Cyrus 8 DAC - Sub PCB schematic diagram; Power supplies, connectors and headphone amp

LRCLK
1
BCLK
2
DATA
3
MUTE
4
XCLK
5
RST
6
Vdd
7
DGND
8
AGNDF
9
VccR
10
AGNDR
11
VOUTR-
12
VOUTR+
13
VCOM
14
VccC
15
AGNDC
16
VOUTL+
17
VOUTL-
18
AGNDL
19
VccL
20
VccF
21
ZEROR
22
ZEROL
23
MSEL
24
MDO
25
MDI
26
MC
27
MS
28
IC801
PCM1791A
MCK
LRCLK
BCLK
SDATA
DAC_CS
SPI_CLK
SPI_DATA_IN
C805
47uF/16V
DGND
C804
47uF/16V
C811
100nF
C803
47uF/16V
C810
100nF
DAC_GND
DAC_GND
ST801
STAR2
DGND
DAC_GND
SPI Mode
DGND
/SUB_RESET
+5V_DAC
+3V3_DAC
C801
47uF/16V
C809
100nF
+5V_DAC
3 2
1
IC802A
OPA2134AU
C813
1n C0G
C815
150p 100V
R801
2k2
R802
2k2
R809
8k2
R810
8k2
R805
3k9
R806
3k9
C816
150p 100V
5 6
7
IC802B
OPA2134AU
C814
1n C0G
C817
150p 100V
R803
2k2
R804
2k2
R811
8k2
R812
8k2
R807
3k9
R808
3k9
C818
150p 100V
DAC_GND DAC_GND
R815
75R
R814
75R
C819
33p
C820
33p
AGND AGND
C806
47uF/16V
C821
22n
C807
47uF/16V
C822
22n
-15V_AN
+15V_AN
AGND
AGND
+15V_AN
-15V_AN
DAC_LEFT DAC_RIGHT
75k BW Bessel.
2.0Vrms Out
C808
100nF
C812
100nF
+5V 16mA max (192kHz input)
+3V3 28mA max (192kHz input)
C802
47uF/16V
DAC_GND
Panasonic
EEEFC1C470P 105deg
RP801
100R * 4
RP802
100R * 4
DAC_GND
R816
0R
AGND
D/A Converter
Cyrus 6 DAC, Cyrus 8 DAC amplifier service manual Issue 1© Cyrus Audio Ltd Jun 2014
Sub PCB schematic diagram
47