Nice DI box, steady&quality! ))
I bought couple of this DI boxes. It sounds perfect to me.
I also have some Radial DI. If compare them I prefer Palmer
because of price range and the same quality of the sound.
And by the way it's German quality!
I don't think that the weight of Palmer's DI box is problem.
I have checked it for keyboard, guitar processor,
sampling pad. It's good for the any stereo source of output.