Sometime in the future I want to hook up two bookshelf speakers and a sub to my TV. This is in my man room, so don't need anything to fancy. I am using the speakers on my computer with an Adcom 535 amp. I have looked at a few pre amps but didn't see a sub output. Did I just miss it? Is there a better option? Trying to stay around $100. I guess I could always get a receiver and sell the amp. I have always gotten good help here and hope someone can help me on this.