Fast – Easy to Use
Floating Point Coprocessor
Extensive floating point support,
GPS input, FFT, 12-bit A/D, matrix
operations, user-defined functions.
32-bit IEEE 754
SPI or I2C
DIP- 18, SOIC- 18
2-16V In, 4-8W / 150-200VDC Out
0.95" x 0.95" x 0.35"
$9.95 (Shipping included)
Unicorn Electronics, Inc.
For all your components needs
I.C.’s, Transistors, LEDs, Capacitors
Obsolete & hard to find
800-824-3432 Fax 724-495-7882
FEEDBACK continued from page 11
Let's face it. Science dictates that when things get old,
they wear out (decay). Rubber gets brittle, magnets get
weaker, and so on. Things almost never get better with age.
I had an acquaintance who worked at the high-end stereo
shop in town back in the '90s. They sold amplifiers in the
$5,000 to $10,000 range. For a mere additional $300 to
$500, they would apply custom modifications to your new
purchase. They would replace the power cord with one that
had larger diameter wire, replace the filter capacitors with
ones of larger value, and replace the bridge rectifier with one
that had a larger current capacity. He told me, of course, that
increasing these values would improve the amplifier's
response on peaks by reducing drop-off of the supply voltage.
All true statements, technically.
I asked him about these amplifiers and he said they were
the finest amplifiers on the planet made by the finest
companies in the business. So I asked him, "Are you telling me
that the finest companies in the business are making products
with substandard line cords and inadequately sized power
supply components? This contradicts your statement that
these are the finest amplifiers on the planet." He said they
became the finest when the custom mods were applied.
Snake oil! When I told him the brand of components I used,
he said "Oh that's not Hi-Fi. You have Mid-Fi!" Ha! A little
knowledge is sometimes worse than none at all.
While the mods may deliver an improvement it is unlikely
the human ear could hear it. It's possible even instruments
could not detect it. You would assume a high-end amp had
adequately sized components by design.
Unless you perform a strict double-blind listening test, you
can never assume that an improvement is real. You know, put
a blindfold on your eyes and put the component behind a
screen. You are not even allowed to see the size of the
speaker cabinet, the company logo, or any other details such
as the size or color of the wire. This is so your mind is not
tricked into selecting the bigger cabinet since bigger is always
better, right? You can't go wrong with science.
March 2010 77