Receiver Amplifier Great Bang For The Buck! Which One Produces Great Sound?

Which one produces great sound? - receiver amplifier great bang for the buck!

generates more noise? AV receiver or amplifier power?
Yamaha RX-V3900 (AV receiver) or an amplifier? Yamaha is 7.1 and 145watt/channel. And if I like the amp 145/watt/channel that produces buy more noise? primarily only for the music !!!!!!!! 145watt/chan Yamaha may occur during the 7-channels of music playback? I've heard that not on all channels, as specified in the specification occur. Is that true? an amplifier is that lik? I've heard that a precise watt amplifier channels .....?????? AV receiver can produce tell u what?