I don't think that there is a head unit / amp included with that one. I believe it is just the five speakers and the sub.
I have a JVC 5.1 reciever and it works pretty good for me, it included those same speakers and a smaller sub with it. I ditched those speakers for Pioneer rear surrounds and center channel, some older 15" MTX floor standing front speakers and a 250 watt Cerwim Vega 12" powered sub. It will really rock out now
I will actually be looking to upgrade my reciever soon. The old JVC just don't really cut it. I want something with more connectability. it only has one optical and one digital surround input. I have surround outputs from my Dish Network reciever and my DVD player, and when I buy a PS3 I will want another input so I don't have to switch cables all the time.
Only bad thing is that the one I want will probably end up being a couple hundred bucks just for the reciever.... good thing I already have some descent speakers.
1982 Cutlass Supreme - mild SBC, tons of fun! The summer toy
1996 Silverado Z71 - the hauler
2002 Bonneville SLE - His / project
2003 Bonneville SSEi - Hers / never ending project black mirror