Blackstar fly103 extension cabinet Turn your FLY 3 into a stereo mini guitar amp or some portable speakers to play music through The FLY 103 is the official extension speaker for the FLY 3 compact mini amp. The FLY 103 comes with its own built-in cable to connect it to the FLY 3, making it a true stereo set-up. The extension cabinet is sold seperately or as part of a FLY Stereo Pack that provides a power supply to power both units. When connected to the FLY 3 is makes a set of portable speakers to play your music through or it can be used as a set of pc speakers or computer speakers. Turns the FLY 3 into a 6 Watt stereo set-up 3" speaker produces true Blackstar tones Revolutionary sonic performance Portable speakers / computer speakers