Check out the older amps from the 70's. You can find a great deal on some older Sansui's, Yamaha's, Pioneers, etc... that have massive capacitors and heat sinks. These old beasts weigh in excess of 70lbs, and can be had for under $400. You may even run into some older McIntosh stuff at good pricing for a decent price. You only need 50-100 watts if you find a McIntosh to drive just about anything. You'll see by the weight of the units what type of quality you're getting. Some of the older Yamaha amps were class A, which is very rare.