Available as an assembled Module and as a DIY project.
This Module is currently available.
Dual Signal Leveler Model 172 clone
Dual Signal Leveler Model 172 clone.
La Sesenta y Siete 172 Dual Signal Leveler consists of two high-gain, constant-output amplifiers. Output signal levels are maintained at 0db (plus or minus 1 db) for input variations from -40db to +10 db. Time constants are variable from .05 to 5 seconds.
These merchants probably sell this module. Huh?