I had to buy two additional speakers from ebay but it is working just fine.

sound is great and works perfect

]this units are very nice working on a decent setup any one who wants to have a very nice home theater surround sound needs to know what they want and what they will purchase of course price wise everything changes, i do have myself an extra two front vf-35 speakers and those are amaizing and the sub

Matched these and a Onkyo TX-NR809 and Klipsch's SW-350 and all I can say is excellent work Klipsch!