These little buggers keep on fascinating me. Just saw this one and i noticed it had a equalizer! Is this common? Or.. what?

That is a very nice walkman! , I
love philips walkmans, I have a few myself!

A equiliser is rather common on walkmans, I have
at least 5 or 6 ones with one one it!

Most brands did a version with one.

But Aiwa the most I think

Love equalizer walkmans. Most sound pretty darn good. Nice looking Philips, especially new in box.