Keith G wrote:

I've been getting clobbered on eBay on a string of DAC auctions lately and
suddenly had the thought to build summat rather than buy it!! What about a
'valve' DAC kit - anything come immediately to mind, before I start
trawling/surfing...??

You want a complete valve DAC? It would be the size of a house.
Or do you want one with thousands of transistors and a valve as an output
buffer to restore the fidelity?

--
Eiron

No good deed ever goes unpunished.