SUT Advice - Which Ones Are The Best?

"This is, most likely, the finest head-amp I’ve ever heard. I state this because it is competitive with the finest transformers I’ve had, while all the many other (external) head-amps I’ve heard are simply not in that league. The ZYX head-amp is a solid-state device! It is highly unusual for a successful cartridge manufacturer to also design and build an audio component that is so different in fundamental nature (non-mechanical in this instance), with such excellent performance. The relevant details..." -  Arthur Salvatore

If you want to see what’s inside the ZYX CPP-1 look at the images in my system. Battery powered headamp with special resistors that looks like an MC cartridge coil (I was shocked to see that). Resistors made by ZYX to transfer the output signals with no noise and no inductance at all. They are made of pure coil wire of MC cartridges, cryogenic purified. I remember it was highly regarded by Arthur Salvatore who compared it to some of the best SUTs ever made.

A coil inevitably has inductance. However there are some tricks of winding that can minimize it, as in Mills resistors. Otherwise wirewound resistors are inductive. It’s the law.