On power: 12 of the 13 Bluetooth receivers here reach 100 dB SPL on the Beyerdynamic DT 880 Edition (600Ω). It needs 2.5 mW at its 600Ω, and 1 of them do not get there.
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 1 that fall short are FiiO BTR11. The closest of them, the FiiO BTR11, delivers 1.5 mW into 600Ω against the 2.5 mW needed — 2.2 dB short.
The cheapest one that does reach it is the Fosi Audio N3 at $50, which delivers 7.5 mW into 600Ω — 5 dB of headroom over the 2.5 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 0.08 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 Beyerdynamic DT 880 Edition (600Ω) wants a source below 75.00Ω. Of the 7 Bluetooth receivers here that publish an output impedance, 7 are under it and 0 are not.
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 96.0 dB and 600Ω, the Beyerdynamic DT 880 Edition (600Ω) turns one microvolt of source noise into about -22 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 600Ω | Output impedance | Hiss in these | Power verdict |
|---|---|---|---|---|---|
| Shanling UP6 | $199 | 33 mW | not published | not published | Comfortable |
| Fosi Audio N3 | $50 | 7.5 mW | not published | not published | Enough |
| FiiO BTR15 | $109 | 7.5 mW | 1 Ω | -16 dB SPL | Enough |
| Qudelix 5K | $109 | 6.7 mW | not published | not published | Enough |
| Shanling UP5 | $179 | 6.0 mW | not published | not published | Enough |
| FiiO BTR17 | $199 | 15 mW | 1 Ω | -12 dB SPL | Enough |
| FiiO BTR7 | $199 | 9.0 mW | 1.2 Ω | -12 dB SPL | Enough |
| iFi GO blu | $219 | 8.8 mW | 1 Ω | not published | Enough |
| FiiO BTR13 | $59 | 5.0 mW | 0.6 Ω | -22 dB SPL | Marginal |
| EarStudio ES100 MK2 | $90 | 5.0 mW | not published | not published | Marginal |
| FiiO BTR5 2021 | $109 | 4.3 mW | 1 Ω | -16 dB SPL | Marginal |
| HiBy W5 | $109 | 4.3 mW | not published | not published | Marginal |
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 Beyerdynamic DT 880 Edition (600Ω) on other categories: USB dongles · portable players · desktop amplifiers · audio interfaces.
The Beyerdynamic DT 880 Edition (600Ω) page has every source in the database against this headphone, and the matcher takes your own numbers.