I made this pre about 2 years ago. That 1510 chips. Afaik it's the smallest phantom powered mic pre, though not available for sale. Two balanced mini jack inputs, one minijack stereo unbalanced output. 10 way mini grayhill volume switches, 48v switchable phantom per channel. I figured since really good all in one recorders like the dr100mkiii came out this thing would not have utility but who knows. No noise measurements but it sounded dead quiet and great. Mint tin case, so it's not built like a tank. No protruding switches are plus and minus, you have to get inside to set gain and switches but also it would be less prone to any of the switches breaking.
It would be a fun side project to break out the iron and sell some but I don't want to run a company or deal with any bureaucratic tape.