I have one of these arriving Friday. Note the 15w/1w switch to the left of the input.
https://www.monoprice.com/product?p_id=611815&msclkid=7ace75578f3b1550c9fa119d097470c2&utm_source=bing&utm_medium=cpc&utm_campaign=Shopping | All Products | Monoprice&utm_term=4580565447217773&utm_content=All Products
Worst case? I replace the Celestion with a Blue Back.
I did it the same last month with my own $75 voucher.
I wonder if there will be a new item this month that I can use my $75 voucher for. If not at the end of the month, I'll offer up mine in the style of this thread.