Hi @Nathan, yes it's something completely different. IOTA Enterprises Ltd. is a British brand.
IOTAVX is probably the name of their lineup and the SA3 specifically is their stereo amplifier. See here:
https://www.iotaenterprises.co.uk/products/iotavx-audiophile-stereo-amplifier-sa3
It comes with a remote that features buttons for their amplifier as well as their network player NP3.
The remote can also be seen on the product page (5th image in the slider).
My JSON file includes only the buttons for the SA3, since I don't have the NP3 and was feeling a bit lazy. :)
If necessary I could scan the other buttons as well - but I couldn't test them. (However all SA3 buttons worked first try.)