Hidizs S9 Pro Plus Review – Martha Hidizs named the S9 Pro Plus “Martha” because “Martha” was the name of the last surviving female Passenger Pigeon, the largest flockingbird species ever to have existed on Earth. After 109 years since the extinction of the Passenger Pigeon, in commemoration of this magnificent species, the professional acoustic brand, Hidizs, has chosen to name their third-generation HiFi Balanced Dongle DAC, the S9 Pro Plus, “Martha.” S9 Pro Plus Martha adopts the fourth-generation professional … Continue reading Hidizs S9 Pro Plus Review