Glitched NES Cartridge - T&C Surf Designs #1

This cartridge is glitched but playable. It has a 3.5 inch jack on the top that you can send voltage (in the form of audio) into to increase the amount of glitching. Because of the position of it, you need to use a top-loading machine to use it.

I need to test which machines it works with before I can sell it.

Video sample:

http://eksplotion.tumblr.com/post/4752539958/glitched-nes-cartridge-t-c-surf-designs-1-this