I used mine on the dog walk tonight, and i had to really push the A818 bass EQ, but I have to say, Ety certainly does know how to do detail (I did have the 4Ps and er6is, and these are cut from the same cloth). I just forgot how nice the 616s sound. The 716s were a pain with the pod, even depodded these have a little more bass. I switched tips to the soft flex mediums, but I may even try them with the UM56 or Complys. Not sure which one will be best, but custom tips might be cool.
My collection is complete, a $379 MSRP pair of phones, a $79 pair of phones, and a $14 pair of phones that don't suck at all. Nice.
Update: The UM56 custom sleeves work extremely well with the 616s, really give the bass a little extra kick, and a little added depth across the spectrum. Anyone who wants to get the best possible IEMs for $14 should jump on this deal. And if you have some UM56s, all the better.