R2R Ladder DACs or All in One Streamer Solutions


I am soon to own a Pass INT 25 integrated amp. I also own an Oppo 205. 

I am now searching for a separate DAC to replace/improve the DAC in the Oppo.
Budget $2k. Used preferred.

I like the R2R ladder sound and want a tube inside for a little balance with the Solid State gear.
My current source is the Oppo 205.

I am also shopping for a Streamer/Ripper/Storage device. Roon friendly and DSD capable.
Budget also $2k. Used Preferred.

It seems that the few offerings of these all in one solutions all contain a DAC.
My thought is that the DAC included will not be any better than the Oppo so it is of little use.

Has anyone been down this road lately? 

Am I missing something?

Thanks in advance for sharing your experiences!
chorus
The TDA1541 was in acclaimed CD players in 1987. It's 2020. Those are the same players considered out of date and poor sounding by the 90s. That DAC was in many of the players that gave digital a bad name. Now it's awesome?

Maybe the Orchid is the fake one compared to the 24 bit. The 24 bit likely sounds much closer to the source. That does not mean you will prefer it. Most people prefer "fake".

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@jjss49 
Got it. Thanks. 

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yeah, I avoid oversampled echo-chamber unnatural sound.
How did a DAC that was way behind the times 30 years ago (TDA1541) magically become good?
I’m no believer in ’magic’ but seems to me that times changed in the direction of better numbers (THD, SNR) and not in the direction of better sound. So ’behind the times’ is just a piece of propaganda - in fact TDA1541A is the best measuring 16bit DAC chip out there.
Surely if there are classic cars, classic homes, classic amps, there can be classic chips. Occasionally, people know WTF they’re doing and they implement things beautifully. "Oh, that old Frank Lloyd Wright house? Who’d want to live in that?" Um, me.

Oh, and: http://www.lampizator.eu/lampizator/TDA1541%20corner/TDA1541.html

The point is simple: one can dispute that this chip sounds good or assert that there's a better chip which has come along, but resting one's argument on the fact that something is old is facile.