Opama627 & cover button
Guanghao,
I know what are pin connections for a simple opa627 , but on your IC you have two OPA627 , could you explain to me ?
Br
Jacky
im sory , i not see what do you want wit opama627??
say again please??
thanks
Guanghao,
I know what are pin connections for a simple opa627 , but on your IC you have two OPA627 , could you explain to me ?
Br
Jacky
Attachments
Hi Quanghao,
Please could you answer to the following questions (already sent) :
- where i can buy the cover button for the micro switch on remote printed board (same as yours) ?
- wiring diagramm for your double OPA627 IC ?
Br
Jacky
Hi kmajjo,
You don't have to worry about the wiring of dual OPA627, plenty of ready to use dual to mono opamp PCB adapters on eBay.
Last edited:
I sent you the shield, you please send me $ 10 on shipping!
Thank you very much.
B?u ?i?n Vi?t Nam - VNPost
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you have 4 chasssi faulty due to transportation, I will send to the manufacturer after the finish.
The other ingredients you error, then I will send, hope you wait!
So I've almost completed the first group buy for you!
Sincere thanks!
hi quanghao,
i hope you sent my connectors also.
thanks
Yes thank you!
You are a great motivation for me and Andrea complete the DAC,
You're welcome, you and Andrea certainly deserve the credit.
Your little baby got potential, she is holding the power cord, I think she want to hear the DAC's sound

Guanghao,
I know what are pin connections for a simple opa627 , but on your IC you have two OPA627 , could you explain to me ?
Br
Jacky
The sockets are for fitting a dual channel op amp, thus it follows dual channel op amp's (like AD826 below) pin connections.
Attachments
Last edited:
Hi NicMac,
- Try this TNT tracking number : 759514659
Thanks Domi_78,
I wonder where those extra zero's came from 🙂
I'm sorry, there are errors when typing. I corrected the bill right below:My tracking number (4/NicMac: 75,905,140,659) does not work and also has a different numerical format than that of Andrea (1/Andrea: 759 514 680) that works.
Quanghao, please provide me the correct tracking information.
A. TNT Tracking:
1/Andrea: 759 514 680
2/Masterkey: 759 514 676
3/Myfavoritettthing: 759 514 645
4/NicMac: 759 514 659
5/Matmax: 759 514 662
B. Fedex Tracking:
1/gjorgji: 8034 8573 6354
Please check the goods under the bill of lading number above.
Thank you very much.
Thanks a lot rredline.The sockets are for fitting a dual channel op amp, thus it follows dual channel op amp's (like AD826 below) pin connections.
Br
Jacky
Hello Halook,Hi kmajjo,
You don't have to worry about the wiring of dual OPA627, plenty of ready to use dual to mono opamp PCB adapters on eBay.
My goal is to sell opamp627 on ebay because i will use LL1684 as IV stage.
Br
Jacky
Please Quanghao ,im sory , i not see what do you want wit opama627??
say again please??
thanks
Answer my first question " where i can buy the cover button for the micro switch on remote printed board (same as yours) ?"
It seems not possible to find this type of cover button in EU.
Br
Jacky
Hi Quanghao,
Is there still any chance to purchase now the transformer from you ?
I'm waiting your answer to send you money for shield and, if possible, for transformer.
Thanks
Is there still any chance to purchase now the transformer from you ?
I'm waiting your answer to send you money for shield and, if possible, for transformer.
Thanks
The sockets are for fitting a dual channel op amp, thus it follows dual channel op amp's (like AD826 below) pin connections.
please se it!
thanks
Attachments
Please Quanghao ,
Answer my first question " where i can buy the cover button for the micro switch on remote printed board (same as yours) ?"
It seems not possible to find this type of cover button in EU.
Br
Jacky
may be i can have some button for you!
thanks!
im sorry , now i not have transformer,Hi Quanghao,
Is there still any chance to purchase now the transformer from you ?
I'm waiting your answer to send you money for shield and, if possible, for transformer.
Thanks
The shield, you not need payment to me, this is your gift,
I need only the shipping!
Thanks
Hello Quanghao,may be i can have some button for you!
thanks!
I need 15 buttons , but i can buy more if necessary.
Please add the cost for 6 x dac shield .
Br
Jacky
Hi Quanghao, do you know aproximately when you´ll send my DAC?
Thanks.
Inforsit (Javier Cobo).
Thanks.
Inforsit (Javier Cobo).
Hi Quanghao, do you know aproximately when you´ll send my DAC?
Thanks.
Inforsit (Javier Cobo).
your dac, it is finis DAC, now i test, some day i will sent it!
thanks
Hi, I finally have chance to start connecting my DAC/IV and get it running. At the moment, after updating the firmware in Amanero USB, USB in is working. Also just tested Coax in. Both playing 44.1/16 wav. But the output (at the RCA sockets of IV module), Right side is noticeably louder than left side. Have swapped all opamp and still right hand side louder (probelm is same). Anyone has the same experience, or there is something I have missed? Cheers Herbert
Hi, I finally have chance to start connecting my DAC/IV and get it running. At the moment, after updating the firmware in Amanero USB, USB in is working. Also just tested Coax in. Both playing 44.1/16 wav. But the output (at the RCA sockets of IV module), Right side is noticeably louder than left side. Have swapped all opamp and still right hand side louder (probelm is same). Anyone has the same experience, or there is something I have missed? Cheers Herbert
please check the jum Iv , in the pcb dac and the pcb IV!
or you can teck out all jum IV, run it in the V-out
thanks
Yes thank you!
You are a great motivation for me and Andrea complete the DAC,
Also, this is my motivation to bring enthusiasm for the project, I hope this DAC gives you good sound.
Thanks and best regards
Thanks a lot Quanghao. I've received my DAC in perfect condition. Will try it later today, after connecting my Amanero module.
Great pictures BTW, I have a very similar setting in my home 🙂
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