..........I work on my PC 12-16 hours a day, when needed, and I need my music to be close to me and I want fast searching on my collection. But as we all know, PC brings problems, USB transmission and jitter and other stuff. I have tried to improve this for the last 3-4 years trying many tricks like iFi products or Uptone USB Regen, but for me the best was the JCAT USB Femto. It is expensive, around 400 EUR, but it makes miracles. It is a PCI express USB board and you just plug it in your PC PCI Express 2.0 or newer port and power it externally via an Sbooster linear power supply or other 5V power source and thats it. Your DAC will evolve a lot, like my previously used Qutest or currently TT2. BUT JCAT released last year a new model called JCAT USB XE. It is, as expected, more expensive, but it brings a lot of improvement soundwise. Well, my post does not want to make any marketing to JCAT products, but want to express more about how important is our source, about how and what we feed to our DAC and then how much better a custom made amplifier can sound when using these simple tricks of feeding the DAC good data. I use here TT2 and MScaler. The Mscaler is known for its merits, all can read a full thread of it. But when I upgraded my JCAT USB card from the normal Femto to XE I went up to a definitely new level. It is incredible to find out that using TT2 and Eternity and Verite you can still find an improvement. Well, source matters, never forget about this guys!
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Yes files, source and DAC matters when you have good amplifier and headphone !
All the game is to assemble a good match from DAC, Amplifier (tubes), Headphone. Chasing perfection could be a a non ending game with extensible wallet.
It turns for me that Eternity is a really good amplifier and depending of tubes you can get many flavor and sound signature which make headphone and DAC pairing much more flexible.
I'm also using my PC for work a lot unfortunately even if I have spent a lot on usb cleaner and better power supply and jitter optimization at the end I have switched to a much lighter players. About jitter and usb isolation for me it turned to be more an issue due to not have a dedicated player unit and a not so well implemented usb (isolation/clock) on DAC. So i decided to not invest anymore on my work PC for music listening. I have professional NASs where work and music data are stored which makes my life easier !
I use Rpi4 PiCore player with Pi2AES hat or daphile on a dedicated nuke PC/laptop. I have a huge collection of music file (No Roon, No Spotyfy, No Tidal...) and stream from bandcamp from time to time. Streaming from LMS from NAS with Web based UI and is easy to use from my work laptop and allows to control multiple players in home.
I've also many DACs some that measure well and some I finally likes better ! The Soekris ones sounds incredible for the bucks and matches my needs !
With most DAC in a Chip (mostly the one that measure well) I use oversampling with SRC filters and with Soekris i use no oversampling and let the DAC do it's job with some customized filters.
All this is only audible if at the end you have a good amplifier with a good headphone !
Currently I'm so happy with Eternity, Soekris 2441 and rpi4 (with SoundCheck kit) + pi2AES that I even just switch some tube combination depending of my mood and music.
I sill have other DAC/player/amps in other rooms but i do not personally listen as much as the previous one !
So finally many thanks to Thomas, Soren, Michael, Klaus to makes me pause in purchasing new stuff ... Now it time to just enjoy listening music !