Lofi synth built into a NES Advantage controller. Two square-wave oscillators controlled by individual knobs and played with the A and B buttons. B is more high pitch range and A is a more low pitch range. These big red buttons have an almost touch sensitive feel and give you control of small nuances in the sound. The original TURBO function adds pulsing/modulation to each oscillator with controls for speed. The player select switch is now the power. Start and select were replaced with a large red light. The slow button acts as a way to hold down the A or low pitch oscillator hands-free. There is also a volume trim on the side to keep the output at the appropriate level and operating noise relatively low.

It is powered by an internal 9-volt battery with a standard 1/4 inch output.