Streamed music sounds awful in my system and I don't know why ....

Poor PC gets blamed. I recently built a Windows 11 based player/streamer and play my music through that. There’s probably tons of background services running on OP’s machine that might be degrading his playback. Simple things like switching off leds on motherboard and not running any other process except music playback is what a PC should do. All the prebuilt music players like Aurender, Lumin etc only play music and that is how a PC should be “purpose” built. Fidelizer optimizes the services even further. Also don’t use WMP. Use a different software like Foobar2000, Audirvana, etc with AISO or WASAPI driver.
 

If you cannot do this with your existing PC, then get a nice streamer and be done. But folks need to stop blaming the PC. 

“Poor PC gets blamed”

@milpai 

If I recall correctly, didn’t you recently upgraded from a laptop to custom build streamer and couldn’t believe the improvements over your laptop? 

It is possible to modify pc and get pretty nice sound, with some research and a modicum of skills possible to get there. Greatest problems with Windows platforms, Windows OS and power supplies. Even the Windows optimizing OS software doesn't turn off all possible processing for lowest noise, HDPlex solutions can help on power supply, still not optimum.

On Mac platform power supply issues easier to address, OS is greatest issue with this. Newest Mac OS loaded up with many unneeded embedded apps (for a dedicated music server), these apps cannot be erased and maintain a functioning OS. Result is mac os noisy.

One could go to third party or Linux OS for both platforms, this will help. One example of pretty nice Windows computer setup would be running something like Euphony OS with HDPLex power supply. One could also have pretty nice Mac setup with Uptone power supply running Euphony.

Above setups also dependent on quality of motherboard, RAM, SSD, processor, etc. To be really top flight all needs to be optimized. So bottom line, you can get pretty nice performance out of this type of diy pc. One should always keep in mind all music servers are computers, use computer motherboards, implementation means everything. Both off the shelf and bespoke music servers are essentially custom builds, and both beat the general service computer. I agree, general service computers have no business in high end system.

@lalitk ,

That is correct. But what I am saying is that Windows PC is not necessarily a cause for bad sound. Devices need to be dedicated and optimized. Granted that general public will not be able to do that and hence should probably go with ready made servers. My server build was an ear opener for me.

@sns,

Let’s  agree to disagree on Windows PC customized for audio. I don’t necessarily believe that one has to go to Linux or other OS to get great sound. At least with my dedicated audio server, I experienced an amazing upgrade that I never thought was possible. I would think that only DAC upgrade might make a difference. But I do get the point that companies like Aurender, Lumin, etc put heroic efforts in power supply and hardware design to minimize noise.

@milpai I'd suggest doing trial with Euphony Version 4 OS for Windows platform. Run Stylus music player and compare with present setup.