Having decided not to join the drop at this stage (decided a truly wireless pair would be a better way to spend my money as I’m cycling into work pretty much every day of the week now) I will be interested to hear how this turns out. I have said cable and I theorised the same as yourself so I’m very interested to see how that pans out
Oh man, I'd never go "airpods-level" wireless if I was biking or doing physical activities out in public. But that's just me!
After a few hours with the planamics barely burnt-in, I'm impressed with the driver's capabilities. I've got the SPC 2.5mm balanced cable and spiral dot tips into the Shanling M5s and my desktop rig. Firstly, I love that smooth sound. The bass is punchy and tight, and the treble, while recessed, is very smooth. The driver's coherency when it comes to imaging and soundstage makes these the best technicalities I've heard in an IEM from MEE. It's not actually planar fast, but it's faster than a lot of dynamic drivers I've heard.
I do think the tuning is a bit too forward on that 4k peak. If it were up to me, I wouldn't cut the midbass that much, I'd also roll off that 4k peak a bit closer to where 2k is at, and I'd boost the treble from 8k on up just a couple of dB to bring more air to the sound. Even just rolling off on that 4k peak a bit helps the tuning sound more refined, bringing that mid-treble transition closer in line to both the mids and the treble. The Shanling EQ doesn't really change the sound much, and/or the planamic doesn't take to EQing well either. Still, if MEE and Massdrop can experiment with other materials and designs, the planamic could have a pretty exciting future for more listening tastes.
Edit: A few more hours later, I'm just EQing out that 2-4k peak by 1-2dB now and leaving everything else alone. Honestly, it's sounding great. I like that the treble is relaxed. I could probably handle more treble without hurting my ears, but I don't really need it. They don't sound dark to me.