provided by Stan Warren:
about the 300S; both real and imagined.
proto is one of several being considered for production. Reports
from people who have heard it are, therefore, important to us.
I’ll admit to a bias toward transparency. I go to hear live music
whenever I can and I want the stereo at home to get me as close
to that as possible. I know that there is a class of listeners
who prefer to improve on live just a bit with a softer and warmer
sound. If there are enough people who think that way, we will
bend the sound of the 300S a little to satisfy those who write
checks! The customer is always Write! Still, we hope listeners
will give clarity and neutrality a chance to grow on them. It
does, you know. If you live with low coloration and blur long
enough it becomes difficult to justify using your system as a
filter. True, your crappy sources will be obviously crappy. But
the good ones…Wow! Enough philosophy! On with the show.
prototype sent has a 500VA transformer. The production will use
around 700VA, more or less. The proto had primitive source-shunt
regulation of the input stages. Production will elaborate on this
considerably. Proto; power supply capacitors are Jensen four-pole.
Production; the same but bigger. Proto; stock output filter. Production;
we’ll see, probably a better output filter cap. Proto; simple
implementation of linear phase gain block. Production; more refinement
with better drive buffers. Proto; cheap, basic black box for a
chassis. Production; stronger black box with a nice faceplate
and quality connectors on the back. The switching module is from
Hypex. We stripped the input circuitry completely and used our
own. The target price is $2500, for a 150-200 Watt version of
Bandwidth, same as stock Hypex, or about 50 KHz. Noise, A little…not
too much. Distortion, Ditto…about the same as Hypex residual.
Input impedance, 22KOhm Gain, 27dB (industry standard).
We hope this information is useful, and would like to thank Danny
and the participants for their time and trouble. If you heard
our amp and have any comments, please let us know. Chuck Jones,
541/579-1374 Or, www.superphon.com
Park, TX 76367