In general, with balance XLR, the voltage is different and higher than RCA (start from 4V compare to RCA from 2V) therefore the volume is more louder and better SNR, dynamic range. With A6,A8 and Wiim, setup them to a good pair of monitor speakers( flat freq), it will tell a different ( sold my Pro+ already)
Unfortunately, I don’t have Eversolo-DMP A6 to compare but I owned DMP-A8 instead. In term of sound however, even my A8 is still lack behind my main setup with Holo May DAC, or my 2nd dac Gustard A26 (ak4499). 3rd with Denafrips Pontus 12 and last with Loxjie D40 Pro ES 9039MS pro (A8 does better sound than this one in some areas). My wife loves A8 because of beauty and easy to use. If Wiim Ultra releases early, I won’t give her A8. ultra has a little nice screen as well
Back to the topic, It’s very unfair to compare Wiim to Ever solo or with separate DACs (higher tier) but I think Wiim is a great value product and to get the job done.Toe to toe, it could possible beat my cheap Dac SMSL Su1(4493s) and definitely win them with ton of features like EQ, Stream, Pre . It designs for easy going music listeners, all-in-one solution. I hope one day it could upgrade the DAC, then it will become a true killer.