Since there is an e-commerce site in Quanghao's signature, and his board GBs have become a steady venture, there is no logic of group buy essence anymore. There is a vendor forum area being offered by DIYA that the interested parties can ask for. Therefore Quanghao's GB threads are closing. Communicate directly for any outstanding commitments. 
Edit: Quanghao asked and got a Vendor forum of his own, old threads moved here.
Edit: Quanghao asked and got a Vendor forum of his own, old threads moved here.
The bom of DAC-END up date ( DAC-ASH)
Parts List for DAC-END
Resistor Vishay/Dale CCF50 1/4W:
470 Ohm x 1 R39
75 Ohm x 1 R41
680Ohm x 1 R40
Resistor Caddoc MK132:
200 Ohm x 2 R37,R38
Capacitor Vishay/BC
0.1uF/12V x 6 C26,C28,C30,C32,C34,C36
0.01uF x 2 C38,C39 (at digital input), C40,C41
68nF/63V x 1 C37
Sanyo os-con - electrolytic capacitors:
47uF/10-16V x 6 C24,C27,C29,C31,C33,C35
Chip
CS8414 x 1 U3 Cirrus Logic Inc
74HC04 x 1 U2 Toshiba
AD1865 NK, NJ, N x 1 U1 Analog Devices
Socket: 28 pin, 24pin, 8pin
Inductor: 120uH x x 2 L1, L2
Led: GREEN LED x 1
SPDIF: Transformer x 1 T2 Newava Technology S22083 or LL1572
Salas Shunt on The DAC
JFet Toshiba
2SK170 x 18 Q2,Q3,Q5,Q8,Q9,Q11,Q14,Q15,Q17 Q20,Q21,Q23,Q26,Q27,Q29,Q32,Q33,Q35 Transistor
Transistor Fairchild Semiconductor
BC560 x 1 Q10
BC550 x 5 Q4,Q16,Q22,Q28,Q34
Mosfet On Semiconductor International Rectifier (IR)
IRF540 x 2 Q7,Q12
IRF9540 x 10 Q1,Q13,Q19,Q25,Q31,Q6,Q18,Q24,Q30,Q36
Electrolytic Capacitors / Rubycon ZLH
220uf/16V x 6 C3,C7,C11,C15,C19,C23
2200uF-4700uF/25V x 6 C1,C5,C10,C13,C17,C21
Capacitor Illinois Cap & Wima, etc...
0.1uF/25V x 12 C2,C,C6,C10,C14,C18,C22,,C4,C8,C12,C16,C20,C24
Resistor Vishay / Dale CCF50 1/4W
10 Ohm x 6 R4,R11,R16,R22,R28,R34,
47 Ohm x 6 R5,R11,R17,R23,R29,R35
100 Ohm x 6 R3,RR9,R15,R21,R27,R33
220 Ohm x 12 R2,R8,R14,R20,R26,R32,R6,R12,R18,R24,R30,R36
Resistor Vishay / Dale CCF50 2W
33 Ohm / 2W x 6 R1,R7,R13,R19,R25,R31
Led Green Led x 18 L1-L18
Diode VISHAY 1N5819
2A/800V x 24 D1-D24
Trimmer Fairchild Semiconductor
VR 1K Ohm x 6 VR1-VR6
Tranformer
9-12 V/100-200mA x 6
or 9-12 V/100-200mA x 3
Parts List for DAC-END
Resistor Vishay/Dale CCF50 1/4W:
470 Ohm x 1 R39
75 Ohm x 1 R41
680Ohm x 1 R40
Resistor Caddoc MK132:
200 Ohm x 2 R37,R38
Capacitor Vishay/BC
0.1uF/12V x 6 C26,C28,C30,C32,C34,C36
0.01uF x 2 C38,C39 (at digital input), C40,C41
68nF/63V x 1 C37
