I got this in the mail:
Quote:
The green class A
For the first time in history -
true class A runs with high efficiency
Introducing CSS(tm)
the patented semiconductor class A circuit
True.
Over the years, countless attempts have been
made to design true class A circuits with a
reasonable degree of efficiency. None have
been successful.
Until now.
Crystal Sound System (CSS™) is the name of
a new and patented class A transistor amplifier
circuit which combines the high linearity and
accurate sound of class A with the high efficiency
of class AB. The circuit is ingeniously simple
and brings the sonic performance of audio
amplifiers to a higher level than previously
possible, without sacrificing efficiency or
producing excessive heat in the way that
traditional class A designs do.
Due to it's simplicity, the CSS(tm) patent can be
applied to virtually all applications now using
class AB amplifiers, including everything from
integrated circuits to high power public audio,
with only minor alterations to the original
design. The result is a more linear and accurate
sounding amplifier, which puts less stress on the
power supply and reduces high frequency
interference, while retaining the stability and
high efficiency of the original design.
In every product where audio quality is of concern
and an amplifier is present, CSS(tm) can
dramatically help improving sonic performance
without affecting manufacturing cost.
:Endquote

Quote:
The green class A
For the first time in history -
true class A runs with high efficiency
Introducing CSS(tm)
the patented semiconductor class A circuit
True.
Over the years, countless attempts have been
made to design true class A circuits with a
reasonable degree of efficiency. None have
been successful.
Until now.
Crystal Sound System (CSS™) is the name of
a new and patented class A transistor amplifier
circuit which combines the high linearity and
accurate sound of class A with the high efficiency
of class AB. The circuit is ingeniously simple
and brings the sonic performance of audio
amplifiers to a higher level than previously
possible, without sacrificing efficiency or
producing excessive heat in the way that
traditional class A designs do.
Due to it's simplicity, the CSS(tm) patent can be
applied to virtually all applications now using
class AB amplifiers, including everything from
integrated circuits to high power public audio,
with only minor alterations to the original
design. The result is a more linear and accurate
sounding amplifier, which puts less stress on the
power supply and reduces high frequency
interference, while retaining the stability and
high efficiency of the original design.
In every product where audio quality is of concern
and an amplifier is present, CSS(tm) can
dramatically help improving sonic performance
without affecting manufacturing cost.
:Endquote