DIAMOND
(U.S. patent 5,673,000)
DIAMOND
(
D
ynamically
I
nvariant
AM
plification
O
ptimized
N
odal
D
rive) is an important advance in
circuit design which reduces high frequency distortion. DIAMOND combines the linearity of Class A
operation with the current headroom of a Class B system by operating the MOSFET driver stage with 20dB
or more of current headroom, whereas traditional drivers have only 6dB of current headroom. The result is
a dramatic reduction in high frequency distortion, combined with improved ultrasonic stability.
THE RESULT:
Colorless high frequency reproduction and greater inherent stability.
®
Amplifier
Trans•
nova
(U.S. Patent 4,467,288)
The trans•
nova
(
TRAN
Sconductance
NO
dal
V
oltage
A
mplifier) is a patented circuit that allows the audio
signal to pass through the amplifier at
low voltage
. Each amplifier channel utilizes its own “fully floating”
power supply and is configured to increase power gain. The increase in power gain allows the driver stage to
operate at a lower voltage. A
low voltage
drive stage is the same principle used in high quality preamplifiers
to produce high linearity and wide bandwidth.
The resulting design utilizes an output stage with a simpler gain structure and a shorter signal path than
conventional high voltage (bi-polar) designs. The number of stages is reduced from five or more to three. The
output stage is further refined into a trans-impedance stage (current to voltage converter) to achieve a short
loop (fast) negative feedback. The output stage is driven cooperatively by a transconductance stage (voltage
to current converter).
THE RESULT:
Superior sound quality, greater efficiency and higher reliability.
®
E-I
I-E
trans•nova circuitry
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