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I use the front panel power switch of the
DAC to turn it on, then I switch on the
CD player. This is the best method.
Try different power cords.
While we have implied, time and again,
that the Power Plant is impervious to
line conditions, that claim is not 100%
correct. The small gray area has to do
with input power cords, which seem to
make a sonic difference. Try using the
PS Power Link, instead of the supplied
power cord. The Power Link will make a
beneficial sonic difference.
Do NOT use an extension cord on the
Power Plant.
Do NOT use an extension cord on the
output of the Power Plant, if this can
possibly be avoided. There is no dan-
ger of any kind, but an extension cord
might degrade the performance of
what's plugged in.
Do NOT use an outlet extender (to
add more outlets) unless that exten-
der has NO protection or
The use of ANY filtering on Power Plant
outputs will defeat its purpose. This
means that you should never attach a
power conditioner, filter, or power device
of any kind to an output of the Power
Plant.
Do not use a power conditioner
on the Power Plant's input.
We do not recommend the use of a
power conditioner on the input of the
Power Plant. This may or may not
affect the quality of power coming out of
the Power Plant. To date, our experi-
ence has been a rather negative one
with respect to this matter.
Experiment if you wish, but please
assume the worst.
Mixing analog and digital
audio/video.
We believe that it is OK to mix digital
and analog devices on the same Power
Plant with good results. In fact, the
results are better than with any other
device we have ever encountered. But,
is this the ultimate no-compromise situa-
tion? No. It is best, in a cost-no-object
situation, to separate digital and analog
signals, as well as video, into separate
Power Plants.
Theory of operation.
The Power Plant is a regenerative AC
synthesizer. It accepts the AC wall volt-
age of either 120 volts or 220 volts AC.
The AC is then stepped up (or down) to
143 volts AC to allow enough headroom
for the voltage-regulation element of the
Power Plant. Step up/down is accom-
plished through the use of a balanced
input transformer.
Multiple and redundant 4500-volt MOV's
are placed across the primary to offer
surge and spike protection.
The AC voltage then passes through a
50-amp diode bridge for rectification,
and is then filtered by a bank of 3300-
filtering.
mfd 100-volt capacitors. This forms the
DC power supply.
The DC power supply, producing plus
and minus 103 volts DC, is then applied
to two power amplification stages.
These amplification stages are class AB
power amplifiers, featuring an input dif-
ferential pair, gain stage, driver pair and
multiple outputs.
The power amplification stage is fed by
a DSP-based sine wave oscillator
whose input frequency is microproces-
sor-controlled and selected via the front
panel buttons.
Sine wave generation.
Near perfect, low distortion sine waves
are generated by a custom-designed cir-
cuit. This generator is constructed with
a microprocessor-based sine wave look-
up table, feeding into a 12-bit D to A
processor, which outputs into an analog
filter to remove the sampling frequen-
cies. The sine wave generator is capa-
ble of 0.03% distortion levels, total THD
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