Regarding the phono stage (that he made), this is what the seller said.
Any preamp with an auxiliary input will work. The "Takata phono stage" will drive any 5k or higher input impedance, with gain ideally around 10dB (depending on your power amp and speakers). As it is, you do not plug it into phono input. One day, you may get the urge to do a little surgery on the phono stage, and try the MC step-up transformers connected directly to your phono input. Inside the cabinet, are the schematics for the Cine-Mag step-up transformers connection options and the phono stage, which will make it easy to understand how I’ve set them up. From experience, however, many vacuum tube phono stages suffer from higher noise, or tube microphonic issues, forcing one to buy super-premium grade tubes. I’ve also included spare transistors for the non-standard power supply regulator along with that schematic. Don’t worry if this doesn’t make sense right now.
The cartridge is aluminum not plastic.