I'm curious as to what the DX240 would sound like with Amp1 MKII compared to DX220 with the same amp. Alternatively, what the DX220 would sound like with Amp1 MKIII compared to the DX240 with that same amp. Of course, as has been the case, I don't expect Ibasso to ever offer Amp1 MKIII as a stand alone purchase. But if a few people who end up owning both the 220 and 240 ever get curious enough to do some Amp module swapping between the two players AMP 1 modules, I'd love to read their impressions. I'm guessing that the largest differences between 220 and 240, aside from cosmetics, are going to be battery life and user interface/ user experience. I think that 9028 pro versus 9038 pro will be more of a selling point than a sonic difference. But that aside, just speaking for myself, if it had to be either the 220 or the 240 that traveled with me on a daily basis, I'd upgrade to the 240 just based on battery life alone (assuming it really is significantly longer than the 220), even if they sounded exactly the same. Portable for me means that I can move around the house with it. I rarely bring a DAP with me when I'm out and about. Otherwise ... the quirks and the sometimes buggy, laggy OS (mainly Mango) of the 220 aren't really an issue for me as I only play music off of the micro sd.
ps. I don't mind thick and heavy DAP's. I also have a Kann Alpha (basically a baby brick) and I actually like the chunk and heft of it (keep in mind that I don't take DAP's with me when I leave the house). Size wise, DX240 looks to be pretty nice. But still, I really do prefer the simpler squared off and kind of industrial look and feel of the DX220 (and 150 and 200). Never liked the look of the DX300. It's not that it would be too big or too heavy ... it's too long (or tall).