@cqtek you asked me to comment on the Serenade X in the discovery thread. I didn't ignore you, but don't really know what to reply. Rather than taking that thread off topic I thought Id reply here.
I've always been a portable guy, so this is my first foray into desk top gear. My philosophy being that my gear should fit in with my listen requirements rather than me having to change my behaviour to use my equipment.
Recently my best couple of daps died and I've changed jobs so will be office based. Ideally I'd have spent a few $K on a new dap, but financially that isn't an option at the moment. So, I was looking at cheaper solutions for use in the office. I tried a few cheaper daps at my local store, but they didn't really satisfy me, so I ruled that out.
This lead me to looking into compact desk top solutions, but they all require a source and I don't want to use my phone or laptop for that. Then along came the Serenade X and your comment on the Zen Can; exactly what I was looking for.
I've rambled on and not really told you anything yet, so I'll say it now. I really like this combo. It massively outperforms some more expensive daps that I have tried, but I have no experience in desktop setups to offer a comparison to those. I've only been using for a few days, so my opinions are still forming and I'm still waiting for a 4.4mm balanced connector to arrive to unleash it's full potential.
Sound wise it has really good soundstage width and depth (I've never been able to get my head around height), seperation is good. I'd need to do a lot of ABing on detail retrieval to comment on that, which realistically isn't going to happen in the office, but it strikes me as being respectable levels. There is good treble energy, but whether that is down to detail or the brighter/reference tuning I couldn't say. I generally have chosen the warmer side of neutral in the past, so the Zen Can helps to keep the Serenade X in check.
The Serenade has mseb, which I haven't tried yet for any serious listening, so has the potential to alter the tonal balance if not quite to taste. It also has a normal multi band EQ, which again I haven't tried.
The hiby software is not comparable to the usability of android, but is functional and I've not come across any issues. Connecting to wifi and streaming user accounts is a bit clunky, but only needs to be done once, so not a big issue. There can be a bit of lag when using the inbuilt screen, but not a big issue or particularly frustrating.
I haven't used streaming services, as I like to listen to music I'm familiar with and own at work to avoid distractions rather than create them. I suspect that this side of the software may be an issue for some in usability.
I'm using a 512gb flash drive. Scanning the drive to build the database takes a long time. The first drive a tried was a tiny SanDisk, but I don't think it was quite long enough, so the connection was an issue.
I've used the hiby link app before and it works well here for selecting and playing the music stored on the USB drive.
All the files on my USB are flac. I've noticed some stuttering at the start of 24bit files where the X seems like it can't buffer quick enough, this could be due to me having gapless playback enabled.
For reference I have been using the set up with close back modded HD6xx, B&W P5, Shuoer S12, Tipsy Ttromso and KZ DQ6s so far. All have paired well compared to my experience with them previous devices.