{HEAD ~ Apparatus} 5, including a band pass filter connected downstream of {TAIL ~ said amplifier} 
{ HEAD ~ Apparatus } 5 , including a band pass filter connected downstream of { TAIL ~ said amplifier }
HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL