Ayre Acoustics KX-R Twenty.

Ayre Acoustics writes: "Here is a peek at the KX-R Twenty  left and right channel Variable Gain modules in progress. We posted a KX-5 stereo Variable Gain module a few weeks ago to compare to. Each channel in the KX-R is loaded with 120 resistors; 60 for each phase or 240 total… Just one of the reasons why each channel takes lots of time and love."

"Each KX-5 Twenty preamp variable gain circuit channel gets 46 resistors, and each one is engaged by a silver to silver, solder-less contact, by way of an electric stepper motor to select the specified volume position."