I've been wanting to get a WM1A as an upgrade from an old Cowon D2+ but I am not sure if I should pull the trigger on one now or wait till Sony releases a new model in the near future. The reason I ask is because it seems like the 1A was release a while ago (I think 2016?) and in my head it...

Can anyone tell me the difference between the k240s and the k240 acoustic versions. I've been wanted to get a pair but didn't know which one is better. I mostly listen to rock, classical, and jazz.   Thanks in advance!