In the 40.00 and under range, have to be working, name brand does not matter(obviously)
i have an old fosgate amp does like 50x2 RMS @ 4 ohms 100x2 RMS @ 2 ohms 200x1 RMS @ 4 ohms i think ill sell it to you for like 20+ shipping.
http://www.wirelesshut.com/0/9867337.html