Would anyone on the forum have suggestions regarding fair market value for the following US Amps USA 2000x? I recently purchased a new set of Definitive home audio speakers and am looking to possibly trade rid my old set to a friend for the US Amps USA 2000x pictured below. I've been out of the car audio loop for quite some time and appreciate your feedback. The amp appears to be significantly smaller than the versions I've come across while researching online. There's a white label on the circuit board with the number 47383 on it. Thanks-Chris