IgosDuIkanaHey the TA-02 guy. This might be a good option considering the O2 can only deliver 88 mW and this can deliver 120 mW. It isn't Fiio E09k level of power (destroy your cans maybe? at full volume according to some), but it does deliver good low distortion power. <--basically what the new VMV lineup from SMSL is meant to do.