I , for one love my Mimby, and it does have the newest AD firmware chip installed (rev.2). The TEAC, as much as I like having a fully balanced dac, hasn't been getting much use since I received it (it's still in mint condition as well). I've considered an Eitr to possibly step up the Mimby's game a bit, but the Airist Drop R2R dac has me intrigued to say the least. Any suggestions on how to proceed from here? Thanks guys!