Several years ago I was using a preamp that allowed me
to set the channel balance by nulling the right and left
channels together while using the balance control. This
perfectly adjusted channel balance not only improved the
imaging but also seemed to bring the overall sound into
a much sharper focus and clarity. The system seemed to
have a much clearer, more open sound. But as soon as I
changed the volume, even slightly, I lost that perfect
focus and balance because the volume control could not
track evenly. So every time I changed the volume, I
would have to re-balance the system. I purchased several
"high end" pots and installed them in the preamp, but
the nulling feature in the preamp showed me that no
matter how costly the pot, it would never come close to
keeping the right and left channels perfectly balanced
at every volume setting.
The next step was to build a
stepped attenuator with hard wired resistors. Although this
solved the tracking errors of the volume control, it was
cumbersome to use and I found that when I wanted to set the
volume, the next higher setting was often too loud while the one
below it was too soft. What was needed was a stepped attenuator
with many more than the usual 32 steps. But a switch with that
many separate steps was not available. That led to the
development of the 125 step attenuator that is used in all
Placette Audio preamps and volume controls.
This incredible attenuator has
125 steps of volume control. It tracks so accurately that the
output from both channels is always perfectly balanced at each
and every volume setting. It's easy to use and the IR Remote
Control was added as a standard feature.
Building these controls using only
the very costly Vishay S102 resistors was the final touch
that allowed these volume controls to perform with an almost
startling clarity. It has to be heard to be believed. Nothing
else even comes close. Unless you have heard your system with a
Vishay resistor volume control, you have not even come close to
hearing the full potential of that system.
An easy way to confirm this is to
listen to any source with it's own volume control and play it
directly into your power amp. Then, play the same source again
but use it's line output and control the volume with the
Placette Vishay attenuator. The difference will be a revelation
to you. This is why all Placette Audio products are sold with an
in-system trial. The improvement is not subtle. Hear just how
good your sources really are!
Guy Hammel |