so, has wonderful pricey DIY-things, like cheap DC-DC Converter Module 3.3-13V to +/-15V by example but also a lot of DIY-Hifi-equipment..found it originally by their ES9028Q2M Audiophonics-made „Audiophonics I-Sabre ES9028Q2M TXCO„-HAT..
can be also expensive, u have to look exactly, but as said also relatively pricey things and they resident in the EU->means shorter shipping-times (for me)..
interesting site..😉

HDMI I2S LVDS to I2S Input Module HDMI I2S LVDS to I2S Output->24,90€->