Pioneer SC-LX83 Reference Manual page 3

[minamoto]
source/origin/foundation
Collaboration with ICEpower — Direct Energy HD Amplifier
LX83 LX73
ICEpower and Pioneer have collaborated to
develop a unique power module — the Direct
Energy HD Amplifier. Pioneer's technologies
combine with the ICEpower amplifier, which features multiple
feedbacks to overcome the drawbacks typical of class D
amplifiers. This results in overwhelming power, free of distortion.
This year, the Direct Energy HD Amplifier has further evolved —
fine-tuned to every detail including the LPF. The result is
added power capacity which clearly shows in the sound.
Both the SC-LX83 and SC-LX73 are compatible with the
latest high definition audio formats, whereas the SC-LX83 is
also THX Ultra2 Plus certified.
Hi-bit 32/Hi-sampling Audio Signal Processing
LX83
These two technologies work together to create undistorted
sound, bringing out the best in the new 32-bit DAC. The 32-bit
DAC hardware alone does not reproduce better sound.
Maximum performance is gained by applying the Hi-bit 32
processing to expand signal resolution, creating more detailed,
smooth sound, closer to the original analogue signal. Hi-bit 32
also increases the sound pressure for a tactile listening
experience, and the more channels you have, the more
impressive it becomes. It is effective for multi-channel content
on DVD/Blu-ray Disc as well as CD audio, and works with any
disc player. Hi-sampling expands the range of the high
frequencies, providing richly detailed, natural sound.
32-bit DAC
Circuit Board
AK4480 32-bit DAC
Custom Capacitors
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0
-1
0 2m
Effects of Bit Expansion Processing
24-bit Signals
24-bit sine wave
Close up
24-bit resolution
input signals
24-bit resolution
Red: original analogue signals (ideal)
Black: 24-bit digital signals (actual)
Bit expansion processing required to bring out the real performance from 32-bit DAC.
3
A/V RECEIVERS REFERENCE GUIDE
Mica Capacitors by Soshin Electric
Actual Effects
24-bit signal wave form comparison
24-bit Processing 32-bit Extension Processing
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0
-1
4m 6m 8m 10m 12m 14m 0 2m
Time / s
24-bit resolution
Previous
24-bit DAC
32-bit resolution
32-bit DAC
32-bit resolution
32-bit DAC +
Hi-bit 32
Direct Energy
HD Amplifier
4m 6m 8m 10m 12m 14m
Time / s
Previous
DAC alone
makes no
difference
DAC + signal
processing
–> closer to
original signal
(in red)