[mcbenzi_ghost]

Hello guys. I'm sorry if this isn't the propper forum to ask that but I have the matty wand and a 3d printed proton pack that I'm working on. Years ago I bought the spongeface matty adaptor and the gbfans light kit. What's the best speaker / battery pack for this? I live in Europe and I'm searching for this but I don't know the right expecifications for that. Can someone help me? Thanks.