USB DACs that outperforms OPPO 105D's internal DAC?

Just get a streamer. Life will be better. You can use tidal connect (and others) and be done with it. Tidal connect will let you use your phone, tablet or computer to pick songs. When you click on them the streamer is actually pulling and playing the data.

I have never heard the blue sound node but the ifi stream is $400 and sound better according to these guys (link below). I am using one and it was easy to setup and has had no trouble. The only add thing is sometimes after I connect I have to skip a track before it plays when booted up. Amazon sells them, if you don’t like it send it back. 

https://youtu.be/PP1Zsh078nU?si=xw7KdDaqkatP-NtS

It’s not really a question of what under $1k dac will sound better than the oppo as much as what under $1k dac won’t sound better than the oppo.  One of the reasons I put off getting into serious streaming was the poor sq I got when streaming Tidal with my 105.  It wasn’t until I finally broke down and bought my first “real” dac did I realize what streaming was all about.

@ihcho-

I went through this years ago and understand your concerns with the Oppo. The Schiit Bifrost is a popular dac and retails for around $800- there are others out there as well. I cannot recommend Topping. 
If you go DNLA with your Oppo you can pick up a solid state usb drive for a good price, transfer your music files to it and use your IPad with the Oppo media control app to browse your files and control playback (no need for TV display). It’s kind of antiquated now but it will work until you make your decisions on other gear.

Personally I would lean towards a device that allows you to rip your music to an internal drive (as mentioned above) and that handles D/A conversion as well. Keep your Oppo for playing movies- 

Thanks for all comments.

Now I have more idea about playing music from USB drives and which devices are to look at under my budget.

@mlsstl 

I think it became a trend, maybe to show off how expensive stuff on has 🙄