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Here we show you how to disable your erase head for sound on sound recording using pretty much any cassette recorder.
The horizontal 4 track cassette machines were easy to do this with but the technique can be applied to most.
This tutorial demonstrates the process of using a small piece of tin foil to disable the erase head of your cassette tape recorder to allow gapless Sound on Sound recording of tape loops.
The cassette 4 track pictured is the Tascam Porta02 mkII.