"Kurt Albershardt" wrote in message


jnorman wrote:

4. what are the primary philosophies of top-end preamp design? ie,
why does a grace preamp sound so different from an HV3

You can read some of Michael Grace's thoughts here
http://www.gracedesign.com/support/tech3.pdf

I'm not saying it's all snake oil, but there's some really hilarious stuff
the

"By terminating the destination end of the output cable with a 300 Ohm
resistor, the load resistance matches the output source resistance to create
a 600 Ohm balanced transmission line. Matching the impedance at or near the
characteristic impedance of the cable eliminates signal reflections in the
wire which greatly improves transient performance and preserves harmonic
integrity. This type of termination is very advantageous for driving very
long lines because it provides maximum power transfer through the cable and
virtually eliminates the effects of cable capacitance and inductance."