Got a request to make these for his precious musical fidelity 750k supercharger monoblock power amplifier! Thought they were speakers! He wanted the covers fast so I machine quilted the fabric before joining the top and the sides. At the back of the cover, I cut an opening for the connectors. For the top,I used the left over sashing fabric from my Jacobean Rhapsodies. I am thinking of using the Jacobean theme for the covers too!