RMB-1066 to upgrade Cambridge audio 640r

[simonc]

Dear all,

I'm into movies and my setup is -
Cambridge Audio Azur 640r AV Receiver,
Cambridge Audio Azur 640c CD player,
Marantz DV7001 DVD player

My speakers are 4 ohms -
Sonus Faber Domus Concerto Fronts,
Domus Centre and
2 x Domus Concertino surrounds
M&K V125 sub

I'm dissappointed by the vavavhooom from my system and thought I could run pre-outs from the CA604r to a rotel RMB-1066 to better drive the SF speakers but I am worried about the rotel's ability to deliver under the 4 ohm loads of the SF speakers.

Any advice or suggestions would be terrific!!

Thanks.