Both actually have decent architecture, they are not completely rubbish daps like most of the <$150 daps in this thread (in terms of hardware design, no idea on their UI and firmware).
Both using dual pcb board's for separate digital and analog sections, and trying to implement a good digital audio process; The first dap is using a cortex m4 cpu + wolfson wm8804 with single clock to send i2s to the dac, while the second linked dap is using a cortex m7 + altera cpld with dual clocks to send i2s to the dac. Overall I prefer the digital process of the second dap, but there is no pcb pictures of the first dap's digital board, only analog pcb is shown, so I can't compare other points between them, only their general architecture, and a large part of the audio quality is actually determined by how well the software is interfacing between the cpu and i2s platform, which remains unknown for both.
Both using a good amount of electrolytic capacitors that slim daps can't fit, the second cheaper dap using good sanyo capacitors for power supply and enla caps on the out put, while the $330 dap using unknown caps for the power supply and rifa tube caps on the output (interesting), both using plenty of good model opamps through out.
I like the design ethos of the cheaper one better, but still given it's price there has been sacrifices made, it uses a cheap volume pot for example, you may get channel imbalances when using sensitive iems depending on the gain of the output which isn't mentioned.
The first $330 dap is too much risk, and I'd rather buy an Aune M2 at $350, but imo the second dap at $150 is a decent buy if the software side is any good, as the hardware mostly checks out, much better audio design than all the other <$150 daps mentioned so far. Although I'm not going to buy it because I already have daps that I know will be better than it, but if I only had $150, I would actually strongly consider it.
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