DACs that upsample to DSD internally?

Xrayz - One last thought - what software are you using to stream?

I use iTunes for Library Management (only), but I use Audirvana to actually stream the data in the file to the DAC.

Audirvana bypasses all of the apple code that is normally used for streaming - WHY? - because Apple actually messes with the data file before sending it across the USB link and Audirvana has an option to send just the raw data.

Using Audirvana improved the fidelity and details considerably, but you have to set it up correctly - the user manual is very good.

Audirvana will also play DSD files (so I'm told) by converting them in real time on the computer - NOT in the DAC.

Audirvana also caches the entire track in memory before it starts to play, so there are no delays in playback waiting on network and hard disk processing - just straight down the USB pipe!

Regards...

xrayz 
Why? I just want to try DSD. Maybe I won't like it at all, I don't know. That's the only reason, and probably the only reason all us on here try different equipment.

 That's fine, but listen to real dsd (native), not pcm that was converted to dsd and called "high rez". 

Trouble is there's not much to choose from in real native dsd in the way of music
.
And if you really want hear High Rez, DXD (which is done in pcm) it sounds stunning, but again no music to choose from, and it should be played back through a Multibit dac, not a dsd or delta sigma dac.

Cheers George

PS Audio Directstream, EMM Labs, dCS are ones I can think of.

PS Audio makes the iconic and hugely popular DirectStream DAC. This DAC converts PCM TO DSD and outputs (as do all DACS) via analogue through your preamp. Spectacular results that produce analogue like results. I run Nodost cable from my DAC to my Krell Foundation and stream high res files from my music server, a Mac Mini. I use Pure Music software that attaches itself to iTunes and takes over as the music player. The music is, well, not only BETTER than analog but kind of like a musical heroin. :-). 

Thanks to everyone for your answers!