This Module is currently available.
Signal Amplifier
A signal amplifier module, i.e. you can make a signal louder/stronger. There are 2 separate circuits in this module, with a maximum gain of 15-1.
https://wiki.aemodular.com/pmwiki.php/AeManual/2SIGNALAMP
These merchants probably sell this module. Huh?
Included in 19 Racks, 12 are public: