Esoteric K-01/K-03 Owners

Information on its even heftier K-01X single box
brother is at:

http://www.esoteric.jp/products/esoteric/k01x/indexe.html

Furthermore, Esoteric has a free HR Audio Player that can be downloaded at:

http://www.esoteric.jp/products/esoteric/hr_audio/indexe.html

Many thanks as usual, Guido.

I just downloaded the HRA player to my K-01 and the installation was a breeze. Upon installation, the upsampling option defaults to ORG (no upsampling) while the digital filter option defaults to OFF.

The improvement in sonics over my previous coax connection via the iFi iLink usb-spdif converter is significant in every parameter.
When I compared the default ORG and OFF to the other options, there was some degradation in SQ. So I went back to the default as Esoteric meant it to be for optimal SQ.

If one has a very high-end usb-spdif converter compared to my pedestrian iLink, your mileage would of course vary between the coax and usb connections. I have to qualify here that my usb connection from the pc is via the iFi iPower and double-headed Gemini cable which separates the usb power from the audio signal. I did compare with and without the iPower again after installation of the HRA Player and came away much happier with the iPower in the chain.

All K-01/03 owners who are into computer audio owe it to themselves to try out this free download.

Happy listening!

I have not heard about this in the USA. Can the DAC be upgraded in the K-03. I like my CD collection and have no plans for streaming or downloading music.

Hi Phillyb,
I hope to persuade you to try out HRA with your K-03 in which you have invested a substantial sum. I am not a dealer but just another hobbyist who has simply discovered and experienced the joys of HRA.
As the cost of the K-03 comes with the usb input and hirez DAC, you would be missing out on a lot of its other capabilities, esp with HRA.
This little experiment will come at very little additional cost. First, get an audiophile grade usb cable-the Audioquest Pearl usb cable is a rather affordable point to start with. Then download the free HRA player, install it and then, go to the HD Tracks website to download their free samples of hirez files.
I am quite confident you will like what you hear compared to CD.
Cheers!