FET Audio | Hi-End Audio & Electronics DIY Electronics & Repair

February 13, 2008

X2 – Ver 3

Filed under: Pass Amplifiers — Spencer @ 10:34 pm

This is not a real Nelson Pass X2 as the output use transistors.  This is actually the ver 3 of Cheffdegaar in diyaudio post.

I do not like the sound and may be in future I shall build NP original X2 again.

UGS_V3a circuit

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February 10, 2008

PCM1702 to PCM63 Converter BD

Filed under: DAC — Spencer @ 11:44 pm

This board is designed to use PCM1702 DAC chip (smd type) to replace PCM63 in D1V3.  There is one fault on the pad size of SOIC for PCM1702 (too wide).  Thus soldering of the DAC chip is quite difficult but the board is still able to be used.

Circuit

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