545 is great device for its price. I can put it in best device of medium classequipments. Sound quality is very good. 5.1 inputs are very usefull for home-theatre systems. Dolby prologic decoder is OK but
not very flexible. It has 4 nice and customizable DSP effects on stereo inputs.
I like Onkyo's multi-source, multi-room speaker system. You can select independent record input and outputs while listening and moreover monitoring
on tape-2 input is very very usefull if you have another DSP or equalizer
connected. It's goof for medium sized room with moderate sound level.
If you look for more power you need to look for 838 or 939 models.