The headphones-out & mic-in aren't mods it came like that. The 1/4 inch output is a mod. But yea, it looks very Yamaha except it has no brand/manufacturer information on it anywhere. Only a "Made in China" on the back.

I don't know who the bender is otherwise I'd refer you to them! :0 Sorry! smile

No brand on this toy keyboard. Check it out!

http://www.ebay.com/itm/180913022021

Video Demo:
http://www.youtube.com/watch?v=tdpFtRj1m8k