How Do I Use My Headphones on a Vintage Stereo?

Are you used to headphones that work with a Smart Phone or MP3 player?  Do you want to use the headphones from your cell phone on a full-sized stereo?  It's easy to use 3.5 mm headphones on a traditional stereo receiver.  All you need to do is get a 6.35mm (1/4 inch) Male to 3.5mm (1/8 inch) female stereo jack adapter.

1/4 inch male to 1/8 inch female headphone plug adapter - CAD Rendering by Jeffrey Scot Leonard, J. S. Leonard Electronic Publishing (Own work) [CC BY 3.0 (http://creativecommons.org/licenses/by/3.0)], via Wikimedia Commons

Best of all these little 1/4-inch Male to 1/8-inch Female stereo plug adapters are cheap.  Here's an inexpensive solution to your problem on Amazon.