On power, yes — all of them. Every one of the 13 Bluetooth receivers in this database reaches 100 dB SPL on the Campfire Audio Andromeda 2020, which needs 4.0 mW at its 9Ω.
Power is one of three questions and the one that goes wrong least often. The other two — whether the source’s output impedance leaves the frequency response alone, and whether you will hear its noise floor — are answered further down, separately, because a source can pass one and fail another.
The cheapest one that does reach it is the FiiO BTR11 at $36, which delivers 25 mW into 9Ω — 8 dB of headroom over the 4.0 mW this headphone needs for 100 dB SPL.
100 dB SPL is a peak level, not a listening level. If you listen at 85 dB the same headphone needs 0.13 mW, which is 15 dB less, and the answer above changes for most of the category. The model page has the full ladder.
Under the one-eighth rule the Campfire Audio Andromeda 2020 wants a source below 1.12Ω. Of the 7 Bluetooth receivers here that publish an output impedance, 6 are under it and 1 are not.
The furthest over is the FiiO BTR7 at 1.2Ω, which is 1× the ceiling. Above that threshold the source stops being a volume control and starts being part of the frequency response. The simulator shows what that looks like.
The other 6 publish nothing at all on this, so they are not on either side of that count. This site leaves them blank rather than assuming a figure.
Hiss depends on the source’s own noise floor and on how sensitive the headphone is. At 94.0 dB and 9Ω, the Campfire Audio Andromeda 2020 turns one microvolt of source noise into about -6 dB SPL — and the threshold where that stops being noticeable in a quiet room is around 20 dB SPL.
Of the 6 Bluetooth receivers here that publish a noise figure, 6 stay below that threshold with this headphone and 0 cross it.
The remaining 7 publish no noise figure, so they cannot be placed on either side.
| Source | Price | Into 9Ω | Output impedance | Hiss in these | Power verdict |
|---|---|---|---|---|---|
| FiiO BTR13 | $59 | 67 mW | 0.6 Ω | -6 dB SPL | Comfortable |
| FiiO BTR15 | $109 | 93 mW | 1 Ω | 0 dB SPL | Comfortable |
| FiiO BTR5 2021 | $109 | 51 mW | 1 Ω | 0 dB SPL | Comfortable |
| FiiO BTR17 | $199 | 186 mW | 1 Ω | 4 dB SPL | Comfortable |
| Shanling UP6 | $199 | 176 mW | not published | not published | Comfortable |
| iFi GO blu | $219 | 46 mW | 1 Ω | not published | Comfortable |
| FiiO BTR7 | $199 | 93 mW | 1.2 Ω | 4 dB SPL | Comfortable |
| FiiO BTR11 | $36 | 25 mW | 0.5 Ω | 13 dB SPL | Enough |
| Fosi Audio N3 | $50 | 39 mW | not published | not published | Enough |
| EarStudio ES100 MK2 | $90 | 17 mW | not published | not published | Enough |
| HiBy W5 | $109 | 23 mW | not published | not published | Enough |
| Qudelix 5K | $109 | 35 mW | not published | not published | Enough |
Sorted by how many of the three questions the source answers well, then by price. A blank in a column is a blank in the manufacturer’s own documentation, not a zero.
The Campfire Audio Andromeda 2020 on other categories: USB dongles · portable players · portable amplifiers · desktop amplifiers · desktop DAC/amps · audio interfaces.
The Campfire Audio Andromeda 2020 page has every source in the database against this headphone, and the matcher takes your own numbers.