Hey Wads, I still consider myself a Noob, but I do have a bit of TK22 experience. Yes, you need gadgets, primarily a programming device and a TV remote control. The device you can make your self with a jst plug, an apple and an LED. Not difficult, I did my own and saved ten bucks. Well, nine anyway,
As for plug and play, not quite. It mainly depends on what tank and if it's airsoft or IR. The airsoft Sherman was a snap and only involved a couple of connections, but I have yet to put a TK22 in an IR tank so perhaps others here can help if you have IR. So which do you have, IR or airsoft in your KV-2? Does it have a slip ring?
When FDR coined the phrase "The Arsenal of Democracy", he was talking about Detroit. Proud to live in the 2nd most violent city in America!!