This quarterly report by the Educational Products Information Exchange (EPIE) analyzes cassette sync recorders, giving parameters for evaluation and laboratory test findings. The report offers evaluations of the compatibility of different models and the standards for audio and cue tones. It also discusses national and international standards, EPIE tests on cue tone and audio performance, acoustical and safety testing, and American National Standards Institute (ANSI) standards applied in EPIE laboratory tests. The last half of the report supplies laboratory test findings for individual models, including a general description, basic data, test results, laboratory evaluation of the test, and construction, service, and alignment. (Author/LD)