{HEAD ~ a first amplifier} configured for amplifying {TAIL ~ the data} received from the first I/O port and outputting the amplified data to the second I/O port; and 
configured for amplifying
{ HEAD ~ a first amplifier } configured for amplifying { TAIL ~ the data } received from the first I / O port and outputting the amplified data to the second I / O port ; and
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH