Not to piss on an otherwise fantastic unit by the looks of it, but had the Aux In and Phones Out been mini jacks, an FX loop would maybe have fitted.
Mini jacks are arguably more standard for Aux and Phones these days anyway.
My Shiftline Olympic MkIIIs is smaller than the Subway (with a tube!) and it has these two mini jacks (and the XLR DI) on the left side, which is fine since the pre-amp/DI is usually the leftmost pedal on your board. The aux/phones are stereo on the Shiftline too.
I LOVE my Shiftline Olympic, sounds fantastic and is 100% quiet (same as the Genzler Magellan Pre), only downside is rather limited EQ. The EQ on the Subway PreDI MkII looks a lot more versatile.
At €199, it is a no brainer buy, I’m very curious how it stacks up to the Shiftline.