BS or Not BS?

[Thomas P.]

Doesn't seem possible to me that an electrical current would care if it's in a copper wire, or on a copper trace.

If you would have posted that at a decent "high-end" forum they would have been all over you!!

Anyway, the point to this kind of questions is that it can't be answered because there are many effects that participate at different currents and frequencies. And quite a lot producers of cables and other ausio equipment are using this to make a fortune. They are telling about things like "skin effect" and pure silver conducters, "breaking-in of cables" and so on. The thing is (to my knowledge) non of these claims have been prooven scientifically and those producers aren't trying to (obviously!).

But as a guideline: Most of the features claimed on ebay (or other commercial places) about certain audio gear are just dirty lies!!! (Apparently some people can sleep better knowing that speaker cables cost 1000$.)

Just because on technique or another sound different (or better or worse) doesn't mean that it is technically superior (or inferior). It's just different - some like it some don't.

my two cents

[Thomas P.]

So what makes a PCB poorly designed and prone to oscillation?

http://focus.ti.com/lit/an/slod006b/slod006b.pdf#search=%22texas%20instruments%20%22opamps%20for%20everyone%22%22

This is really a great source on electronics which everyone here should read! As for your question: Chapter 17

Regards

[Alex C]

I'm reminded of reading an article a while back that explained where to wire what, and layout placement, and wires to and from etc. It was all over my head then, probably still is.

Was it this?
http://geofex.com/Article_Folders/lead_dress/lead_dress_in_tube_amps.htm