Okay so my bass has been acting up recently. It has occasional crackling from the amp and I can't play it more than 30 minutes without losing sustain and getting this foul distortion sound. I'm almost positive it's a problem with the input. Any idea what's the problem and how much it would cost to fix?
When this happens to me it usually means one of the wires needs to be soldered. Does the wire ever fall out of your input jack?

Unfortunately, I don't know how much it would cost but maybe you will be closer to estimating a cost knowing that it probably just needs soldering.
That makes my life a whole lot simpler. Thank you so much, dude! You have no idea how much I appreciate it.