The output audio signal is then applied to {HEAD ~ a compressor amplifier circuit} for {TAIL ~ application} to the ear of a handicapped user 
The output audio signal is then applied to { HEAD ~ a compressor amplifier circuit } for { TAIL ~ application } to the ear of a handicapped user
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH