... I convinced Vinnie to also look at the Calyx M to see what improvements he could bring to it (like he successfully do the the AK100/120 : "real" line out, new DAC chip, .... ).
Here is what he wrote me:
" I'd love to get my hands on both the Calyx M and the AK240 stock units, compare them. Then see what kind of modding potential they have and which player would sound better after mods.
The question I have to you (and everyone else in the Calyx M and AK240 threads) is what mods would people be interested in? It seems like some want these players to be optimized to be used with an external amp. And some want them to be optimized to be the best all-in-one player?
I'm not sure what kind of space is inside these players, but if the amp output stage can be improved to the level of the best portable amps, then I think it makes sense to focus on that. BUT - I'm not sure how good their dac implementations are. The WM8741 is a better sounding chip to both the Cirrus Logic and Saber chips used by the AK240 and Calyx M - but it uses more power.
I was thinking about how much better these players can be if the battery was removed and an external battery was used. Then there would be space inside for crazy good mods!
I wish I can follow these threads more carefully, but I am so busy. But please let people know they can message me with questions and I will try to respond, and give my honest opinions. And once I try these stock players, I will give my honest impressions on how they all sound in relation to each other. "