And me stupidly believing “All You Need Is Love”… 
Back to the point - but you let me use HQP?
This is correct, no need to bother Jussi for confimation.
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I respect your opinion but let’s wait and see…
I think you are the only one waiting, good luck.
Hmm - so what for to wait?
I just disconnected the Roon Core from the network during a song playing and …it stopped playing, quod erat demonstrandum!
So I guess it’s not HQP but Roon is that another component which increases complexity…
I go back to BubbleUPnP, no such problem there, despite disconnecting the phone with BubbleUPnP from the network, the music still plays, until the end of the song.
HQP handles everything by itself - And that’s it!
Thank you very much for the inspiring discussion and and goodbye.
That’s the standard UPNP behavior, if it was OpenHome (Linn UPNP extension) it would have kept playing until the end from the queue, but Roon doesn’t use UPNP nor UPNP OpenHome with HQP
you confuse me with @musicjunkie917, i think; but in case you don’t, please find the links relevant to my comment below
- the classic let me google it for you - DuckDuckGO - search for “linux adi-2 dac”
and from those results, i found the following two relevant:
Note: DietPi / RoPieee / Volumio are custom build / embedded Linux distributions (same as HQPlayer Embedded or HQPlayer NAA); for some DACs to work properly in Linux, some extra patches must be applied to the kernel source code; jussi_lako owns RME ADI-2 DACs, so support for them is well tested & working fine in HQPlayer Emmbeded or NAA
You can think it as this way; you can replace Roon’s playback engine with HQPlayer. Then Roon is the front-end user interface and HQPlayer is the one doing playback.
For Tidal, you may like Roon doing MQA decoding before HQPlayer produces the final output.
However, point of HQPlayer is not to produce bit-perfect output to non-bit-perfect DAC. But instead produce optimal output data for a bit-perfect DAC to maximize the final analog output signal quality. Then there are some shades of grey between the two.
For local files, and for Qobuz and HRA streaming services, HQPlayer can do everything standalone. Through UPnP, you can also do standalone Tidal, but without MQA decoding.
Thank you very much for your answer.
I want to use HQP, even if I’m not using it to its full potential right now (but I study hard 
) because I’m a perfectionist - and HQP is the most refined product I know in this class of products.
For example, it’s the only BubbleUPnP Endpoint soft for the RPI-4, among those I know, which handles WAV 192/32 files “untouched”, when I want them to stay untouched - and if something does its job well in one aspect, I believe it’s perfect also in others.
Sure - Thanks!
*IMHO * you should not use HQP for playing bit perfect, as the aim from Signalyst is to reconfigure the bitstream by sampling up, increase bit depth, add other much more sophisticated filters and so forth.
I have concluded bit perfect is not the most favourable way to playback a great deal of my favourite tracks, as the master is not good enough and I personally would not have produced music as it generally is. The further back in time I get, the less the difference is, even though I can clearly detect the difference. Modern productions is so often sloppy (compressors, limiters, loudness war), I simply cannot stand it unless “washed” by HQP. Most modern DACs try to do the same, but with insufficient DSP power. The filtering of a bitstream is better with the prior upsample, internally or by external resampler, thus offerering better s-to-n ratio. I have given up the transparency effort, as there are so much music that cannot pass the close-up scrutiny in an exceptionally quiet rig. Now finally, it takes a lot of efforts and time, unless you got plenty of money and is able to buy your way through, I can sit back, enjoy music and finally feel there are no (or few) “bad recordings”. Or should I say there are bad productions, but the vast majority are possible to correct by using the HQP. I have done some tests with external units claiming to upsample and correcting. There are several brands out there making such units. I have not tested very many, it has been with friends and at exhibitions, but none of them come even close to HQP.
I look at musical experience as a path that after a while split into two, one is dogmatically puristic and play as is (sometimes suffering the production flaws), the other is more pragmatic and chooses to listen to the music you like, with maybe a little help here and there and according to personal preferences. It has been so for ever and sometimes fighting each other on eg forums, sorry to say. Basically, we search for the same thing, be satisfied with our music palyback. No one is to tell any other who is right or wrong. Try HQP and judge for yourself. It made me after a long music life (now 60 years old) enjoy almost all my music, even the quite poorly produced hard rock from 1980 to a good portion of 1990 with some brilliant exceptions as well as the bombastic super produced gothic metal that often rip your ears to shreds. I am grateful for this opportunity. 
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Thank you very much for these interesting comments.
I am also pragmatic and I choose to listen to the music as I like; so as you advise me, I will be happy to experiment with HQP.
Admittedly, I had a period of fascination with often promoted purism, but I did not let myself be seduced forever.
The choice is whether you use HQPlayer’s DSP processing, or the one inside your DAC. HQPlayer is designed to replace the resource constrained cheap DSP inside DACs with better algorithms thanks to much more processing resources being available on modern computers.
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Tough nut to crack, ADI-2 DSP Isn’t bad…
So evenings of experimentation are coming.
Hi, I have the same DAC (ADI-2 DAC fs, gen 2 with AKM 4493EQ chipset). It becomes a completely new DAC when setting Direct DSD to short circuit the internal DSP, however good it is at 40 bit depth it is far from the computing power at 64, 80 and 128 that Jussi utilize in HQP. It does not come cheap though, the threshold for me to set up and install things in Linux and the darn Terminal (becoming more and more of a love/hate relationship) is way over my level, but eventually I get there (with a little help from my friends …). I never boarded the train when it became popular with Linux, I curse now instead … 
I use ASDM7ECv2 as modulator, poly-sinc-gauss-XLA filter, DSD DoP 256 output, network audio output to self-built passive cooled NAA, with the final touch of a Matrix Audio Element H separate and galvanically isolated as well as airborne noise shielded as final output USB controller card with external linear psu shared with the RME DAC as becoming a common ground with exceptionally low ground ripple. It is still the best I have heard, there are other problems in the rig now subject to modifications.
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The AKM 8x digital filters vs 256x digital filters in HQPlayer already make a difference. That about $10 AKM DAC chip doesn’t have as much computational power as a regular PC or Mac…
I have measured the differences as well, and posted couple of times.
The most purist approach you can take is to set the ADI-2 into DSD Direct mode and run it always at DSD256.
P.S. I have two RME ADI-2 Pros, along with huge bunch of other devices as well.
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and doing this with a SMSL D6 would be the next best thing (because it would be a bit more cost effective)?
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Yes, with updated firmware it is very inexpensive device that performs great at DSD512 in DSD Direct mode.
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My SMSL D-6 running at DSD512 measures a little bit better than my AKM ADI-2 even in DSD Direct mode, in all measurements I’ve done in < 100kHz bandwidth.
So I wouldn’t say D6 is “next best thing” compared to ADI-2.
It measures a bit better (doubt there would be audible difference) and is way cheaper.
Get one while its still around (and as Jussi mentions, update to latest firmware on shenzhenaudio website - SMSL designed this product for them)
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Also note the ADI-2 is still really good if you feed it PCM705k or DSD256 (not DSD Direct mode) from HQPlayer and then you also get to use the really good built-in headphone amp.
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