Mythos STS Amp out

Hello, i have a pair of Mythos STS floor standing speakers that were purchased about 7.5 years ago. My left side tower the amp has gone out as the light does not come on anymore and i cannot hear anything from the sub. Def Tech wants $280 to fix it however i am not mechanically inclined and after watching the video i don't think i can actually take out that sub. I am looking for the closest thing to replace it with, would the BP9060 be a good fit? I am not an audiophile so I wouldn't notice some of the things you all would. thank you for the help.