Not suitable for each device

Actually a good idea to listen to music with an old cassette player MP-3. But that does not work well with any device. I wanted an old car radio so that "upgrade", which sits in a vehicle with H-plates. The Radio (Grundig) is quite high and normal cassettes also sound very good, you can hear the drive barely. I put this one cartridge, so is the sound (if the cassette "snaps") also good, operation via the remote controller works well, but was a not taken into account in the development: The band tension is a higher rate of "tape spool" and a slipping clutch accomplished. This cartridge offers but no resistance and the tape winding runs in such high gear that the tremendous amount of noise power. You can hear so very loud music, otherwise you can hear only the running noise of the drive. I tried the cartridge on several cassette players. It is not going anywhere so loud. So it depends on the type of device. The volume can greatly depend on the device. Sometimes this cartridge is too low and there is a lot of noise if you raise the volume.
So only limited use.