Nintendo Jamma adapter

Compatible with Donkey Kong ( 2 board ), Donkey Kong Jr. , Mario Bros, Popeye and Donkey Kong 3

The adapter comes with quality colour inversion circuit which is a reproduction of the Hantarex one found on Nintendo cabinets imported in Europe.

The adapter has also an amplifier with adjustable volume, gain and bass.

Both the inversion circuit and the amplifier can be disabled via jumpers for later nintendo boards which have aldready the circuits installed on the boards.