Gryphon preamplifier can acces
the progammable bias system
manually.
Protection
The unique, non-invasive protec-
tion system offers reliable, fuss-
free protection without compro-
mising signal purity and signal
path simplicity, with no conven-
tional relays in the signal path to
degrade or compress sound.
When DC or HF is detected at
the input, the amplifier mutes
until the error condition is cor-
rected.
The output signal is constantly
compared to the input, so that, in
the presence of a difference
which exceeds predetermined
limits (typically a short circuit
condition), the amplifier mutes
until the error condition has been
corrected or take out the internal
protection fuse. Heatsink tem-
perature is constantly monitored
by a thermistor. In the event of
overheating (temperature must
exced 100° C), the amplifier will
mute. Normal operation will
resume when a safe operating
temperature is reached.
Exterior
Non-magnetic materials are
employed throughout, the only
exception being the mechanical-
ly isolated transformer housing
Which incorporates a special
13
all, the current position of the
volume control determines the
bias setting whether music is
playing or not. In effect, this
means that if the user selects,
for instance, position 21 ( Sonata
Allegro ) on the volume control,
then the bias will increase to
100% ( High BIas ) producing
150 Watts, pure Class A. This
bias level will be maintained
even when music is absent or
when the amplifier or preamp is
muted. If the user turns the vol-
ume control down below posi-
tion 20, the Preamplifier will
automatically instruct the amplifi-
er to Low bias -50 watts of pure
Class A.
Stand-by is selected manually
from the front panel. To leave
stand-by ,you must select low og
high bias on the front panel key-
board.
If Green bias is operational, GB
will flash for 5 sec. in the dispaly
and the amplifeir will automati-
cally adjus bias to mete the pos-
tion of the preamps volumencon-
trol.
While Green bias does not offer
the extreme low power con -
sumption of Class A/B, or even
the low power consumption of
"auto-biasing" systems, it does
offer significantly lower power
consumption without sacrifice or
compromise of even a fraction of
its PURE CLASS A performance.
Antileon user who do not own a
