The Gibson Sabre Reverb Amplifier was sold as the Farfisa Amp at the dawn of Farfisa’s presence in the United States. Since both Gibson and Farfisa were owned by CMI, the Chicago Musical Instrument company in Lincolnwood, Illinois, there were a lot of crossover. Just like the Gibson organs, and the later Cordovox organs (also a CMI brand) were very similar to Farfisa organs, the later Farfisa branded amps were most likely made by Gibson. Also, the Maestro effects were in there somewhere too.
This 50 watt amp boasted at 15″ speaker and a side mounted 14″ heavy duty mid range driver horn. This beast was designed to fill up the room with sound and help emulate a larger than life organ.