Here is the vdH website on their phono stages:
https://www.vandenhul.com/product-category/electronics/
The way I read it, the SB offers balanced operation; the base model may only offer XLR inputs into an SE circuit. I don't know. The language is only a little less vague and confusing than what you find on the Channel D website. Clearthinker, I think you made the most cost-effective choice among the many Grail iterations, but it occurs to me that their statement about auto matching for cartridges in the 40-400 ohm range might mean that if the cartridge has an internal Z of 4 to 40 ohms, which covers just about all low output LOMC types, then the current drive stage will accommodate it. It's a bit confusing and suggests that voltage drive is an option. I cannot blame drbond for being confused. But you own one, so let us know. Most reviewers don't have a clue.