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Sound Signature: full-range, accurate; true stereo within a single earpiece
Drivers: twin balanced armature drivers for full left/right in single earpiece
Designed specifically for music lovers with unilateral hearing loss (deaf in one ear), the 221 delivers full stereo signal to a single custom earpiece without sonic compromise. Works with any standard portable device, combining left and right acoustically within the ear canal without the sonic compromises inherent in passive electrical summing.
