Look great, but no manual, good luck.
Nice price, I'm not sure if they work well or not because the meters didn't come with a manual and the labels are a bit misleading. The capacitors are rated at the same voltage as the AC input, shouldn't they be at least double the voltage for longevity?

The meters need the controller because they don't register like others and require higher voltages to measure sound levels (normal meters can connect directly to an output transformer for example).

Good price though, and they look good lit up, guess I will wire this up today :-p