Downside to R2R Ladder DACs?

George, this is very true - two power supply caps in parallel have smaller ESR,

And it’s great we can access cheap ones from our little Chinese buddies who make them complete ready to go at what just our parts cost would be. Many more variation on this theme in ebay voltage and capacitance.
https://www.ebay.com.au/itm/DIY-kit-62cps-Nichicon-330uf-100V-Array-Power-supply-kit-for-Power-amp-D...

Cheers George

I don’t know much about R2R Dacs of 10 years ago,but when I see the inside of a Denafrips R2R Dac with over 400 capacitors I wonder more about the sound impact of any number of those caps going bad over time

It’s very good for power supplies, as many small cap have far lower ESR (google it) than one or two big caps of the same uF.
The energy release for transients is far quicker with lower ESR. The same now is happening for power supplies in poweramps of the higher end ones.
Look at these in my 2 x amps, if you look close there are 2 cap stacks per channel
https://ibb.co/cQXGW1F
https://ibb.co/2WbJc5k
https://ibb.co/h9b4T0X


Cheers George

@abraxalito, think I have some of them laying around, do you know if they're unity gain stable, no mention in the data sheet.

Cheers George
 

A sales person I generally trust told me to steer clear of used R2R DACs, since their reliance on high precision resistors causes them to sound best when new, and degrade fairly quickly.

All I can say is, typical sales persons BS to get a sale on something else.

@abraxalito while your here, been playing around with an old Arcam Alpha Plus, with it’s TDA1541 just using opamp I/V’s for now, what do you think of all the specs on the LME49710 (1.2μs to 0.1% settling time and insane distortion figures also) as one sounded dam good to me when I tried it.

Cheers George