On Wed, 4 Jan 2006 09:43:45 -0600, "Tim Williams"
wrote:

"Arny Krueger" wrote in message
...
Tubes have always been proprietary parts. OK, you HP 200C has say a
6SN7 in it. Which manufacturer's 6SN7 is the right one to use?

Uh..!? Tubes from different manufacturers are _massively_ better matched
than any two transistors or ICs from the _same batch_!

Utter bull****. In any normal application, IC matching is vastly
superior to valve matching.
--

Stewart Pinkerton | Music is Art - Audio is Engineering