For a multiscreen exhibition project, a portable commercial ${1\over4}$-in. tape recorder has been adapted for two-channel stereophonic recording. This modification is described and performance data are given. Synchronous recording is possible with precision oscillators and a frequency-modulated control track system. The location equipment also permits synchronous playbacks, using the recorder's internal batteries as the power source for all auxiliary units. The studio equipment for the transfer of stereo location recordings is also described.