I have an Integra 9.1 receiver with 130 watts into all channels. I am contemplating an upgrade in either amp or speakers. Anybody have any experience with a higher end AV receiver and upgrading to a separate multi channel amp like Rotel, ATI, Outlaw,etc.. (not high end amp) an using the receiver as the pre-amp. Anybody notice an improvement ? I am mainly looking for in improvement in two channel audio but also a pick up all around for HT. I have Paradigm Studio 100 V1 speakers by the way. Not sure which of the two is the weaker link (speakers versus amp section of AV)?