Welcome all of you.
Quanghao thank you very interested and loved by my PCB design.
So quanghao permission open group buy for the PCB due quanghao did, with the design of Andrea - quanghao. And some projects ....
First of all, I would allow the top management, the manager of the forum topics diyaudio, allow me to put this topic at the group purchasing, kindly request you not to move this group to the place of purchase of I at diyaudio.
And now.
I would like to introduce a new design:
A. IV tube for output DAC chips balanced with the features and options:
1. Using the chip DAC output voltage as: ES9018, CS4398, FN1242, WM8741, WM8741 AK4397 ..., AK4397
2. Simple design, easy to carry.
3. Use high-voltage power supplies have a very small source impedance of about 0.001mR, small source interference.
4. Use 12Au7 and 6DJ8 tube.
5. Input and Output balance unbalanced,
with my sound described as follows: very bright treble, and detailed, Mid-clear audio sound, clear, bass is full and deep. The sounds very lively space with music filled the room.
I am very happy with the sound of HQ-IV tube, and I love it more all IV - DAC but I did.
B. High Voltage Regulator for tube preamli and phono
HQ-HV power supply
1. Design a very simple, common components, inexpensive
2. very small output impedance.
3. Interference small output range: 1 mV.
4. Flexible Voltage Regulators 100V to 350v
5. The largest current consumption: 100mA
This is designed, as I and Keantoken undertaking, he has run the simulation and I have tested, tested, tested. Quanghao sincerely thank you!
Please see the circuit and supporters.
Thank you
Quanghao thank you very interested and loved by my PCB design.
So quanghao permission open group buy for the PCB due quanghao did, with the design of Andrea - quanghao. And some projects ....
First of all, I would allow the top management, the manager of the forum topics diyaudio, allow me to put this topic at the group purchasing, kindly request you not to move this group to the place of purchase of I at diyaudio.
And now.
I would like to introduce a new design:
A. IV tube for output DAC chips balanced with the features and options:
1. Using the chip DAC output voltage as: ES9018, CS4398, FN1242, WM8741, WM8741 AK4397 ..., AK4397
2. Simple design, easy to carry.
3. Use high-voltage power supplies have a very small source impedance of about 0.001mR, small source interference.
4. Use 12Au7 and 6DJ8 tube.
5. Input and Output balance unbalanced,
with my sound described as follows: very bright treble, and detailed, Mid-clear audio sound, clear, bass is full and deep. The sounds very lively space with music filled the room.
I am very happy with the sound of HQ-IV tube, and I love it more all IV - DAC but I did.
B. High Voltage Regulator for tube preamli and phono
HQ-HV power supply
1. Design a very simple, common components, inexpensive
2. very small output impedance.
3. Interference small output range: 1 mV.
4. Flexible Voltage Regulators 100V to 350v
5. The largest current consumption: 100mA
This is designed, as I and Keantoken undertaking, he has run the simulation and I have tested, tested, tested. Quanghao sincerely thank you!
Please see the circuit and supporters.
Thank you
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I need 30 PCB for product
1. adeveza :1PCB
2. apnneto :1PCB
30....
Thanks
I need 30 PCB for product
1. adeveza :1PCB
2. apnneto :1PCB
30....
Thanks
Please count me in for 3 full sets of PCB, thanks
And to be re-confirm, it have also balanced output? I don't see on the schematic.....
And to be re-confirm, it have also balanced output? I don't see on the schematic.....
Last edited:
There is no kit and the answer is on the first page, the topic is not very long to go through so far
Merry Christmas
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Merry Christmas
Sent from my ONE A2003 using Tapatalk
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