Downside to R2R Ladder DACs?

cheeg your dealer doesnot sell any high quality R2R dacs 
that’s why all the misinformation a Lampizator, msg, Aqua ,
Denafrips .and and a bunch of otherbrand name  dacs made Today Are excellent . Waay too much misinformation .
it all comes down to the engineering and implementation 
of the design,your dealer is Totally bias ,I learned 40 years ago 
never put all your eggs in one basket ,there are a Many dealers online !!

Plenty of electronic components will drift over time.  You probably won't hear it s it is gradual.  In direct comparison if you had a time capsule and kept a new one 20 years later to compare, you may be able to hear the difference.  Not all R2R boards are the same so a general statement is that it won't be a factor.  Is your salesman saying that a chip set won't also degrade or drift over time?  Well at least you will be enjoying your music more until that time comes!

Happy Listening. 

HI
I just bought a BODER PATROL SE I connected with a sonore optical module connected to a silent angel Z1
The DAC ( I change the tube with a mallard and the fuse with a synergistic orange) for les than 2000USD is absolutely fantastic much much better than my Meitner I owned
It is a R2R emotional DAC with a lot of energy
I cannot stop now listening my room library  so addict
bertrand

@berti For some reason I can’t message you directly from your profile. Would you mind sending me a PM regarding your findings with BP vs Meitner?  Which Meitner DAC did you own?  How old?  How would you characterize the two sounds?  I have an Emm labs/Meitner that I am trying to replace and any thoughts on yours compared to BP would be much appreciated. I personally find the emm labs to sound really good but it is limited by sampling rate. To me it seems a bit bright and thin but I wonder if it is my speakers or the DAC. Thank you in advance if you would be willing to share your thoughts in a PM. 

@cheeg, that salesman you trust is untrustworthy.  Move on.

I have an ancient Wadia 15 that only plays redbook. Uses the famous Burr Brown PCM63 and sounds wonderful. If there has/had been drifting it still managed to outperform a bunch of DACs in our local shootout. One of these was the well known Yggdrasil which although very detailed did not provide the boogie and foot tapping. The decision was unanimous, all preferred, on redbook only, the Wadia to that Schiit  :)

So drifting resistors or drifting clouds or whatever, the message is use your ears.

I think in future when my wife wants to know which DAC we'll be using, I can say "play it through the 'drifter' my dear.