Yamaha AVX-2200 DSP (1992) 

 AUDIO INPUTS

   RCA Phono (L/R/GND) x 1
    .....  RCA Stereo (L/R) x 9
   RCA 4 channels (L/R/C/Surround) x 1

 VIDEO INPUTS

    .....  Composite signal (CVBS) x 6
    .....  S-Video (also mini-DIN) x 6

 AUDIO OUTPUTS

    .....  RCA Stereo (L/R) x 5
   RCA 7.1 channels x 1
   Additional Center output (RCA) x 1
   Additional Subwoofer output (RCA) x 1
   Jack (6.35mm / 0.25in) stereo output for headphones x 1

 VIDEO OUTPUTS

      Composite signal x 4
      S-Video (sometimes called mini-DIN) x 4

Provides 4ch inputs for MUSE contents (R/C/L/Surround).

Via the DSP modes, surround can be expanded to feed 5 front speakers (Left, Front Left, Center A, Front Right, Right) and 2 surround (Rear Left and Rear Right) with an additional/optional Center B.