Upgraded my receiver from a Yamaha to a Denon, received my Denon today, I was geeked up to get it going, after removing my Monoprice Affinity banana plugs, I noticed something wasn't right, after closer inspection, I seen that two of the banana plugs stripped off the post and the other two actually stayed in the speaker terminals which now I cannot remove. This is very worrisome because last week I purchased two of their 10 inch monolith subwoofers, after 3 days of use, one went bad, I am still waiting for a return authorization. I called customer service today about the cables, they stated to send them back for a replacement, that does me no good as I am not going to use them, and their still stuck in my terminals. The cables are very good looking, but they are junk, lesson learned. I attached a photo for reference.