Hi Quanghao,
As you know I'm still waiting for my boards.... I know we spoke but you asked so I'm posting as a reminder to PLEASE mail me my boards. I've been waiting a LOOOONG time.
I'll let you know once I receive them.....
Thank you
Strosek
As you know I'm still waiting for my boards.... I know we spoke but you asked so I'm posting as a reminder to PLEASE mail me my boards. I've been waiting a LOOOONG time.
I'll let you know once I receive them.....
Thank you
Strosek
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
this weekend i will sent all pcb to you! tomorrow i up dat list member!
Lest wait me please!
Thank you!
Quanghao, please rememer to add me to the list!! I did'nt get my boards from the last group buy as you know.. Just a reminder!! I've been waiting for months now and don't want to be forgotten again.
Thanks!!
Thanks!!
yes! alright, i think all member only you not lucky.
It is better you sent me your address one more please?
Thank you many!
OK Quanghao, I've sent you my address again! Please now add me to the list already! I've sent my address again and also sent many reminders.
Please confirm that you are shipping to me... Parts all here waiting for months now....
Thanks!!
Please confirm that you are shipping to me... Parts all here waiting for months now....
Thanks!!
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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Hi Quanghao, I've seen updated photos of the PCB, but do you have any CAD files of the schematic?
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