The Campfire Audio Andromeda 10 is 8.5Ω at 111.6 dB/mW; the Campfire Audio Andromeda 2020 is 9Ω at 94.0 dB (no figure from the maker at all). This page covers what they ask of an amplifier, not how they sound.
The Andromeda 2020 needs 17.6 dB more than the Andromeda 10 to reach the same loudness — 4.0 mW against 0.07 mW.
| Specification | Andromeda 10 | Andromeda 2020 |
|---|---|---|
| Impedance | 8.5 Ω | 9 Ω |
| Sensitivity | 111.6 dB/mW | 94.0 dB |
| Sensitivity (voltage) | 132.3 dB/V | 114.5 dB/V |
| Power for 100 dB | 0.07 mW | 4.0 mW |
| Voltage for 100 dB | 24 mV | 0.19 V |
| Current for 100 dB | 2.9 mA | 21.0 mA |
| Highest source impedance that leaves them alone (one-eighth rule) | 1.06 Ω | 1.12 Ω |
| Sources that reach 100 dB out of 280 | 280 | 279 |
One caution before reading the rows. For Campfire Audio Andromeda 2020 the maker publishes no sensitivity figure at all. The number in the table was collected when this database was first built and has never been traced to a manufacturer document, so treat every row below it as an estimate rather than a specification.
1 of the 280 sources has the power for the Andromeda 10 but not for the Andromeda 2020 — Steinberg UR22C.
1 source is low enough in output impedance for the Andromeda 2020 under the one-eighth rule but not for the Andromeda 10 (Astell&Kern SR35).
37 sources stay below the audible-hiss threshold with the Andromeda 2020 but cross it with the Andromeda 10 (Kiwi Ears Allegro Mini, FiiO BTR11, FiiO KA13, 34 more).
279 of the 280 sources here reach 100 dB on both.
The Andromeda 2020 is more demanding than 56% of the 567 non-electrostatic models in this database; the Andromeda 10 than 2%.
| dB SPL | Andromeda 10 power | Andromeda 10 voltage | Andromeda 2020 power | Andromeda 2020 voltage |
|---|---|---|---|---|
| 80 | 0.7 µW | 2 mV | 0.04 mW | 19 mV |
| 85 | 2.2 µW | 4 mV | 0.13 mW | 34 mV |
| 90 | 6.9 µW | 8 mV | 0.40 mW | 60 mV |
| 95 | 0.02 mW | 14 mV | 1.3 mW | 0.11 V |
| 100 | 0.07 mW | 24 mV | 4.0 mW | 0.19 V |
| 105 | 0.22 mW | 43 mV | 13 mW | 0.34 V |
| Source | Price | Headroom, Andromeda 10 | Headroom, Andromeda 2020 | Output impedance | Noise |
|---|---|---|---|---|---|
| JadeAudio JA11 | $20 | 20.6 dB | 3.3 dB | 0.5 Ω | 1.7 µV |
| FiiO KA11 | $29 | 32.7 dB | 15.4 dB | 0.7 Ω | 1.7 µV |
| FiiO BTR13 | $59 | 29.6 dB | 12.3 dB | 0.6 Ω | 1.0 µV |
Of the 280 sources here, 279 reach 100 dB on both. 35 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 35 is the JadeAudio JA11, at $20. It leaves 20.6 dB of headroom on the Andromeda 10 and 3.3 dB on the Andromeda 2020, its output impedance is 0.5 Ω against a one-eighth limit of 1.06 Ω and 1.12 Ω, and its noise figure puts the hiss floor 3 dB and 21 dB below the 20 dB SPL this site treats as the point where a quiet room stops hiding it.
| Model | As printed | Tolerance | Standard |
|---|---|---|---|
| Andromeda 10 | 5-20 kHz | not printed | not printed |
| Andromeda 2020 | nothing printed | — | — |
Campfire Audio prints 5-20 kHz for the Andromeda 10 and nothing at all for the Andromeda 2020.
So one side of this comparison has a frequency-response number and the other does not — which changes less than it looks. The range printed for the Andromeda 10 comes with no tolerance beside it, and a range without a ±dB figure says nothing about how loud the headphone is at either end of it: thirty decibels down at the bottom and the sentence would still be true. On the only reading that would have made it a specification, the two sheets say the same amount: nothing.
Not a measurement; maker by maker.
Both have a page of their own. In full: Campfire Audio Andromeda 10 and Campfire Audio Andromeda 2020. Each figure on this page is labelled on those pages with where it came from, including the ones Campfire Audio never published — what that maker publishes, counted.