So far I have just two people who listened to the Upsampler in A-B test with the original 44.1/16 version while playing CD. For all of those who decided to go with the Upsampler but are not interested in the Digital Input receiver, I will be able to use the second PCM port of my DAC so you can alternate between the origianl and upsampled version and hear for your self. Until now, most companies were using Analog Devices AD1895/96. This chip is the one built into the DAC modules in Audio Aero too. The AD chip has a control port. The designer has just two choices - 96/24 or 192/24. The chip I am using is the latest deveolpment in the industry and NOT used by any other company on the market today. At least not for now. It is a product of many years research and is absolutely uniquie. It can perform any type of conversion up to 211/24. I am not going to tell you why, but the sonic improvement with this chip is not only because it upsamples. I find that 88.2/24 sounds best with it. Please keep in mind that the CS4398 DAC chips as used in my DAC board, unlike most 8x oversampling DACs on the market, have non-oversamplng digital filter for PCM. Then the PCM is converted to dual bitstream and then is overampled 32, 64 or 128 (user selectable). In the case with 88.2/24 oversampled PCM you get final dual bitstream rate equal to 128 oversampled DSD inside the DAC.
Regards,
Alex
Regards,
Alex

