Nintendo Color TV-Game AC-Adapter CTGA-901R (ACアダプター, 1977)

The four consoles in the Nintendo Color TV-Game series all used the same power source: the CTGA-901R AC-Adapter.

This accessory was introduced in 1977, together with the Color TV-Game 6 and Color TV-Game 15.

The CTGA-901R powered the Color TV-Game series

Both Color TV-Game 6 and Color TV-Game 15 could also be powered by batteries. Color TV-Game Racing 112 and Color TV-Game Block Kuzushi, on the other hand, only worked with the CTGA-901R AC-Adapter.

Notice in Block Kuzushi box regarding compatibility of the CTGA-901R adapter

The adapter was not included with any of consoles in the Color TV-Game series, and had to be bought separately for ¥1,500. This helped keep the price of the console (seemingly) down, but also prevented unnecessary duplication of adapters for people who bought multiple games from the Color TV-Game series. The fact that the adapter was compatible with the other games was clearly communicated in manuals and on the boxes.

The adapter provides 9 volt DC.

Two versions of the CTGA-901R adapter exist

Two versions of the CTGA-901R exist, identical in price and specifications, but different in size.

The two versions of the CTGA-901R adapter side by side

The smaller version is the older of the two. The larger version is more common to find these days.