There is a curious mystery surrounding this product's introduction. People naturally made comparisons between the Arturia product and the Martinic Combo V organ because the latter is also an excellent emulation but it's free, versus a hundred bucks for Arturia's.
But the Combo V mysteriously vanished from its author's website at the same time that Arturia's Vox product was released. He has offered no explanation for dropping it. He still offers his equally good Farfisa emulation, but the Vox is gone (still available through other sources, though).
You have to wonder whether Arturia forced him to drop the Combo V, and if so, on what possible legal grounds. The Martinic Combo V doesn't call itself a Vox emulation outright, although it's quite clear that's what it is.