a cushion means for cushioning the second input transducer, the output transducer, and the frame structure away from the ear, and for impeding the free flow of air parallel to {HEAD ~ said same plane} between the ear canal and {TAIL ~ the pickup surface} of the second input transducer 
between
a cushion means for cushioning the second input transducer , the output transducer , and the frame structure away from the ear , and for impeding the free flow of air parallel to { HEAD ~ said same plane } between the ear canal and { TAIL ~ the pickup surface } of the second input transducer
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH