Personally....
Yes for 4 reasons.
#1 it increases the quality of the signal going to the speakers "your speakers quality increases"
#2 It provides more power to you speakers... "they can get louder"
#3 It prepares you for future upgrades to the soundsystem... "speakers amps subs ect"
#4 It brings in integratable options such as bluetooth sat radio sound managers ect...