Ayre QB-9 or Metrum Hex?


I have narrowed my DAC choices. I read good about both. Both have USB 24/192 sampling. I don't think that DSD is a concern of mine at this time. Maybe it should be. thanks in advance.
dpm2340
+1 Ayre Codex DAC.  I also suggest you look at the Ayre Codex DAC.  This DAC has USB and Optical (Toslink) inputs.  It supports PCM 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz, 352.8 kHz, 384 kHz (up to 24 bits), DSD64, DSD128.  I own the Codex DAC and like it very much because if its very clear and musical sound.  It has a very small footprint and costs $1,795.  Please see:

https://www.ayre.com/codex.htm

https://www.audiostream.com/content/ayre-acoustics-codex-usb-dac-headphone-amp-digital-preamp

The Codex DAC is designed to stand up but I have mine laying on its side supported by three Ayre myrtle blocks ($15).  The Codex DAC does get hot and laying it on its side helps with the air circulation.  My retailer recommended this and I like the way it looks.

The Ayre QB-9 DSD DAC has been discontinued and I am not familiar with the Metrum Hex DAC.