Available as an assembled Module and as a DIY project.
This Module is currently available.
Quad 1-to-3 Distro Amp (YRGB)
MULTB, aka the YRGB Mult, is a Quad 1-to-3 Video Rate Buffered Multiple. Inputs are buffered to provide three identical unity gain outputs per. Using a buffered multiple instead of stackable cables prevents unwanted attenuation as well as potential crosstalk from modules without input buffers.
Input switches are cascaded downward, so using just the first input will provide a user with twelve identical unity gain outputs. Inputs are terminated with a 100Kohm resistor and each output has a series resistance of 499ohms.
https://foxinghour.com/products/multb-quad-1-to-3-buffered-multiple
1 Users are observing this
These merchants probably sell this module. Huh?
Foxing Hour MultB Quad 1:3 Buffered