Sanyo os-con - electrolytic capacitors:
47uF/10-16V x 6 C24,C27,C29,C31,C33,C35
Chip
CS8414 x 1 U3 Cirrus Logic Inc
74HC04 x 1 U2 Toshiba
AD1865 NK, NJ, N x 1 U1 Analog Devices
Socket: 28 pin, 24pin, 8pin
Inductor: 120uH x x 2 L1, L2
Led: GREEN LED x 1
SPDIF: Transformer x 1 T2 Newava Technology S22083 or LL1572
Salas Shunt on The DAC
JFet Toshiba
2SK170 x 18 Q2,Q3,Q5,Q8,Q9,Q11,Q14,Q15,Q17 Q20,Q21,Q23,Q26,Q27,Q29,Q32,Q33,Q35 Transistor
Transistor Fairchild Semiconductor
BC560 x 1 Q10
BC550 x 5 Q4,Q16,Q22,Q28,Q34
Mosfet On Semiconductor International Rectifier (IR)
IRF540 x 2 Q7,Q12
IRF9540 x 10 Q1,Q13,Q19,Q25,Q31,Q6,Q18,Q24,Q30,Q36
Electrolytic Capacitors / Rubycon ZLH
220uf/16V x 6 C3,C7,C11,C15,C19,C23
2200uF-4700uF/25V x 6 C1,C5,C10,C13,C17,C21
Capacitor Illinois Cap & Wima, etc...
0.1uF/25V x 12 C2,C,C6,C10,C14,C18,C22,,C4,C8,C12,C16,C20,C24
Resistor Vishay / Dale CCF50 1/4W
10 Ohm x 6 R4,R11,R16,R22,R28,R34,
47 Ohm x 6 R5,R11,R17,R23,R29,R35
100 Ohm x 6 R3,RR9,R15,R21,R27,R33
220 Ohm x 12 R2,R8,R14,R20,R26,R32,R6,R12,R18,R24,R30,R36
Resistor Vishay / Dale CCF50 2W
33 Ohm / 2W x 6 R1,R7,R13,R19,R25,R31
Led Green Led x 18 L1-L18
Diode VISHAY 1N5819
2A/800V x 24 D1-D24
Trimmer Fairchild Semiconductor
VR 1K Ohm x 6 VR1-VR6
Tranformer
9-12 V/100-200mA x 6
or 9-12 V/100-200mA x 3
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The bom IV stage for DAC-END Composite-Triode 6H30, 6H6, 6dj8
IV stage for DAC-END
Composite-Triode 6H30, 6H6, 6dj8
1. Resistor
R1,R31 = 22R/2W
R16 - R20A = 18K/2W
R32 - R36A = 18K/2W
R22,21,37,38 = 200R
R23,24,39,40 = 470K
R25,26,27,28 = 2K
R41,42,43,44 = 2K
R29,30,45,46 =220K
R52 = 10R
Resistor RELAY
ALL 1/4W
R47 = 220K
R48= 1K
R49 = 5.6K
R50,51 = 4.7K
2. Caps
C16, 22: 47uF/450V
C19, 21 ,24, 26 = 220uF/16V
C19,20,25,26 = 0.1uF
Caps -output:
C17, 23: 0.47 - 1uF/450V
Caps RELAY
C28: 47 - 220uF/12V
3. DS2Y RELAYS 5v X 1
4. Transitor
Q1: BC337
5. IC: LM311
6.Diot: D19, d20 = 1N4007 or better
7.Tube: V1, V2 = 6H30Pi, 6H6Pi, or 6dj8 x 2
8 . Tube Socket 9 PIN X 2
9. PCB I/v stage X 1
Note:
1. All resistor 1/4W or 1W
2. R1, R31: 22R/2W. R16 - R20A use 2W. R32 - R36A use 2W
2. The delay time : 0.45 minutes
Use Tube:
1.Tube 6H6PI:
+B = 270V. R22, R21, R37, R38 = 400R - 470R.
2.Tube 6H30PI:
+B = 230V. R22, R21, R37, R38 = 200 - 220R.
3.Tube 6DJ8 or 6H23:
+B = 200V. R22, R21, R37, R38 = 280R - 300R.
* R16 - R20A = 47K/2W .
* R32 - R36A = 47K/2W.
Parts List Salas Shunt for iV stage
JFet
2SK170 x 1 Q4
Transistor
2N2906 x 1 Q5
MJE 350x 1 Q2
MosFfet
IRF9160 x 1 Q1
IRF840 x 1 Q3,Q15
IC
LT1084, 85 Or LM 317 x 1 U1
Capacitor
220uf/450V x 2 C4,C5
1uf/450V x 2 C2,C3
100uF/25V x 1 C1
4700uF/16V x 2 C10,C11
470uF/16V x 2 C12,C14
47uF/16V x 1 C13
0.1uf/16V x 5
Resistor 1/2W
3.3 Ohm x 1 R7
47 Ohm x 2 R9,R10
200-220 Ohm x 1 R13,R2,R6
6.8K Ohm x 1 R14
Resistor 2W
33 Ohm x 1 R1
5.6 K Ohm x 1 R5
120 K Ohm x 1 R4
100 Ohm x 2 R15,R16
Resistor 5W
56K x 1 R3
Trimmer
2-5 K Ohm x 1 VR2
500-1K x 1 VR1
Led Green Led 3 D2,D3,D4
Diode
Diode 4A x 4 D13,D14,D15,D16
Diode 1N4007 x 2 D17,D18
Diode 2A/800V x 4 D9,D10,D11,D12
Diode Zenner
1n4172
TRANFORMER
SALAS SHUNT 1 0-200-250V/100mA
Filament x 1 0-8V or 0-9V/2A
Heatsink
10W x 2 Q1,Q3
5-10W x 1 U1
Jump
3 x 2
PCB
SSHV x 1 QUANGHAO
IV stage for DAC-END
Composite-Triode 6H30, 6H6, 6dj8
1. Resistor
R1,R31 = 22R/2W
R16 - R20A = 18K/2W
R32 - R36A = 18K/2W
R22,21,37,38 = 200R
R23,24,39,40 = 470K
R25,26,27,28 = 2K
R41,42,43,44 = 2K
R29,30,45,46 =220K
R52 = 10R
Resistor RELAY
ALL 1/4W
R47 = 220K
R48= 1K
R49 = 5.6K
R50,51 = 4.7K
2. Caps
C16, 22: 47uF/450V
C19, 21 ,24, 26 = 220uF/16V
C19,20,25,26 = 0.1uF
Caps -output:
C17, 23: 0.47 - 1uF/450V
Caps RELAY
C28: 47 - 220uF/12V
3. DS2Y RELAYS 5v X 1
4. Transitor
Q1: BC337
5. IC: LM311
6.Diot: D19, d20 = 1N4007 or better
7.Tube: V1, V2 = 6H30Pi, 6H6Pi, or 6dj8 x 2
8 . Tube Socket 9 PIN X 2
9. PCB I/v stage X 1
Note:
1. All resistor 1/4W or 1W
2. R1, R31: 22R/2W. R16 - R20A use 2W. R32 - R36A use 2W
2. The delay time : 0.45 minutes
Use Tube:
1.Tube 6H6PI:
+B = 270V. R22, R21, R37, R38 = 400R - 470R.
2.Tube 6H30PI:
+B = 230V. R22, R21, R37, R38 = 200 - 220R.
3.Tube 6DJ8 or 6H23:
+B = 200V. R22, R21, R37, R38 = 280R - 300R.
* R16 - R20A = 47K/2W .
* R32 - R36A = 47K/2W.
