Available as an assembled Module and as a DIY project.
This Module is currently available.
Leopard (aka 3xA) is a trio of passive attenuators, a simple un-powered circuit using only potentiometers to reduce voltage. Inputs are located on the left side, outputs on the right. Rotating the potentiometer will change the output from 0V to 100% of the input without distorting the shape of the incoming voltage. The module does not draw current.