this is the most effective way because av amp can't handle most nice sounding speaker that well , a higher grade av amp was even more expensive than marantz pre(10k) ,thats why .... play active ones
if u really want av amp ,u may consider anthem mrx700 or onkyo 5010,both around 17000. or u may also add a little to avc-a1hd av amp for around 40k
but if u have 60k -80k ,u can add power amp as well