The Kefine Delci is 28Ω at 108.0 dB (no reference unit printed); the Kefine Klanar is 16Ω at 105.0 dB (no reference unit printed). This page covers what they ask of an amplifier, not how they sound.
The Klanar needs 3.0 dB more than the Delci to reach the same loudness — 0.32 mW against 0.16 mW.
| Specification | Delci | Klanar |
|---|---|---|
| Impedance | 28 Ω | 16 Ω |
| Sensitivity | 108.0 dB | 105.0 dB |
| Sensitivity (voltage) | 123.5 dB/V | 123.0 dB/V |
| Power for 100 dB | 0.16 mW | 0.32 mW |
| Voltage for 100 dB | 67 mV | 71 mV |
| Current for 100 dB | 2.4 mA | 4.4 mA |
| Highest source impedance that leaves them alone (one-eighth rule) | 3.50 Ω | 2.00 Ω |
| Sources that reach 100 dB out of 280 | 280 | 280 |
One caution before reading the rows. Kefine Delci and Kefine Klanar 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.
1 source stays below the audible-hiss threshold with the Klanar but crosses it with the Delci (Lake People G111 Mk II).
280 of the 280 sources here reach 100 dB on both.
The Klanar is more demanding than 22% of the 567 non-electrostatic models in this database; the Delci than 20%.
| dB SPL | Delci power | Delci voltage | Klanar power | Klanar voltage |
|---|---|---|---|---|
| 80 | 1.6 µW | 7 mV | 3.2 µW | 7 mV |
| 85 | 5.0 µW | 12 mV | 0.01 mW | 13 mV |
| 90 | 0.02 mW | 21 mV | 0.03 mW | 22 mV |
| 95 | 0.05 mW | 37 mV | 0.10 mW | 40 mV |
| 100 | 0.16 mW | 67 mV | 0.32 mW | 71 mV |
| 105 | 0.50 mW | 0.12 V | 1.0 mW | 0.13 V |
| Source | Price | Headroom, Delci | Headroom, Klanar | Output impedance | Noise |
|---|---|---|---|---|---|
| JadeAudio JA11 | $20 | 22.2 dB | 16.8 dB | 0.5 Ω | 1.7 µV |
| FiiO KA11 | $29 | 31.1 dB | 28.9 dB | 0.7 Ω | 1.7 µV |
| FiiO BTR13 | $59 | 28.1 dB | 25.8 dB | 0.6 Ω | 1.0 µV |
Of the 280 sources here, 280 reach 100 dB on both. 65 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 65 is the JadeAudio JA11, at $20. It leaves 22.2 dB of headroom on the Delci and 16.8 dB on the Klanar, its output impedance is 0.5 Ω against a one-eighth limit of 3.50 Ω and 2.00 Ω, and its noise figure puts the hiss floor 12 dB and 12 dB below the 20 dB SPL this site treats as the point where a quiet room stops hiding it.
| Model | As printed | Tolerance | Standard |
|---|---|---|---|
| Delci | 20 Hz - 20 kHz | not printed | not printed |
| Klanar | 20 Hz - 40K Hz | not printed | not printed |
Linsoul, a Chinese-audio retailer lists 20 Hz - 20 kHz for the Delci and 20 Hz - 40K Hz for the Klanar. Both of those figures stand on a shop page rather than a document published by the maker.
Delci: The range sits in the "Technical Details" block with no row label of its own.
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: Kefine Delci and Kefine Klanar. Each figure on this page is labelled on those pages with where it came from, including the ones Kefine never published — what that maker publishes, counted.