It's an interesting tonearm system. TTW takes a 10 inch Jelco and makes a heavy surround for it. With the knob on the top, I can adjust VTA. Once I get the VTA how I like it for say, a 180 gram record, I can mark that spot on the included dial (not shown). I can do that for any size (thickness) record and then go to the correct VTA for each type. For very fine adjustments, I can adjust VTA via the tonearm pod (called the VTA Glider). It uses a 3 and 1/2 inch diameter (!) piston and adjusts in very fine portions over a max 1/2 inch range. I haven't set the VTA pod up for that, yet and am solely relying on the VTA adjustment from the tonearm carrier. I'm currently using a Soundsmith, (The Voice) moving iron cartridge. I'm thinking of adding the Arche' headshell, as it allows azimuth adjustment at the headshell. I also intend to add another VTA Pod and another tonearm eventually.