Advanced Sound GT3 Superbass Review: Bass Heaven

I am no stranger to Advanced Sound’s products. The M4, the Model 3, the Alpha, the 747; there are tons of examples to point to in reference to Advanced Sound’s skill in developing unique and well-executed products. The original GT3 was released not too long ago; its release signaled that Advanced was serious about innovating in the dynamic-driver part of the IEM market. The Superbass, the new variant of…