Parts List Salas Shunt for iV stage
JFet
2SK170 x 1 Q4
Transistor
2N2906 x 1 Q5
MJE 350x 1 Q2
MosFfet
IRF9160 x 1 Q1
IRF840 x 1 Q3,Q15
IC
LT1084, 85 Or LM 317 x 1 U1
Capacitor
220uf/450V x 2 C4,C5
1uf/450V x 2 C2,C3
100uF/25V x 1 C1
4700uF/16V x 2 C10,C11
470uF/16V x 2 C12,C14
47uF/16V x 1 C13
0.1uf/16V x 5
Resistor 1/2W
3.3 Ohm x 1 R7
47 Ohm x 2 R9,R10
200-220 Ohm x 1 R13,R2,R6
6.8K Ohm x 1 R14
Resistor 2W
33 Ohm x 1 R1
5.6 K Ohm x 1 R5
120 K Ohm x 1 R4
100 Ohm x 2 R15,R16
Resistor 5W
56K x 1 R3
Trimmer
2-5 K Ohm x 1 VR2
500-1K x 1 VR1
Led Green Led 3 D2,D3,D4
Diode
Diode 4A x 4 D13,D14,D15,D16
Diode 1N4007 x 2 D17,D18
Diode 2A/800V x 4 D9,D10,D11,D12
Diode Zenner
1n4172
TRANFORMER
SALAS SHUNT 1 0-200-250V/100mA
Filament x 1 0-8V or 0-9V/2A
Heatsink
10W x 2 Q1,Q3
5-10W x 1 U1
Jump
3 x 2
PCB
SSHV x 1 QUANGHAO
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Please update us all
Hi When i added my name to the "Group buy list" and payment seems along time ago nobody said e-commerce transfer ? .It would have been better to finish this GB first ? ok end of moan
. Quanghao there are two lists on the go 1746 and 1769 can you please combine and update us all also update on pcb s when do you expect to despatch thank you regards john
Hi When i added my name to the "Group buy list" and payment seems along time ago nobody said e-commerce transfer ? .It would have been better to finish this GB first ? ok end of moan
. Quanghao there are two lists on the go 1746 and 1769 can you please combine and update us all also update on pcb s when do you expect to despatch thank you regards john
Hi When i added my name to the "Group buy list" and payment seems along time ago nobody said e-commerce transfer ? .It would have been better to finish this GB first ? ok end of moan
this weekend i will sent all pcb to you! tomorrow i up dat list member!
Lest wait me please!
Thank you!
yes! alright, i think all member only you not lucky.
It is better you sent me your address one more please?
Thank you many!
Hi!
Tomorrow I will send the PCB to everyone, Hope this time no one who does not receive the same PCB as you've ever been!
Sorry and thanks!
Hi all, To day i sent PCB dac up date to you
When you will get it , reply me please! thank
Stt Name DAC IV
1 OSMAN IALCIN 2 set
2 Fernando Suarez Prieto: 1 set
3 Robert Flocchini 1 DAC
4 neil yeomans 1 DAC
5 Duc Tran 1 DAC + 2 IV
6 Benjamin Dixon 1 set
7 Tie Singhoe 1SET
8 Liu Chia-Cheng 1 set
9 john collin 1 set
10 Damian Barnier 1 iv
11 Ulf Osterbrink 1 set
12 Francesco Parodo 1 DAC
13 Tony Rowland 1 set
14 Davide Parise 1 DAC cu + Salas low
15 John Matchett Phono D3A
16 ENG HOOI LEE 1 set
17 klaus jurga 1 set
18 H F Deinum 1 DAC
19 Ronan Daly 1 set
20 William Breedlove 1 DAC
21 Daniel Beaulieu 1 set
When you will get it , reply me please! thank
Stt Name DAC IV
1 OSMAN IALCIN 2 set
2 Fernando Suarez Prieto: 1 set
3 Robert Flocchini 1 DAC
4 neil yeomans 1 DAC
5 Duc Tran 1 DAC + 2 IV
6 Benjamin Dixon 1 set
7 Tie Singhoe 1SET
8 Liu Chia-Cheng 1 set
9 john collin 1 set
10 Damian Barnier 1 iv
11 Ulf Osterbrink 1 set
12 Francesco Parodo 1 DAC
13 Tony Rowland 1 set
14 Davide Parise 1 DAC cu + Salas low
15 John Matchett Phono D3A
16 ENG HOOI LEE 1 set
17 klaus jurga 1 set
18 H F Deinum 1 DAC
19 Ronan Daly 1 set
20 William Breedlove 1 DAC
21 Daniel Beaulieu 1 set
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