The Letshuoer Cadenza12 is 16Ω at 110.0 dB/mW; the Letshuoer DZ4 is 12Ω at 104.0 dB/mW. This page covers what they ask of an amplifier, not how they sound.
The DZ4 needs 6.0 dB more than the Cadenza12 to reach the same loudness — 0.40 mW against 0.10 mW.
| Specification | Cadenza12 | DZ4 |
|---|---|---|
| Impedance | 16 Ω | 12 Ω |
| Sensitivity | 110.0 dB/mW | 104.0 dB/mW |
| Sensitivity (voltage) | 128.0 dB/V | 123.2 dB/V |
| Power for 100 dB | 0.10 mW | 0.40 mW |
| Voltage for 100 dB | 40 mV | 69 mV |
| Current for 100 dB | 2.5 mA | 5.8 mA |
| Highest source impedance that leaves them alone (one-eighth rule) | 2.00 Ω | 1.50 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.
5 sources are low enough in output impedance for the Cadenza12 under the one-eighth rule but not for the DZ4 (FiiO KA13, Schiit Vali 2+, Astell&Kern HC3, 2 more).
13 sources stay below the audible-hiss threshold with the DZ4 but cross it with the Cadenza12 (Lake People G103-S Mk II, Schiit Valhalla 3, Lake People G111 Mk II, 10 more).
280 of the 280 sources here reach 100 dB on both.
The DZ4 is more demanding than 20% of the 567 non-electrostatic models in this database; the Cadenza12 than 7%.
| dB SPL | Cadenza12 power | Cadenza12 voltage | DZ4 power | DZ4 voltage |
|---|---|---|---|---|
| 80 | 1.0 µW | 4 mV | 4.0 µW | 7 mV |
| 85 | 3.2 µW | 7 mV | 0.01 mW | 12 mV |
| 90 | 0.01 mW | 13 mV | 0.04 mW | 22 mV |
| 95 | 0.03 mW | 22 mV | 0.13 mW | 39 mV |
| 100 | 0.10 mW | 40 mV | 0.40 mW | 69 mV |
| 105 | 0.32 mW | 71 mV | 1.3 mW | 0.12 V |
| Source | Price | Headroom, Cadenza12 | Headroom, DZ4 | Output impedance | Noise |
|---|---|---|---|---|---|
| JadeAudio JA11 | $20 | 21.8 dB | 14.5 dB | 0.5 Ω | 1.7 µV |
| FiiO KA11 | $29 | 33.9 dB | 26.6 dB | 0.7 Ω | 1.7 µV |
| FiiO BTR13 | $59 | 30.8 dB | 23.5 dB | 0.6 Ω | 1.0 µV |
Of the 280 sources here, 280 reach 100 dB on both. 54 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 54 is the JadeAudio JA11, at $20. It leaves 21.8 dB of headroom on the Cadenza12 and 14.5 dB on the DZ4, its output impedance is 0.5 Ω against a one-eighth limit of 2.00 Ω and 1.50 Ω, and its noise figure puts the hiss floor 7 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 |
|---|---|---|---|
| Cadenza12 | nothing printed | — | — |
| DZ4 | nothing printed | — | — |
Letshuoer prints the same thing for both the Cadenza12 and the DZ4: nothing at all.
There is nothing here to compare, and that is worth saying plainly rather than filling the gap with somebody else’s measurement. Of the 578 models checked against a maker document so far, 490 carry a printed range and only 58 of those print the ±dB tolerance that would make a range mean anything.
Not a measurement; maker by maker.
Both have a page of their own. In full: Letshuoer Cadenza12 and Letshuoer DZ4. Every figure on this page comes from what Letshuoer published, or is derived from it — what that maker publishes, counted.