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