ADVANCED M5-1D: Big leap Advanced (ADV) is back at it again with the premium line up, the M5 series. Currently two models have been officially released, which are M5-1D and M5-5D. Memories are a bit vague, but I recall them also working on 8D and 11D when I visited their booth last year. 1D has a driver configuration of 1DD while 5D is 4BA+1DD and each of them priced for $399 / $599. As someone who’s been into ADV IEMs, I … Continue reading ADVANCED M5-1D Review: Big leap