Stereo audio system, comprising; Sansui integrated amplifier, stereo tuner by JVC, stereo integrated amplifier by JVC, and stereo cassette deck by Pioneer

Stereo audio system, comprising; Sansui integrated amplifier, model A-910, stereo tuner by JVC, model T-V3L, stereo integrated amplifier by JVC, model A-S3 ; and stereo cassette deck by Pioneer, modelCT-1060, as used in the Biosignal Laboratory at the Institute of Psychiatry, London, England, established by Professor Hans Eysenck and Dr Paul Barrett to conduct investigations into the relationship between psychophysical and psychometric measures, 1978-1982.