impedence convertor

does any one know of a device that plugs into the speaker socket,which i take to a tape recorder,as im fed up with flv to mp3 convertors that want file names that i cant find,and asking stupid questions most claim one click the mouse and hey presto.
but its bull****.
said convertor needs on output of around 1 k ohm to match the mic input of recorder which is the nominal input for the majority of shoebox tape recorders.
if my hands werent so shaky i could build one but time marches on and cant hold a soldering iron anymore.

ps dont get old as its a curse

HOW TO RESOLVE THE IMPEDANCE MATCHING PROBLEM

many thanks for that,have had a look and saved the diagram,fits in with a matching device i used to use on valve equipment.oddly enough got a sale catalogue from maplins today with a usb matcher for records and tape which converts to mp3.