DAC AD1862: Almost THT, I2S input, NOS, R-2R

[Tesla Audio]

Situation with sourcing any of NOS dac's is realy bad. Very dificult to find anything with normal price.

 

[Brijac]

I do never use ceramic class 2 for power decoupling in a dac.

Murata gj8 is solid if there is a need for more than 1uf in small space 😁

 

[zoom777]

Miro's TO-DO list....
Buy the chips before they become expensive....
"to-do list:
DAC8811 (CPLD data input)
PCM69 (same as the input of AD1865, but with added MCLK)
DAC702BH (CPLD data input)"

 

[namghiwook]

I've seen that some builders of this thread who used Z-foil or S-foil resistor for Riv.
Is there any advantage using Z-foil or S-foil resistor for Riv over a metal film resistor like 71-RN60C2701B?

 

[nopants]

it's not really worth the exorbitant expense unless you want to spend the money, just socket the riv position and try a few diff brands

 

[zoom777]

I've seen that some builders of this thread who used Z-foil or S-foil resistor for Riv.
Is there any advantage using Z-foil or S-foil resistor for Riv over a metal film resistor like 71-RN60C2701B?

I have never used those Resistors but I have used different series of Dale, RA, welwyn etc. I didn't experience any major differences that made me favour one over another. Perhaps the exotic ones may display discernible difference, I don't know. I spent my money on different usb interface, IV op amp and PSU, which produced different results that I can establish my preference easily.

 

[Brijac]

I've seen that some builders of this thread who used Z-foil or S-foil resistor for Riv.
Is there any advantage using Z-foil or S-foil resistor for Riv over a metal film resistor like 71-RN60C2701B?

I use z-foil on pcm63 dac. Haven't tried the rest To me, it's worth the money. To some, probably not.

 

[Tesla Audio]

Hi,
I'm just collecting all necessary PCB's for AD1862. If I/V is already implemented on the main board why we have additional
I/V board mentioned here #6427 (more advanced or..)?
Do I need Post-Filter?

 

[Brijac]

That i/v board in that post is basically opa627 discrete. There are numerous i/v stages you can try. Onboard is opamp i/v.

 

[Tesla Audio]

Any suggestion for I/V ? Tube or opamp or maybe transformer?

 

[Brijac]

Go with onboard first. Use opa1655 and see if you want other i/v solutions.

 

[Tesla Audio]

Anyone tried this Walter Jung PS:
https://www.ebay.com/itm/2552562558...3h5Oh4ILxUkq3/XtSWn5n7MVIZPH|tkp:BFBMpv6GxsNi

 

[altor]

Is there any advantage using Z-foil or S-foil resistor for Riv over a metal film resistor like 71-RN60C2701B?

Yes, you will be proud and self-satisfied!

Alex.

 

[grunf]

Anyone tried this Walter Jung PS:
https://www.ebay.com/itm/255256255871?hash=item3b6e755d7f:g:~MgAAOSw5B9dtk5s&amdata=enc:AQAIAAAA4A5xzowboSVdMiGLEvsOZG9FVsjAOt5+PzHCJR/ttJGw+HYhameImCONrXlwoSxpuIt0qiqd+exnOfcCvC4SgfiNQjZWl+ls0FYLWGFrB8Gfy4nFX2dw22UIR04llwQcGVJFfiVUrq+nS4v+w6EPC9W8n4yzZCg8oRgdG1G9+urxULs/vYIHn8IptQI8h1PlsDk9VHRSze3TRF+BcneoCwhqfl0higbu555myvFSoM1tNW8cuA6THjQvxFlQsCurjcbgLO0KI36VJBIK3h5Oh4ILxUkq3/XtSWn5n7MVIZPH|tkp:BFBMpv6GxsNi

That regulator has nothing to do with Walt Jung, I can only say that it is fraud and unauthorized use of Walt's name.

 

[crymen]

I've seen that some builders of this thread who used Z-foil or S-foil resistor for Riv.
Is there any advantage using Z-foil or S-foil resistor for Riv over a metal film resistor like 71-RN60C2701B?

I played with several resistors and found that the differences are audible. Get a few to play with before spending big $$$.

 

[namghiwook]

Thank you all for replying about z-foil for Riv !

 

[zoom777]

@EUVL @woodturner-fran Thank you so much!

I have made AD797 Custom I/V.
It works very well.

@namghiwook Due to your encouraging posts... Another blue box arrived today...
Sorry I couldn't resist - how do you like the sound of this passive IV versus the active IV ?

 

[Tesla Audio]

Regarding Power Supply. What is better this low noise PSU bellow, based on LT3045 for both 5V and 12V or PSU2

https://www.audiophonics.fr/en/line...-supply-module-2x-12v-5v-33v-25a-p-17612.html

 

[Brijac]

Go for either psu2 or psu1 with lt3094/lt3045 ldo. Psu1 with those ldos should be better, they are well known, and possibly best ic serial regulators for our purposes.

 

[diyiggy]

Murata gj8 is solid if there is a need for more than 1uf in small space 😁

played with them long time ago with amagnetic line : a little better indeed though expensive.