Originally Posted by wwwebb1
The product specs for the BTA10250D talk about an Optional Speaker Level Output so that you can add a passive tube. Is the Optional Speaker Level Output something you have to buy? If so, I can't find one.
No, you do not have to buy the speaker level output. The speaker level output is included and is a useable option on all 250D Tubes. It is as simple as purchasing a passive Tube and connecting the brown and yellow wires from the harness of the 250D to the terminals of the passive Tube.