Is it possible to get these dacs with a home trial period?
Showing 12 responses by cal3713
@nonoise Indeed. I just don't buy the pure measurement perspective pushed by ASR, but it appears that this dac measures quite well and is a real technical achievement:
@cd45123 I'm still naïve in regards to the Holo products, but I've had the Directstream DAC in my system (posted on agon) twice for extended periods. It just never worked for me. My theory is that some people (and systems) are particularly sensitive to phase coherency and that something about the DSD's processing is influencing phase. Whatever it is, that product sounds like it puts the music into a blender to my ears. I was so happy to find a R2R dac (the Audio Mirror T3-SE) that eliminated whatever was happening and just sounded so much more natural to my ears. Clearly other people with different ears and systems are having a *very* different experience with the DSD. I'll note that I had a PS Audio PWD II for many years and loved it. I downgraded back to it the two times I tried to move on to the DSD.
Thanks George. I was just reading about the Directstream and the designer was discussing how they paid special attention to phase preservation, so perhaps that's not the source of my issue. Perhaps it is just as simple as being bit-perfect (although I haven't really had that issue with other non-bit-perfect dacs).
I think he's just referring to the AK4137 chip that handles all upsampling. But you're right that the standard r2r modules are still involved. See below:
"The oversampling is done by AK4137, ‘OS PCM’ converts the input stream to PCM no matter it is PCM or DSD, then send to DAC. ‘OS DSD’ converts the input stream to DSD no matter is is PCM or DSD, then send to DAC. ‘OS’ over-samples the input stream. If it is DSD input, it over-sample to DSD256. If it is PCM input, it over-samples to PCM384K or 352.8K ‘NOS’ does no oversampling. send the input stream directly to DAC module.'