Alesis TapeLink USB Single Cassette Deck "fidelity" Questions

Playback slows noticably after several minutes I have a Teac V-770 cassette deck, and love its fidelity and functionality because of 3 heads. Lately though (and I haven't played it a whole lot in the ...

...and press start it does start but stops right after Hi there! A good cleaning will help with the fidelity of the machine but if I understand your problem then it can only be that the machine needs ...

...but doubling it will double the playback frequencies, making incapable of reproduction with any fidelity. Frequency Response (-20dB recording) Chrome tape 40-15000Hz (±3dB) Normal tape ...