What to do with dead equipment

Sell it for parts cheapish or get it fixed. There is probably an audio tech near you that knows his sh.t. It’s not rocket science so doesn’t necessarily need to be the manufacturer that fixes it. Don’t throw it away unless you like to throw away money. 

I have a local guy that’s done an Odyssey amp I blew up due to my dumbassness and added a preout to my tube integrated. Fairly inexpensive. 

Sell the amp “as is” and hope a DIY hobbyist picks it up and attempts to fix it.  

Too bad BAT won't take it as a partial trade for a new preamp. They built it so they should be able to fix it and resell it!

Sell it deeply discounted for “parts”. The market by individual buyers can be surprisingly broad and brisk. Good luck.