Receiver amp sections are notoriously lacking in dynamic headroom so I would suggest going up in receiver models until you get to one with pre-outs. Then you could use your receiver to power the surrounds and get a 3-channel amp for your fronts. We have a 3-channel version of our ADA1000

https://www.axiomaudio.com/1000-amplifier

Ian Colquhoun
President & Chief Engineer