That Door

 

The door on the top panel of the Rhythm 1.1 gives you easy access to your tubes.

Two 12au7’s are beneath it, and you don’t need a screwdriver or anything else to get at them.

To change tubes, just press on the little hand, and the door opens.

 

Tube door on the Rhythm 1.1

Tube door on the Rhythm 1.1. Door is in chromed steel. Always turn off power amplifiers and Rhythm 1.1 before removing tubes.

Tube door on Rhythm 1.1 preamplifier

Close-up of tube door in anodized grey aluminum.