SOTA will have pre-production samples of the Pyx phono stage at CAF. I just received 10 pcs first article of the production PCBs for QC testing this week, but I don't have access to the production metal work. I have a picture of the early prototype from June of this year; the metal work is a bit rough as it was machined by hand but should give you an idea of the final version.
FYI, it sounds amazing; it is one of the quietest and most detailed phono-preamps I've heard. Unlike the Schiit Mani-2, the Pyx has a power switch with 4 second delay relays so there is no speaker thump at power up. Wyn is responsible for the circuit design and I did the PCB CAD work. The Pyx uses a hybrid active-passive RIAA network that has some distinct advantages over passive only or active only RIAA. The RIAA section uses 1% caps and 0.1% resistors that provide exceptional flatness of the RIAA response (±0.05dB) with excellent matching between R & L. The rest of the circuit uses 1% resistors throughout.
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Yep, us DIYrs know all about the sound of Wyn's design!!
here are a couple of my full pre amp builds, the DIY version has a line stage built onto the board as well. So for all intensive purposes these could be SOTA prototypes
Athanasios



