Ah, interesting.
I have to confess that I didn't even know there was a Metrum Quad DAC! :doh:
There are size measurements in the Hifi Critic Octave review and mine is 2cm shorter than the 24cm quoted in the review, so I guess mine is a Quad?
No wonder it sounds crap! [emoji38]
The PSU box is the same 22cm depth - so they made 2 sizes of Octave PSUs? Weird.
The eBay seller thought it was a pukka Octave -
https://www.ebay.co.uk/itm/Metrum-Ac...72.m2749.l2649
I'm fine with it, it sounds great. Although I am now curious! :)
I've done a bit of a Google search and haven't turned up any Quad/Octave sq comparisons although there are some very positive words about the Quad. What are the differences that you heard, Lawrence?