The Akai GX-255 is a reel-to-reel tape recorder manufactured by Akai in the 1970s. It is a 4-track stereo tape deck featuring three motors and a direct-drive capstan. The GX-255 has a frequency response of 30Hz to 28kHz and a wow and flutter rate of 0.1% or less. It also includes features like automatic reverse play, sound on sound recording, and a built-in Ferrite erase head. The unit has a sturdy build quality and is known for its reliable performance.