The Campfire Audio Andromeda 2023 is 6.375Ω at 110.6 dB/mW; the Campfire Audio Chimera is 5.5Ω at 108.1 dB/mW. This page is only about what they ask of an amplifier — not how they sound, which no specification on either sheet can tell you.
The Chimera needs 2.5 dB more than the Andromeda 2023 to reach the same loudness — 0.15 mW against 0.09 mW.
| Specification | Andromeda 2023 | Chimera |
|---|---|---|
| Impedance | 6.375 Ω | 5.5 Ω |
| Sensitivity | 110.6 dB/mW | 108.1 dB/mW |
| Sensitivity (voltage) | 132.6 dB/V | 130.7 dB/V |
| Power for 100 dB | 0.09 mW | 0.15 mW |
| Voltage for 100 dB | 24 mV | 29 mV |
| Current for 100 dB | 3.7 mA | 5.3 mA |
| Highest source impedance that leaves them alone (one-eighth rule) | 0.80 Ω | 0.69 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 Andromeda 2023 under the one-eighth rule but not for the Chimera (FiiO KA11, JDS Labs Atom+ (2nd gen), JDS Labs Atom Amp 2, 2 more).
7 sources stay below the audible-hiss threshold with the Chimera but cross it with the Andromeda 2023 (FiiO KA13, FiiO K11, Fosi Audio K7, 4 more).
280 of the 280 sources here reach 100 dB on both. That count is about power only — the output-impedance and hiss lines above are separate questions, and a source can pass this one and fail those.
Each model has a page of its own with the full source list, the hiss estimate and the provenance of every figure above: Campfire Audio Andromeda 2023 and Campfire Audio Chimera. Every figure on this page comes from what Campfire Audio published, or is derived from it — what that maker publishes, counted.