USB connection only mono

What you expect from a cassette Digital Converter with jack and USB port?
That you can digitize cassettes without additional aids ... maybe not with super quality, perhaps with limited life, at the price.
But one thing is clear: It is expected that the audio signal is digitized in stereo.

But does not it, when you connect the device via USB. Is not a word in the product description here.
If this "detail" also mentioned in the many positive reviews? Forget it.

Therefore, for those who like me have two ears and cassettes in stereo: Finger away from the product.

(With a jack to jack plug and when using batteries can then digitize already stereo. But for the purpose of you can actually use any tape player with headphone output, need not to buy this product.)