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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 7th December 2015, 11:53 AM   #31
minde7706 is offline minde7706  Lithuania
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Hi.
Did anyone have IV stage schematics with horizontal tube? as per picture.
Thank's
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Old 10th December 2015, 01:07 AM   #32
flocchini is offline flocchini  United States
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Default Case

Quanghao

Anything on the availability of just the case?

Thanks

Bob
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Old 10th December 2015, 01:10 AM   #33
quanghao is offline quanghao  Viet Nam
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Quote:
Originally Posted by flocchini View Post
Quanghao

Anything on the availability of just the case?

Thanks

Bob
yeS!

about 100 $.

so, about 2 week i will have all
thanks
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Old 9th January 2016, 11:17 PM   #34
jackm is offline jackm  New Zealand
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Join Date: Jul 2009
Hi My Friends,

I have just paid for the DAC END 24, now need to buy the AD1865 chip for it.

Could you advise how to get the REAL AD1865 ?

thanks alot and happy new year!

Jack
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Old 16th January 2016, 11:18 AM   #35
prinzinio is offline prinzinio  Poland
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Could someonei advise what is the purpose to use the 3.3v supply on the board to power up amanero? Can I omit usb power supply this way?
Is there a feature to fully power up amanero using dac end psu?
Please advise



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Old 17th January 2016, 01:16 PM   #36
flocchini is offline flocchini  United States
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I assumed, probably incorrectly that connecting the 3.3V jumper on the DAC END 24 board enabled power to Amanero. The USB power is not connected because when shutting the DAC 24 board off the selector lights are still on. Don't know if this helps

By the way I have connected the DAC End 24 to the output circuit of DAC End 2 (E182CCs with Adamas yellow led mod and associated PSU) - sounds really nice
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Old 22nd January 2016, 08:35 AM   #37
jackm is offline jackm  New Zealand
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I have received the DAC-End 24, it sounds really good.

Them I added 2nd AD1865 chip to the board on top of the 1st AD1865 chip making them paralelled, it sounds even better, it can drive my pre-amp directly without tube output stage.

Now I like DAC-END 24 better than my ESS9018 with output transformers.

Regards
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Old 22nd January 2016, 02:36 PM   #38
flocchini is offline flocchini  United States
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Really interesting
Did you just solder pin to pin?
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Old 22nd January 2016, 02:36 PM   #39
flocchini is offline flocchini  United States
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I am still curious about the 3.3V jumper -it's function
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Old 22nd January 2016, 06:48 PM   #40
jackm is offline jackm  New Zealand
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Quote:
Originally Posted by flocchini View Post
Really interesting
Did you just solder pin to pin?
I did NOT parallel the following pins because they are the not used in the design or related to the OPAMP inside DAC:

Pin: 2,3,22,23,6,7,8,17,18 & 19

The 1st AD1865 chip is in the original socket on the board.
I did not solder the 2nd AD1865 chip, I just put 2nd chip on top of the 1st chip, like a stack, with the above not connected pins free on the 2nd chip.

Happy modding.
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