ProtoDAC TDA1387 X8 project

[hifinet]

A bit more on the Caddock TF020 as I/V resistors:

Caddock TF series: I think this is a discontinued series. Places like Percy Audio have these. "Excellent alternative to the more costly Vishay S102 [TX2352], and preferred over the S102 by some..." and "This is absolutely the most transparent resistor Caddock manufactures and ideal for ultra critical applications where the best possible sound is required." Listed at $6.95 USD each, so much less expensive than bulk metal foil.

Another possible candidate are the new tantalum nitride thin film SMD resistors by Vishay (PNM), Yageo (NT series) and Stackpole (RTAN series). Currently there is very limited availability of resistances, but they are very inexpensive (<$1USD). Shinkoh of Japan previously made through-hole tantalum resistors. Now Audio Note makes them, but they are fairly expensive (but still less than metal foil).

I think the Z-foils (TX2575) will be hard to beat.