Has anyone experimented with switching the Havana

I thought the same also, upon inspection my DAC had the PCM56P chips. So after a little research I discovered that the -K was a better sounding and more linear chip. Once in place though, there was an immediate difference in my system, difference being a more inviting soundscape and sound.

I'd be curious if anybody knows any similar inexpensive tricks to try for the mhdt Paradisea or Constantine DACs?

Yes, it is not the chip model that changes. It is the grade of the same chip. The ones in mine originally were "L" grade. They can be bettered by the "J" grade and the best is the "K" grade. They are the same chip but when they are made they are tested and sorted by performance.

Hi Jd_df,

Also, I found these chips at a couple of other sites including ebay but they are about $17.00 ea. I'd love to get 4 of them for $20.00!

Thanks again,

Greg

Jd_df,

My previous post prior to the one above did not show up for some reason. I went to (outsource.net,) but it sends me to a different website (outsourcetelecom.com) instead and it doesn't look like this company would sell chips. Is this the correct company? Like I said above, I did find the chips a couple of places at $20.00 each.
Thanks,
Greg