This is the connection scheme for a SEGA SC-3000 Cassette interface and SEGA SR-1000 jack plugs.

Input of SC-3000 must be connected to output SR-1000 and vice-versa input of SR-1000 must be connected to SC-3000 output Plug type should be a mono jack plug 3,5mm.

The following is the pinout scheme for audio mono/stereo jack plugs. This plugs have different signals for PC mic plug and PC Earphone plug.

You can use almost any other Tape recorder which have these plugs. And this Unit can be used with many other systems. If you want to plug PC Audio out or Mic jack to your SEGA SC-3000 you need a different type of cable to obtain best results. The PC jacks have a stereo interface which is a little different from mono jack.

You can plug PC to SC-3000 Cassette interface with a Stereo to mono cable for loading tape dumps, or to save directly from SC-3000 to PC. Remember to turn off all 3d audio effects that may damage the quality of signal. This is a typical stereo to mono cable to use for best results.

in PC stereo jack both tip and ring signal must be connected together. In mic PC stereo jack only the tip signal must be connected to the mono audio signal.