On 20 Sep 2006 06:56:50 -0700, "Telstar Electronics"
wrote:

+++Frank Gilliland wrote:
+++ That's because I don't make cheap, disposable crap. Never have, never
+++ will. But the use of FET's is at the discretion of the builder. The
+++ amp can be built with either FET's or bipolars. No other modifications
+++ are necessary, just a variation in the initial alignment.
+++
+++Let me get this straight...swapping FETs with bi-polars in the
+++design... and no modifications are necessary???
+++Get real... there are impedance matching issues, possibly B+ sources
+++level differences, as well as well as totally different biasing
+++circuitry. You are going to bias Frank?... right?
+++
+++www.telstar-electronics.com
***********

His modular design will allow for bias network to change versus
technology. Input/output impedances for bipolar and FETS do not differ
that much for equal power out and drive conditions. FETS do tend to be
slightly higher though. Also his output module should be adjustable
enough to compensate for these variances.

james