> By default it's 44.1kHz and I have tried to change it to for example 192kHz while listening youtube music video and sound is better/richer on 192kHz. Do I need to change that setting to some other Sample Rate and what about Buffer Size ( Latency )? When I change Sample Rate, Buffer Size changes automatically.

You can set it to the smallest buffer size if there's no hiccup in the playback. this gives you less latency. very important when you are gaming.

> Second question is about CC-Mode. By default it's Stereo and I can change it to Multichannel but when I do that I don't have any sound on headphones. Do I need to change that to Multichannel because better positional sound for gaming or Stereo is way to go? Or Multichannel option is for something else?

it has nothing to do with positional sound. it's just you have more channels with it...

if you want positional sound (kind of)... maybe you can try crossfeed. that kinda simulate speaker like soundstage when listening with headphones.

> I've tried to use EQ settings and I've used oratory1990 preset for HD800S and when I have done that sound is less loud/rich. Not very much but I can notice it when I'm listening youtube music video and turning EQ setting ON/OFF.

The EQ you showed has a bass boost but lowers the average volume significantly after 100hz. so with real music content you'll feel it's less loud rich. When comparing with EQ off, you need to turn up the volume when EQ on.

> Is it better to use that EQ settings for gaming or not?
https://www.reddit.com/r/oratory199..._ … _rme_adi-2

The majority of reference grade sennheiser headphones (hd800s included) already have good frequency response and can be used without EQ. Whether or not to use EQ  depends on your personal taste. Some people likes the harman curve (where your eq preset is based upon) while others don't.

> Is that setting for professional music reproduction or universal better setting then default.

Harman curve is not for professional music reproduction. It's just a frequency response signature that many people appreciate.
For real professional music reproduction calibrated studio monitors are usually used. and the calibration process is mainly based on EQ.

> Also do I need to change something in ADI-2 options because there are many options there I don't even know what they do. I'm mostly interested in option Loudness and Hi-Power/Auto Ref Level. If you have some recommendation it would be great.

Again this depends on your taste (and for the loudness feature that also depends on how old you are). Read the manual to get more information.

> Before ADI-2 I've used Mayflower ARC Mk2 + oratory1990 preset with Peace software as first DAC/AMP with HD800S and it was great but not very loud and I wanted to buy ADI-2 as my endgame setup for gaming/movies but it has many more options. I want to configure it and forget about it.

Well the key benefits of using ADI-2 is that you have the flexibility to fine tune your sound... I never setup and forget about it... I experiment with the offered DSPs all the time. Otherwise I won't even purchase it in the first place.

> And what to do with default windows volume? Do I put that option to max 100 and use only ADI-2 for sound level?

Right.

Totally agree.

Loudness is designed for low level listening, boost a bit at highs and lows to compensate our listening ability at low volume, so do not use it at headphones with loud level.

Loudness and Volume as words itself can mean the same and cause some confusion...as here...

Please read again page 14 to get an explanation for “Loudness”, and page 15 how to set it up.
It’s not to set -35 dB, but first find out your personal low listening level, then use this value.

Everything else: leave in factory setting, usually that is what fits best.
Exception: set the EQ you like.

If you want automatic sample rate switching UNINSTALL all drivers and run ADI-2 in Stereo-CC-Mode (= default factory setting).

> Should it be switching it according to the media being played, like games/movies and music?

Of course. Its not like with a turntable where you need to select 33 or 45 U/min or a reel-to-reel, where you could select different tape speeds like 4,75, 9,5, 19, 38cm/s.

Audio content has standard headers which include among other things the sample rate. Therefore an audio player can get this information and interact with the driver to select the suitable sample rate otherwise audio would be played too fast or too slow.

With recording its a little different, you need to configure for your recording project in which sample rate and bit depth you want to record the audio content.

But for pure playback the application should interact with the driver and change samplerate automatically without user intervention. And again proactively, upsampling everything to e.g. 192 kHz to have one uniq samplerate does not bring anything in terms of quality. You will only get the quality of the initial A/D conversion, with conversion to higher sample rates only your audio file become bigger in size and the computer needs to process and transfer more data through the digital connection.

If you do not require streaming (like "lucky me"), then simply get MusicBee with ASIO support and change of sample rate runs meanwhile excellent and you can keep the RME ASIO driver installed which is required for firmware updates.

But there are also other streaming services, which interact well with the RME ASIO driver and perform correct sample rate changes. I tried a demo abo and found out, that I am not so fond of streamed music. And you never know what they do with the original audio content.

leejeffriess369 had a very similar problem. See https://forum.rme-audio.de/viewtopic.ph … 8#p181028. After some back and forth it came out that he had chosen the way through the Windows kernel mixer as output instead of one without. I tried to explain the difference there: https://forum.rme-audio.de/viewtopic.ph … 2#p181332.

The output device MME (Multi Media Extension) is the old Windows kernel mixer. Depends on the software what is selectable. Output device <Analog (1+2) (ADI-2 ***)> is usually also through the Windows kernel mixer (or perhaps shared mode, have not yet solved this mystery)

First: For sample rate switching by the player software without MADIFace you have to use software that supports WASAPI. Second: If the software does, you have to select the output device that is named something like <Analog (1+2) (ADI-2 ***) [exclusive]> or <Analog (1+2) (ADI-2 ***) WASAPI>.