Guys i have 2 satellite speakers and one passive sub of my yamaha HT Lying idle and i dont use it. Now i want to attach this 2.1 setup to my other tv. But i dont want to spend much so wont get receiver. Now my real questions are here. What are cheapeat options of amp i have to make this system work? I dont want a great setup. Average system will do for me. Also i have heard of class d amps? Are they any good? TIA