Yamaha FX770 Guitar Effects Processor. Rack Mounted Guitar Effects Processor in great condition, powers up ok, UK power plug.The item "Yamaha FX770 Guitar Effects Processor Rack Mount Processor" is in sale since Thursday, April 27, 2017. This item is in the category "Musical Instruments\Guitars & Basses\Parts & Accessories\Effects Pedals\Multi-Effects". The seller is "tech-giftz" and is located in Guernsey. This item can be shipped to all countries in Europe, United States, Canada.