Graham Phantom has a very clever little tool to help setup P2S. It's a plastic cap on the spindle. A hole on the head shell to fit into the tip of the cap, level the arm, and P2S is set.
While setting up Phantom, I noticed a hole on the TW 10.5 head shell as well. Verified with Thomas @TW, it will set P2S to 251.2mm if the hole on the TW 10.5 is centered on the spindle. Unfortunately, TW is on metric but Phantom is not. So the tip on the Phantom cap will be just a bit larger and wouldn't fit in the TW hole. Still a big help to setup P2S on TW 10.5 arm.
Overall, Phantom is a very user friendly arm compared with TW. It provide easy repeatable adjustments on azimuth, vta with the spirit level, and anti-skate. Arguably the easy swap of arm wand as well. But adding damping fluid to the pivot cap is really hard to gauge.
TW can offer adjustments as well but no markings. TW VTA mechanism is pretty good, nice touch and feel. But TW AS is quite problematic to begin with for the arm I bought, which had an noticable impact on the sound quality. Luckily the problem is fixed easily.
While setting up Phantom, I noticed a hole on the TW 10.5 head shell as well. Verified with Thomas @TW, it will set P2S to 251.2mm if the hole on the TW 10.5 is centered on the spindle. Unfortunately, TW is on metric but Phantom is not. So the tip on the Phantom cap will be just a bit larger and wouldn't fit in the TW hole. Still a big help to setup P2S on TW 10.5 arm.
Overall, Phantom is a very user friendly arm compared with TW. It provide easy repeatable adjustments on azimuth, vta with the spirit level, and anti-skate. Arguably the easy swap of arm wand as well. But adding damping fluid to the pivot cap is really hard to gauge.
TW can offer adjustments as well but no markings. TW VTA mechanism is pretty good, nice touch and feel. But TW AS is quite problematic to begin with for the arm I bought, which had an noticable impact on the sound quality. Luckily the problem is fixed easily.