Lastly, {TAIL ~ the amplification circuit} amplifies the input voltage to produce {HEAD ~ the amplified voltage} 
Lastly , { TAIL ~ the amplification circuit } amplifies the input voltage to produce { HEAD ~ the amplified voltage }
OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD