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"I just wish to say that I'm very impressed with the high quality of work you produced in converting my ancient cassette tape ("Joy" by Apollo 100) to CD. The quality, in my opinion, was better than the condition the tape offered! I just wish to say your restoration techniques are terrific (nearly miraculous). Thanks for saving a bit of music I ..."

Test tape

A tape containing a series of test tones at a standard reference fluxivity. The test tape is used to verify the performance of the tape recorder’s playback system.