Pioneer SC-LX901 Product Reference Manual page 5

Multi-Channel Stereophonic Philosophy
Separate Design for Analogue Small Signal
LX901 LX801
Dedicated ICs are lavishly used on the circuit in pursuit of ideal
sound. The Op-amp IC for processing small signal is set apart
from the amplifying section to prevent mutual interference. This
allows clear signal to be transmitted to the Direct Power FET.
Additionally, the Rubycon chip film capacitor MU 25p further
reduces the influence of residue noise from the high power
section.
Rubycon Chip Film Capacitors MU 25p
Optimised Audio Parts
High- High-
Performance Performance
Pre-amp Pre-amp
Op-amp IC Op-amp IC
Audio Audio
Output Signal Small Signal Small Signal
Section Section
Audio Signal Input
ESS SABRE Ultra DAC
32
LX901 LX801 LX701
The highly acclaimed 192 kHz/32-bit ESS
SABRE Ultra DAC (ES9016S) is adopted
32
to deliver exceptional sound, with ultra-low
distortion and high signal-to-noise ratio. It offers jitter-free
performance for an astounding audio reproduction with rich deep
bass, bringing out the full potentials of Pioneer's Direct Energy HD
amplifiers.
ESS SABRE
ESS DAC SABRE 32 Jitter Reduction Performance
10 ns Square (10 Hz) Jitter, 12 kHz @-20 dB Signal
Typical
DAC
With Jitter With Jitter
Without Jitter
-140 dB
Jitter level lower than
previous DAC even
with jitter.
ES9016
With or Without Jitter
-150 dB
Optimised Audio Parts
Direct Power FET
Gate
LPF
Driver IC
High
Power
Section
Output
32
-140 dB Line
-140 dB Line
768 kHz/32-bit AKM DAC (AK4458)
LX502
The AV receiver features AK4458, a 768 kHz/32-bit premium audio
DAC from AKM (Asahi Kasei Microdevices Corporation). With the
latest low-distortion technology, the DAC provides detailed and
clear sound, ideal for Hi-Res Audio playback. The 32-bit digital
filter creates natural and detailed sound.
Low ESR Custom Capacitors
LX901 LX801 LX701 LX502
Low ESR (Equivalent Series Resistance) custom
capacitors are adopted to improve the S/N ratio.
PML MU Capacitors by Rubycon Corporation
LX901 LX801 LX701 LX502
The polymer multi-layer MU capacitors (PML MU)
co-developed with Rubycon Corporation provide
clear and open high-range sound.
NJM4585 Op Amp by JRC
LX901 LX801 LX701 LX502
The NJM4585 operation amplifier co-developed
with New Japan Radio Co., Ltd. features low
distortion and high-resolution reproduction
across a wide bandwidth. These selected parts
bring out the full potentials of the Direct Energy
HD Amplifier.
Low Leakage Flux Power Transformer
LX901
The power transformer features minimum leakage flux, ensuring
low noise with increased S/N ratio.
Horizontal Leakage Flux Comparison
0 (360)
120
330
30 30
100 100
80 80
300 60 60
40 40
20 20
270
240
210 150
180
5
AV RECEIVERS REFERENCE GUIDE
Previous power transformer
SC-LX901 power transformer
60 60
90
Pioneer specified coil is placed 4
inch from the power transformer,
and the inductance voltage in the
120
coil is measured.
* Image may differ from actual
product