I just picked up a near mint Kenwood CP-J7 complete with headphones in a beautiful Titanium color.  This unit had to be made by Aiwa.  It is amazing, however it has some unique options I have never seen one any other Walkman.  There is a Button labled S.P.S.W some soft of sound processing thing on the remote and then on the unit itself there is a lever that has 2 options "out door" & in door?!  Any one have a owners manual to this unit?  I would love to read all about this option.  Usually Aiwa walkmans from the 90's are my favorite but this one has kinda moved in to 1st place and I got it cheep.  Carrying case is a little rough, Kenwood logo is missing, but the guy had it still.  Love to find a boxed unit,  Anyone???

Thanks,  Bryan or Marty McFly 

Here's a copy of the manual. Hope it helps!

The S.P. switch looks to be a sound/ signal processor to give different sound fields..