Welcome all member since I started doing the group buy is now, who did not get the PCb I sent it?
Regardless of reason, by me or by post, would you let me know, I plan to do and sent again to you, would you honestly tell me!
Thank you and hope you always loved the PCB design by me!
Respect
quanghao
Regardless of reason, by me or by post, would you let me know, I plan to do and sent again to you, would you honestly tell me!
Thank you and hope you always loved the PCB design by me!
Respect
quanghao
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.
Ok! the PCb is good??
The RIAA , Andrea have new RIIA, in the my Cricuit! I test New the RiAA is better!
I have calculated 2 set of values for the RIAA.
The first was to work at lower impedance to get vey low noise but this mean higher capacitors value so only MKP can be used.
The new set of value allow have higher impedance and allow to use Jensen paper oil and silver mica capacitors.
At this time I don't have tested the new values.
Quanghao have build both the versions and he prefer the new as sound.
The first was to work at lower impedance to get vey low noise but this mean higher capacitors value so only MKP can be used.
The new set of value allow have higher impedance and allow to use Jensen paper oil and silver mica capacitors.
At this time I don't have tested the new values.
Quanghao have build both the versions and he prefer the new as sound.
