Of course, your problem could be solved by purchasing a "temporary" unit from a Big Box store and returning it after the game. Your scruples may prevent you from doing this, knowing that once you return the item, the store can't sell it as new, and someone along the sales stream will have to eat that cost. But its a legitimate option that many stores permit you to take advantage of. This will tide you over until the amp/receiver that you really want gets to your door. As a bonus, in the meantime, maybe you can test out a new/different brand amp that you hadn't considered before - who knows, maybe you'll be converted and stick with that amp.