Big fan of using the classifieds (craigslist or what have you) to grab semi-vintage gear cheap.
You don't need a fancy amp, just something powerful enough for your speakers. Your speakers should
- fit the space
- have enough bass, or add a subwoofer
- be placed where you will hear the stereo 'soundstage'
- be less than 20 years old so you don't have to fuss over maintenance like redoing rubber mounts
- be listened to before you buy
