I am in the market for a small and the most powerful amp. I have tried the E7 so far and it is not loud enough as I am using a source that is very quiet. I've even tried hooking up the E3 and the E7 together and that doesn't cut it either.
It needs to be portable, or it could be a desktop amp it needs to be small enough to be conveniently stored/carried. This is for use in a church with a very minimal setup, and needs to be set up and broken down fast and that's why I would like it to be as small as possible. It needs to be durable also.
It is driving a generic radioshack headphone (which is actually quite pricey, at $23) and sound quality does not matter at all, as it's main use will be for spoken words only.
What would be the cheapest amp that would fit the above descriptions?