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quanghao quanghao is offline

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  • Last Activity: 21st June 2017 11:48 AM
  • Join Date: 10th September 2009


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Latest Blog Entry

Posted 18th October 2010 at 08:43 AM by quanghao Comments 0
Posted in Uncategorized
Salas low shunt for DAC,Clock, Pre Phono
Out 1.5 to 5V

Posted 29th March 2010 at 01:33 AM by quanghao Comments 1
Posted in Uncategorized

After the good result obtain with the DAC End I have design with Nguyen Quang Hao a set of boards to create a cheaper project with a sonic performances very near.

The No Oversampling DAC give a more natural sound but if you ear the TDA1541 and TDA1543 seem to lose details.

The AD1865N-K with passive I/V give a perfect combination, natural sound and all the details.

The AD1865N-K give the better performances with a 200ohm MK132 Caddock as passive I/V.

In this configuration the output signal is too low to drive any amplifier so I have design for the AD1865N-K the better output stage.

This DAC use a single ended vacuum tube amplifier without the expensive output transformers used in my original DAC End.

The DAC board follows the original design but has been inserted a jump to switch the phase of output signal.

In any vacuum tube stage the signal on the anode is in out phase...
Recent Comments
Can we buy just pcbs...
Posted 24th October 2012 at 02:10 PM by
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