What is the size of the AUX In Jack

[magictouch]

Hi All,
What is the size of the AUX IN Jack Plug on the PSR S670 and can I use a dynamic Microphone through the speaker system?

Thank you for any help or advice anyone can provide.

[SeaGtGruff]

It's a typical 1/8" (3.5mm) "mini" stereo jack. I don't know about using a dynamic microphone with it. The jack is really for connecting a portable audio player that has its own amplification, although you can adjust the amount of input volume as well as the balance between the auxiliary audio and the keyboard's sounds.