Big source improvement using CD player

Try Tidal its better sound quality than Spotify.https://tidal.com/

If you're into streaming, I would much recommend a USB DAC so you can either stream or playing from your PC.  For your budget, I would recommend the Ayre QB9 DSD used.

So you want a good SACD, for spinning silver disk, right.
You have Spotify and the CD sounds better? Does it have to do both?
A CD I have a great little nugget, if that's what you want.

Regards

Spinning silver was the revelation.  But I do not want to be limited to 17-18 songs on a cd.  I was wondering if a dvd would sound just as good if copied with the same file sizes.  Reason being is that I refuse to change my cd every hour not to mention the predictability of the songs.  I'd like to throw 200 songs on a DVD without losing sound quality.  Is this possible? @oldhvymec what do you have?

Turn a 105 into a giant killer

It is common knowledge that the Oppo 105s Achilles Heel is the power supply (less recognized is the IEC and jumper for 120/220, as well). I found aftermarket PNP modules on Ebay as well as the EIC jumper. I bought an expensive EIC/jumper kit first, and was shocked at the sonic improvement. Once inside, I could see how easy it is to replace the OEM PS

For ~ $400 a 105 can be very competitive with many hi-end cd players/transports that plays most all current media
105s can be found used for ~$750, so...

hth