what can i say its awesome . I have a older panny commercial plasma which have no speaker . last week i fried my Samsung HT system -lrb- do not ask -rrb- which be the only audio out in my set up . do a quick web search for budget mind audio solution and be lean in sound bar direction , and than i stumble on this gem . feature set this thing provide will cover all my need for foreseeable future . tone of input and video output , ARC , and expendability to 3.1 or 5.1 be great . set up be quick and easy , it be up and run in 10min + another 10 for sound set up . the sound : now this be where i be go to rate it 4 star or even 3 star -lrb- i have to say i be a bit disappointed at first -rrb- in 2.1 set-up its sound ok , not great , but ok ... i fine tune it , but i be not get exactly what i want . also in 2.1 you do not get most of the system audio processing feature . the biggest issue be dialog be wash out by fx sound . watch movie in the evening with kid asleep i constantly have to adjust the sound ... not good . I do my research and pick up Yamaha ns-c210bl center channel speaker -lrb- take a while to find 6ohm speaker , Onkyo be rate at 6ohm do not forget that , 4ohm can possibly fry it , 8ohm will cut power output in half which be already on the low side at 25w per channel -rrb- ohhh what a difference center channel make . it sound perfect , dialog be full and easy to follow even in action heavy scene . with center channel attach i now get most of the audio processing feature . Vol set 55-60 it feel my large living room with double height seal with out any issue . if you have this run in 2.1 drop everything and go by center channel , you 'll be blow away . with addition of center channel + good feature set i rate it at 5 star UPDATE : pick up new Panasonic 55st50 and connected Onkyo to it via HDMI cable to Pannys HDMI -lrb- ARC -rrb- port . thanks to Panasonics Viera Link and Onkyo 's RIHD the 2 work together like a charm . when i power up my tv it automatically turn on Onkyo and send audio to it . MAJOR WAF CUDOS . wife and parent have issue use Harmony one , now they can pick up fio remote turn on tv and the rest be take care of ... with harmony more than often they would press power and drop remote on the couch b4 it have a chance to fire of all command result in all sort of problem : wrong input\/not power up device\/etc ...