The TRN Azure Dragon is 32Ω at 108.0 dB (no reference unit printed); the TRN Conch is 30Ω at 114.0 dB (no reference unit printed). This page covers what they ask of an amplifier, not how they sound.
The Azure Dragon needs 6.0 dB more than the Conch to reach the same loudness — 0.16 mW against 0.04 mW.
| Specification | Azure Dragon | Conch |
|---|---|---|
| Impedance | 32 Ω | 30 Ω |
| Sensitivity | 108.0 dB | 114.0 dB |
| Sensitivity (voltage) | 122.9 dB/V | 129.2 dB/V |
| Power for 100 dB | 0.16 mW | 0.04 mW |
| Voltage for 100 dB | 71 mV | 35 mV |
| Current for 100 dB | 2.2 mA | 1.2 mA |
| Highest source impedance that leaves them alone (one-eighth rule) | 4.00 Ω | 3.75 Ω |
| Sources that reach 100 dB out of 280 | 280 | 280 |
One caution before reading the rows. TRN Azure Dragon and TRN Conch 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.
18 sources stay below the audible-hiss threshold with the Azure Dragon but cross it with the Conch (Fosi Audio SK02, Lake People G103-S Mk II, Schiit Valhalla 3, 15 more).
280 of the 280 sources here reach 100 dB on both.
The Azure Dragon is more demanding than 23% of the 567 non-electrostatic models in this database; the Conch than 4%.
| dB SPL | Azure Dragon power | Azure Dragon voltage | Conch power | Conch voltage |
|---|---|---|---|---|
| 80 | 1.6 µW | 7 mV | 0.4 µW | 3 mV |
| 85 | 5.0 µW | 13 mV | 1.3 µW | 6 mV |
| 90 | 0.02 mW | 23 mV | 4.0 µW | 11 mV |
| 95 | 0.05 mW | 40 mV | 0.01 mW | 19 mV |
| 100 | 0.16 mW | 71 mV | 0.04 mW | 35 mV |
| 105 | 0.50 mW | 0.13 V | 0.13 mW | 61 mV |
| Source | Price | Headroom, Azure Dragon | Headroom, Conch | Output impedance | Noise |
|---|---|---|---|---|---|
| JadeAudio JA11 | $20 | 22.8 dB | 28.5 dB | 0.5 Ω | 1.7 µV |
| FiiO KA11 | $29 | 31.0 dB | 37.1 dB | 0.7 Ω | 1.7 µV |
| FiiO BTR13 | $59 | 28.0 dB | 34.0 dB | 0.6 Ω | 1.0 µV |
Of the 280 sources here, 280 reach 100 dB on both. 51 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 51 is the JadeAudio JA11, at $20. It leaves 22.8 dB of headroom on the Azure Dragon and 28.5 dB on the Conch, its output impedance is 0.5 Ω against a one-eighth limit of 4.00 Ω and 3.75 Ω, and its noise figure puts the hiss floor 12 dB and 6 dB below the 20 dB SPL this site treats as the point where a quiet room stops hiding it.
| Model | As printed | Tolerance | Standard |
|---|---|---|---|
| Azure Dragon | 7Hz-40KHz | not printed | not printed |
| Conch | 20Hz-20000Hz | not printed | not printed |
TRN prints 7Hz-40KHz for the Azure Dragon and 20Hz-20000Hz for the Conch.
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: TRN Azure Dragon and TRN Conch. Each figure on this page is labelled on those pages with where it came from, including the ones TRN never published — what that maker publishes, counted.