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Quanghao Audio Design Quanghao Audio Design is a producer of DIY Audiophile Kits and PCB boards, selected from many listening tests!

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Old 20th September 2011, 01:59 PM   #2011
antos71 is offline antos71  Italy
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Thank you Quangao!!! Now i'm sure!
Please can i write you in private?

Best regards.
Antonio.
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Old 23rd October 2011, 11:23 PM   #2012
bluewater is offline bluewater  United States
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What is the purpose of paralleled 220ohm resistors in series with the grids signal(on the tube output board). Could I use one 110ohm of high quality instead?
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Old 6th November 2011, 02:24 PM   #2013
quanghao is offline quanghao  Viet Nam
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Originally Posted by bluewater View Post
What is the purpose of paralleled 220ohm resistors in series with the grids signal(on the tube output board). Could I use one 110ohm of high quality instead?
You can use it!
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Old 7th November 2011, 01:55 AM   #2014
ksnider1 is offline ksnider1  United States
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Default http://www.quanghao.com

Is your website running quanghao ? http://www.quanghao.com
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Old 14th November 2011, 05:22 AM   #2015
apelizzo is offline apelizzo  Australia
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Default http://quanghao.com - online shop

Quanghao,

I'm trying to order some PCB boards but I cannot complete the checkout because it says "There is no carrier available that will deliver to this address! "
. Shipping is to Australia. Please let me know
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Old 15th November 2011, 10:19 PM   #2016
quanghao is offline quanghao  Viet Nam
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OLD THREAD DAC End by Andrea Ciuffoli Send a message via Yahoo to quanghao OLD THREAD DAC End by Andrea Ciuffoli
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Originally Posted by apelizzo View Post
Quanghao,

I'm trying to order some PCB boards but I cannot complete the checkout because it says "There is no carrier available that will deliver to this address! "
. Shipping is to Australia. Please let me know
yes i see it!
thanks
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Old 17th November 2011, 11:27 PM   #2017
apelizzo is offline apelizzo  Australia
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Originally Posted by quanghao View Post
yes i see it!
thanks
Well, you are welcome but .... can you send me paypal request or something? Perhaps I would like to purchase those items.
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Old 18th November 2011, 01:23 PM   #2018
quanghao is offline quanghao  Viet Nam
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Originally Posted by apelizzo View Post
Well, you are welcome but .... can you send me paypal request or something? Perhaps I would like to purchase those items.
hi!

quanghao168@yahoo.com.vn! it is my paypal!

thanks
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Old 18th November 2011, 04:02 PM   #2019
antos71 is offline antos71  Italy
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Hi Qhanghao!
I have a question to you. I''m building the Dac End 2 : i would use the 6DJ8. In electric diagram there is a 6 resistors of anodic: R16, R17, R18, R19, R20 and R20A while in pcb there is R15 too. Must I solder a 47K 2Watt resistor also there? Or not?

Thank you.
Antonio.
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Old 18th November 2011, 11:21 PM   #2020
quanghao is offline quanghao  Viet Nam
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OLD THREAD DAC End by Andrea Ciuffoli Send a message via Yahoo to quanghao OLD THREAD DAC End by Andrea Ciuffoli
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Originally Posted by antos71 View Post
Hi Qhanghao!
I have a question to you. I''m building the Dac End 2 : i would use the 6DJ8. In electric diagram there is a 6 resistors of anodic: R16, R17, R18, R19, R20 and R20A while in pcb there is R15 too. Must I solder a 47K 2Watt resistor also there? Or not?

Thank you.
Antonio.
hi!
47K 1W it is for 6Dj8, it is ok!
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