The Dunu DN-142 is 37Ω at 107.0 dB/mW; the Dunu Glacier is 43Ω at 109.0 dB/mW. This page covers what they ask of an amplifier, not how they sound.
The DN-142 needs 2.0 dB more than the Glacier to reach the same loudness — 0.20 mW against 0.13 mW.
| Specification | DN-142 | Glacier |
|---|---|---|
| Impedance | 37 Ω | 43 Ω |
| Sensitivity | 107.0 dB/mW | 109.0 dB/mW |
| Sensitivity (voltage) | 121.3 dB/V | 122.7 dB/V |
| Power for 100 dB | 0.20 mW | 0.13 mW |
| Voltage for 100 dB | 86 mV | 74 mV |
| Current for 100 dB | 2.3 mA | 1.7 mA |
| Highest source impedance that leaves them alone (one-eighth rule) | 4.62 Ω | 5.38 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.
1 source is low enough in output impedance for the Glacier under the one-eighth rule but not for the DN-142 (Shanling H5).
2 sources stay below the audible-hiss threshold with the DN-142 but cross it with the Glacier (FiiO BTR11, Rupert Neve RNHP).
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 Glacier than 23%.
| dB SPL | DN-142 power | DN-142 voltage | Glacier power | Glacier voltage |
|---|---|---|---|---|
| 80 | 2.0 µW | 9 mV | 1.3 µW | 7 mV |
| 85 | 6.3 µW | 15 mV | 4.0 µW | 13 mV |
| 90 | 0.02 mW | 27 mV | 0.01 mW | 23 mV |
| 95 | 0.06 mW | 48 mV | 0.04 mW | 41 mV |
| 100 | 0.20 mW | 86 mV | 0.13 mW | 74 mV |
| 105 | 0.63 mW | 0.15 V | 0.40 mW | 0.13 V |
| Source | Price | Headroom, DN-142 | Headroom, Glacier | Output impedance | Noise |
|---|---|---|---|---|---|
| JadeAudio JA11 | $20 | 21.1 dB | 22.5 dB | 0.5 Ω | 1.7 µV |
| FiiO KA11 | $29 | 29.4 dB | 30.7 dB | 0.7 Ω | 1.7 µV |
| FiiO BTR13 | $59 | 26.4 dB | 27.7 dB | 0.6 Ω | 1.0 µV |
Of the 280 sources here, 280 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 JadeAudio JA11, at $20. It leaves 21.1 dB of headroom on the DN-142 and 22.5 dB on the Glacier, its output impedance is 0.5 Ω against a one-eighth limit of 4.62 Ω and 5.38 Ω, and its noise figure puts the hiss floor 14 dB and 13 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 |
| Glacier | 5 Hz - 40 kHz | not printed | not printed |
Dunu prints 5Hz – 40kHz for the DN-142 and 5 Hz - 40 kHz for the Glacier.
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 Glacier. Every figure on this page comes from what Dunu published, or is derived from it — what that maker publishes, counted.