The Campfire Audio Andromeda 2023 is 6.375Ω at 110.6 dB/mW; the Campfire Audio Astrolith is 8.2Ω at 100.1 dB/mW. This page covers what they ask of an amplifier, not how they sound.
The Astrolith needs 10.5 dB more than the Andromeda 2023 to reach the same loudness — 0.98 mW against 0.09 mW.
| Specification | Andromeda 2023 | Astrolith |
|---|---|---|
| Impedance | 6.375 Ω | 8.2 Ω |
| Sensitivity | 110.6 dB/mW | 100.1 dB/mW |
| Sensitivity (voltage) | 132.6 dB/V | 121.0 dB/V |
| Power for 100 dB | 0.09 mW | 0.98 mW |
| Voltage for 100 dB | 24 mV | 90 mV |
| Current for 100 dB | 3.7 mA | 10.9 mA |
| Highest source impedance that leaves them alone (one-eighth rule) | 0.80 Ω | 1.02 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.
37 sources are low enough in output impedance for the Astrolith under the one-eighth rule but not for the Andromeda 2023 (FiiO SnowSky Tiny B, FiiO KA15, FiiO BTR15, 34 more).
37 sources stay below the audible-hiss threshold with the Astrolith but cross it with the Andromeda 2023 (Kiwi Ears Allegro Mini, FiiO BTR11, FiiO KA13, 34 more).
280 of the 280 sources here reach 100 dB on both.
The Astrolith is more demanding than 28% of the 567 non-electrostatic models in this database; the Andromeda 2023 than 1%.
| dB SPL | Andromeda 2023 power | Andromeda 2023 voltage | Astrolith power | Astrolith voltage |
|---|---|---|---|---|
| 80 | 0.9 µW | 2 mV | 9.8 µW | 9 mV |
| 85 | 2.8 µW | 4 mV | 0.03 mW | 16 mV |
| 90 | 8.7 µW | 7 mV | 0.10 mW | 28 mV |
| 95 | 0.03 mW | 13 mV | 0.31 mW | 50 mV |
| 100 | 0.09 mW | 24 mV | 0.98 mW | 90 mV |
| 105 | 0.28 mW | 42 mV | 3.1 mW | 0.16 V |
| Source | Price | Headroom, Andromeda 2023 | Headroom, Astrolith | Output impedance | Noise |
|---|---|---|---|---|---|
| JadeAudio JA11 | $20 | 18.4 dB | 9.0 dB | 0.5 Ω | 1.7 µV |
| FiiO KA11 | $29 | 30.5 dB | 21.1 dB | 0.7 Ω | 1.7 µV |
| FiiO BTR13 | $59 | 27.4 dB | 18.0 dB | 0.6 Ω | 1.0 µV |
Of the 280 sources here, 280 reach 100 dB on both. 24 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 24 is the JadeAudio JA11, at $20. It leaves 18.4 dB of headroom on the Andromeda 2023 and 9.0 dB on the Astrolith, its output impedance is 0.5 Ω against a one-eighth limit of 0.80 Ω and 1.02 Ω, and its noise figure puts the hiss floor 3 dB and 14 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 2023 | 5-20 kHz | not printed | not printed |
| Astrolith | 5-25 kHz | not printed | not printed |
Campfire Audio prints 5-20 kHz for the Andromeda 2023 and 5-25 kHz for the Astrolith.
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: Campfire Audio Andromeda 2023 and Campfire Audio Astrolith. Every figure on this page comes from what Campfire Audio published, or is derived from it — what that maker publishes, counted.