I will second that, Don't do it. I think people get a little overwhelmed when doing research by all the options, and trying to figure out which ones the best, and then you start building up this assumption that you have to have the QSCs that everyone talks about or it won't sound right. I personally played a few of those mental games at times. However I've found that there are a lot of economical compromises that will get you off the ground with out breaking the bank. I would agree with the KC-150 recommendation I had one during my POD days that worked well. I think I bought and sold it for 150 bucks...
I would also recommend a pair of headphones around 100 dollars and a cheapo mixer. I would take that over a home stereo anyday.
http://www.bhphotovideo.com/c/product/4 ... tudio.html
I've had these headphones since college and use them for work and at home on a regular basis still, best damn 150 bucks I've spent.
Just this weekend I was at my girlfriends place with my axe. I keep a spare pair of monitors (M-Audio AV40s 150$ near field monitors) there which I usually just use for MP3 playback and making her shitty TV sound 10 times better. There quite well suited for that and beat the hell out of most PC oriented speakers. Point being I plugged directly into those for some quick noodling and wasn't expecting all that much out of them. However I was pleasantly surprised (keeping in mind what they cost) at the sound I got.
You really should drop 200-300 dollars on something so you can hear your axe properly. For 300 bucks I'd get...
KRK Rockit 5s There not perfect but they server me well and I see them in many facilities for playback
http://www.bhphotovideo.com/c/product/5 ... 2_45W.html
Cheapo Mixer - I wouldn't buy one of these but it should work fine for anyone starting out
http://www.bhphotovideo.com/c/product/4 ... mpact.html
This is just my opinion, you will find many more on this forum. Get an axe and something that will truly let you hear it and you won't ever regret it. I play at home a lot and have spent a lot of time trying to find my ideal sound for late night headphone practice and scratchpad recording. The axe-fx is the best damn thing I've come across to date.