The diodes which produce {TAIL ~ the coring effect} are biased by a signal which is related to {HEAD ~ the gain control signal} coupled to the device 
The diodes which produce { TAIL ~ the coring effect } are biased by a signal which is related to { HEAD ~ the gain control signal } coupled to the device
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH