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