[Soekris discrete R2R DAC?]

On 4/21/2022 at 11:07 AM, kevin gilmore said:

i've been saying that the switches in a r2r dac were a real problem for many years now. especially the ttl versions.

the teac ud-701n is the cheapest ($4k) of the esoteric dacs that use custom and hand matched switches. I expect that better switches will be the new big deal in the next couple of years.

 

The Soekris 2541 calibrates itself on startup, to compensate for any small differences in switches or resistors

[grounded grid]

I'd like to build a KGGG, but am having trouble finding a schematic.  Have looked in the zipped repositories, but perhaps I don't know what it's called there.

Also, would someone be willing to share a recent BOM for the amp boards? Don't need PS ones.

Thanks!

[kgst]

Nice build, Matthew-Levi!

I'd like to do something similar; can you share your BOM?

Would you go with the same transformers again rather than a toroid?

Thanks!

[Blue Hawaii Special Edition]

thebrunx, what was the solution?  Perhaps better heatsink insulators?

Thanks!