How do you dub cassette to cassette - Audio Players & Recorders

You can use a dual cassette but their transports 90% of the time are junk. Transfer of a tape degrades the signal ever copy so you want to use a deck of high quality to do the duplication. I have done this many times and had 21 cassette decks hooked together at once- I was a Technician at Teac so I got a lot of decks cheaper. The copies can be good if you use the right equipment. Usually the line out of the source deck goes into the Line in of the recording deck. The levels can be adjusted on the output of the play deck or the input of the record deck. It is not that hard to do.

Hi
If you have a dual cassette deck, then one deck will only play cassettes,whilst the other will have a record facility as well.
Basically you need to place the original cassette in the play only deck and the target cassette in the record/play deck.
Start the playback in the play only deck and immediately press the record and play buttons together on the record deck. Some decks have high speed dubbing but this varies so much that you will need to consult your manual for this.
Cheers