise |
|---|---|---|---|---|---|
| JadeAudio JA11 | $20 | 21.1 dB | 20.7 dB | 0.5 Ω | 1.7 µV |
| FiiO KA11 | $29 | 29.4 dB | 31.5 dB | 0.7 Ω | 1.7 µV |
| FiiO BTR13 | $59 | 26.4 dB | 28.4 dB | 0.6 Ω | 1.0 µV |
Of the 280 sources here, 280 reach 100 dB on both. 62 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 62 is the JadeAudio JA11, at $20. It leaves 21.1 dB of headroom on the DN-142 and 20.7 dB on the KIMA 2, its output impedance is 0.5 Ω against a one-eighth limit of 4.62 Ω and 2.50 Ω, and its noise figure puts the hiss floor 14 dB and 10 dB below the 20 dB SPL this site treats as the point where a quiet room stops hiding it.
| Model | As printed | Tolerance | Standard |
|---|---|---|---|
| DN-142 | 5Hz – 40kHz | not printed | not printed |
| KIMA 2 | 5 Hz - 40 kHz | not printed | not printed |
Dunu prints 5Hz – 40kHz for the DN-142 and 5 Hz - 40 kHz for the KIMA 2.
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 DN-142 and Dunu KIMA 2. Every figure on this page comes from what Dunu published, or is derived from it — what that maker publishes, counted.