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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 26th June 2010, 05:13 AM   #1
quanghao is online now quanghao  Viet Nam
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Hi all!
After successfully DAC-END, Andrea and I designed a PRE-DAC, dac output, or used as a separate Pre, use tube 6h30, 6h6 ỏ 6DJ8 with the output impedance of around 1.2 K.

Especially I used Salas shunt for HV (SSHV), a PCB would be a perfect PRE including the tube and the source

Perfect for the support of the DAC output without using a rear Pre
You can se cricut and some image!
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Old 26th June 2010, 05:15 AM   #2
quanghao is online now quanghao  Viet Nam
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Old 4th February 2011, 04:31 AM   #3
Strosek is offline Strosek  Canada
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R15 & R31 should it be 22R or 220R??

Thanks!
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Old 4th February 2011, 10:42 PM   #4
John Caswell is offline John Caswell  United Kingdom
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Hi Quanghao,
Is this PCB going to be available to buy and if so how much please?

John Caswell
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