Update on Nov 12, 2009:
Since the Jfet IV of the DAC should be upgraded to K369BL to gain sonic performance, thus this is completed on Nov 12, 2009. See the last two photos. Some measurements are done after this modification using AP-2522. Distotion is about 0.5% but surprisingly, the listen test is quite smooth due to high 2nd harmonics. See FFT measurement below.
Last update on Sept 6th, 2006:
This is the second kit I do on TDA1541. Since I only buy the PCB, I can add the Jfet IV for this DAC to test out the overall performance.
It use CS8412, SAA7220 4 times oversample filter, TDA1541 DAC. The pcb come with a op-amp IV or tube IV but I am not using it at all.
The final version is with Jfet IV + B1 buffer and a volume control. The target is to drive a power amp from this DAC+Preamp all in one set. Due to the limitation of TDA1541 performance, the overall result is not as good as the Lite DAC-50 with Jfet IV.
