anli
Member
- Joined
- Oct 20, 2021
- Messages
- 86
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- 25
Ok, have bought it. Haven't noticed any (sub)bass degradation. 0.3 Ohm cable is in use.I'd consider buying another and using it with the 80% limit turned on. I have two of them, the oldest from 2021, and it's still fine. By contrast the Fiio BTR5 I had before that went bad after about a year. BTR7 has the 80% battery protection option which I use. It has been fine so far.
I severely doubt a difference between 0.3Ω and 1.2Ω would have any impact whatsoever on a 16Ω single DD earbud. I agree with you that high output impedance is a problem, and I would avoid something with very high output impedance. Stuff can be in the tens to even hundreds of ohms output impedance, and I have do stuff that is very obviously (and measurably) affected by that. But 1.2Ω isn't remotely high.
Have measured BTR7 Zout on 30 Hz and 1 KHz (27 Ohm load), It is the same and is about 1.02 Ohm (SE).
Overall impression is Ok, probably plenty of LDOs are not just marketing, but help to keep macro-dynamic (and, as a result, pseudo-scene and so on).