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"I just wanted to let you know that I was very satisfied with the CD you made for me from a really old album my husband had. It is very clear and without background noise - he almost misses all that hissing. He was so excited to have it and couldn't believe I had found a place to transfer the music by looking on the internet. Thanks again,"

Bias frequency

The frequency of the applied bias signal. Generally, about 150,000 to 180,000 Hz.