Originally posted by NOS-4-A2
I'm always a bit dubious about upsamplers - surely they introduce more jitter and are only as good as the interpolation software?
The Monarchy upsampler allegedly also massively reduces jitter. The jury is still not 100% decided on the Monarchy

Yes, I like it, but three things about it concern me:
1). It's upsampling to 96kHz. That isn't a direct multiple of 44.1kHz so there must be some form of interpolation going on and, from a purists point of view, you're getting further away from what was on the CD to start with.
2). How well does the DAC64 cope with a 24bit/96kHz signal? Does it function equally well at all frequencies or was it optimized for 16/44.1? The time delay when using the 4s buffer reduces to about 2s (becuase of the increased amount of data presumably) - is that affecting the buffer's ability to reduce jitter?
3). The DAC64 seems to be running a lot hotter when using the Monarchy than it used to. Now that may well be because we're going through another heat wave here (it's 30deg indoors, even at 22:30 at night

) but it could be the DAC is doing more work.
The proof of the pudding though is in the eating and I want to hold off any final judgement until I get my Teac T1 here. Then I'll do a proper evaluation of whether the Monarchy is really worth having in the chain or not.
Michael.