Fiio BR15 R2R - Some Measurements

[Guddu]

These following are some measurements for Fiio BR15 R2R DAC, priced @200$.
These were captured using cheap E1/2 OTG with REW.

Fiio Published parameters:
RCA Out: 2.2 v THD + N: About 0.017% (1kHz/0dB@10KΩ)
XLR Out: 4.4 v, THD + N: About 0.015% (1kHz/0dB@10KΩ)

USB Input, XLR Out
Mode: Over Sampling (OS) (with 384 Kbps)

USB Input, XLR Out
Mode: Non Over Sampling (NOS)

USB Input, RCA Out
Mode: Non Over Sampling (NOS)

Optical Input, XLR Out
Mode: Non Over Sampling (NOS)

Coaxial Input, XLR Out
Mode: Non Over Sampling (NOS)

THD+N matches near to published parameter i.e., about -74dB.


Frequency Response
USB Input, XLR Out
Mode: OS & NOS

Zooming IN

***Higher frequency dip

Multitone - OS & NOS

Jitter (J-Test)

====================================
Adding some measurements from MultiTone Analyzer
--------------------------------------------------------------

BR15 Over Sampling (OS) Mode - THD+N @ -6dBFS & -12dBFS

BR15 NON Over Sampling (NOS) Mode - THD+N @ -6dBFS & -12dBFS

MultiTone Analyzer allows different ASIO drivers to be used and I have Fiio & Topping's drivers here.
Noise / SNR is measured better here however THD + N are just marginally different.


Enjoy

 

[JSmith]

Thanks for this work... a bit of a mess all round really.


JSmith

 

[Guddu]

Thanks for this work... a bit of a mess all round really.


JSmith

BTW, Listening to it does not give me indication of anything bad, it sounds good in fact.

 

[MaxwellsEq]

Interesting measurements, thank you. Quite disappointing results though. Most 1990 CD players were better than than this!

 

[Chanur]

I had thought about ordering one of these to get blue tooth and replace my Modi 3+. Now hmm.

 

[Guddu]

Just added some quick RTA measurements from MultiTone Analyzer as well.

 

[Palladium]

I had thought about ordering one of these to get blue tooth and replace my Modi 3+. Now hmm.

Not remotely competitive with the cheaper E50 II which also have built in PEQ via phone app using BT

 

[Chanur]

Not remotely competitive with the cheaper E50 II which also have built in PEQ via phone app using BT

Was planning to get a WiiM Mini since I will mostly use Spotify in this bedroom set up. I think it has PEQ.

How ever I could just Bluetooth into this with LDAC I suppose.

 

[Sokel]

What's interesting is the amount of mains noise reduction by the use of ASIO drivers (the Multitone Analyzer charts) .

It's not the first time I've seen it, it seems that the way ASIO drivers exclude all other audio does a little magic there.

 

[Fabio Sampan]

Hello everybody !
I have this Fiio Br15 Dac and is great! I would like to connect a subwoofer to it so it is possible to use all the 3 analog outputs at the same time ? Ex: rca 1 to tube preamp headphone, rca 2 to subwoofer and xlr to an stereo amplifier?
Any drawbacks with this configuration?
Thanks a lot!

 

[Guddu]

Hello everybody !
I have this Fiio Br15 Dac and is great! I would like to connect a subwoofer to it so it is possible to use all the 3 analog outputs at the same time ? Ex: rca 1 to tube preamp headphone, rca 2 to subwoofer and xlr to an stereo amplifier?
Any drawbacks with this configuration?
Thanks a lot!

It should work without any issues.

 

[Fabio Sampan]

Thanks Guddu!
I ask because it seems that a voltage drop happens so a drop in sound quality when rca+xlr output are connected.
Is it also happening on both dual rca outputs only without xlrs? I just want to make sure before buying some nice quality cables to make everything working perfectly!

 

[Guddu]

Thanks Guddu!
I ask because it seems that a voltage drop happens so a drop in sound quality when rca+xlr output are connected.
Is it also happening on both dual rca outputs only without xlrs? I just want to make sure before buying some nice quality cables to make everything working perfectly!

I don't think the voltage drop will happen here, I can try to test later in the day.

 

[Fabio Sampan]

Wonderful!!! Thank you very much!

 

[Fabio Sampan]

Let me know about your results! Thanks again

 

[Guddu]

Let me know about your results! Thanks again

2.1 ~ 2.2 volts on all RCA outputs.

 

[Fabio Sampan]

Thank you Guddu!
So no power drop when xlr and rca outputs are used at the same time or only when both rcas are used together?

 

[Guddu]

Thank you Guddu!
So no power drop when xlr and rca outputs are used at the same time or only when both rcas are used together?

I checked RCAs only but I really don't think there would be any drops, that issue is normally with passive splitters. Active/powered devices like this don't have such issues.

 

[Fabio Sampan]

Thanks Gudu!
I will try rca + xlr and we ll see.

 

[Fabio Sampan]

Hello,
After testing, the xlr power drops to rca power when both are connected but the sound caracter is not really impacted. Just need a bit more juice from the amplifier.