1U Tile attenuverter
The Att-Vert is an attenuverter in a single tile unit. An attenuverter allows you to scale and and/or invert the polarity of the input signal. The input is normaled to 5V so when the input is unpatched it acts as an adjustable voltage.
http://pulplogic.com/product/att-vert/
This Module is currently available.
Module is a 1U tile
$25