Just spent the last 2 hrs doing some tests both in USB mode and BT mode.
In USB mode comparing BTR5 with Mojo using Roon, ASIO modes for both.
In BT mode, comparing LDAC with wired mode on LG VG30
Headphones/IEMs used: Beyerdynamic T1 and Fiio FH7
Music wise, been using 24/96 files, Redbook, 24/192, Tidal MQA streams, DSF files, 24/48, etc.
Steve Earle, Jean Michel Jarre, Satriani, Robben Ford, Genesis, Eagles.
When I listen I really want to know if I can live with a product seamlessly; if it compromises the music experience too much to mean it gets uses only in an emergency or when it's other merits (eg size, or microphone) force use temporarily.
Now... briefly I can say after switching between Mojo and BTR5 in USB mode extensively, there is very little in it. Maybe the Mojo has a bit more resolving power, space and smoothness, but it's marginal. Indeed,after switching so many times, I couldn't be honest and say I'd recognise one over the other blind listening. As I write this, am switching still between the 2 and have to keep checking as I forget which I'm listening to. Certainly it's not something I find myself thinking, "darn I should be listening to this via Mojo now" (and that goes for Bluetooth mode also).
I've solved the problem of the BTR5 not wanting to play PCM after DSD with Roon, by selection ASIO mode and DSD over PCM (DoP) in the settings. So far so good. It's been a champ with no glitching or failures.
As regards Bluetooth LDAC mode, the BTR5 is stable, clean, little difference between BT and USB, but perhaps a bit more air and comprehension of the musical structure with Roon/USB mode vs BT via LG V30.
The differences are small, perhaps so small as to be placebo. I would like to rig up some blind tests. Again, I'm writing this and am having to metaphorically pinch myself when I realise am streaming BT.
Comparing the BTR5 with BTR3, the BTR3 sounds less refined in the treble and not as open as the BTR5. There's not nearly as much power with the BTR3, which makes the BTR5 sound more dynamic. The BTR5 sounds much more of a mature, audiophile product than the BTR3. BRT5 works MUCH better as a USB DAC with the ability to play native DSD, and HD files, rather than being limited to 16/48 as the BTR3 is. Definitely a worthwhile upgrade.
All this is Good News. I'm loving the fact that this little thing for so little money can do so much. The very fact that it can be compared +vely to a mature dedicated DAC like the Mojo is amazing in itself, but add the exemplary BT performance and this should definitely be another home run for Fiio.
PS... Driving capability is amazing... 600 ohm T1s volume around 40-43/60 for normal listening, FH7 around 19-20. Beware switching between modes as levels are retained, so if you are going from USB mode using high impedance over ears to BT using high sensitivity IEMs beware!!
Great product
@FiiO