If you have read my previous entry about QLS QA-550 SD Card Player, probably you still remember that I plan to upgrade the clock. Well, finally my TentLabs Low Jitter...... Read More

I need some small inductor for my DAC power supply section, but finding appropriate one is not an easy job. I have found several ready to use inductor, but whether...... Read More

There are not many options to go with NOS DAC. One is TDA 1541, and the other is AD1865. Some says, the TDA is better (at least the S1), meanwhile...... Read More