sony wm ex oneseventytwo         
 i  don't  know  much  about   this   one 
 because  i  broke  it  instantly. it's a 
 walkman   anyway,   runs   off  of   the 
     standard two double a batteries.     
 it has  a switch for normal tape  versus 
 copper oxide  / metal.  it  also  has  a 
 switch  for something called  avls  (can 
 be    set    to    norm    or    limit). 
 it has mega  bass (on  or off) and dolby 
 nr (on or off)  and two band eq (i think 
         thats the dolby thing).          
 it  does  have  a  speed hole which  i 
 found out about by destroying  it. like, 
 thats how i found out about speed holes.