and everything worked flawlessly. When digital input the headphone output of my old Kenwood cassette recorder could be used. For this I had the modulation controller set at about three-quarters of the full scale and the baud rate, the maximum recording quality. In addition shone overdriving light emitting diode, but only very rarely happened, and then you had to just take back the modulation controller slightly. The supplied AA batteries do not seem to be of special quality, which is why I operate this unit during dubbing only the power supply me. In other, better batteries that can of course be different. Saved the music cassettes is only on SD memory cards, which as I remember enough 8 GB for more than ten hours of music. After backing up the recorded music from the memory card to the computer and after dubbing the collected MP3 files on a USB memory stick. Now I enjoy the data collected by me in thirty years old German pop with folk songs and instrumental music in the brisk exchange while driving, the built-board computer nowadays unfortunately can not play more cassette tapes, so you can not avoid this little time-consuming work of dubbing.