Module is a 1U tile in Pulp Logic format
No info about availability.
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.
These merchants probably sell this module. Huh?