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K - Sonar on Closeup
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Immediately and fully, the memory of my prior experience with Dr Kay Devices (July, 1971 through February, 1975 while living in the Boston area) was revived within 30 seconds of my switching on the device for the first time. I realized instantly that no tutorials were going to be needed in order to use this device completely and effectively! I located the volume-up, volume-down, and range controls, and their functions were understood intuitively, as were the power converter and power-point adapter.
Mark Blier, Florida, K-Sonar usser