The cassette works, but the sound is not well balanced. Please help if you can fix it. Since I have no specialized knowledge, I cannot explain. Please refer to the images. Since the model number is quite old, please list it as junk. Powered by AA batteries as well. (4-10 days to arrival). For expensive items we recommend EMS. Depending on the size and weight after packing the items. Weekends are not available because post office is closed. International Buyers – Please Note.