Ortofon tonearms ,Static and Dynamic - Difference?

I just put a 309D on My TW accustic Raven one, on the designers recommendation, he uses one on his. I am very pleased, admittedly, changing from a Jelco Vivid, it should be much better. It is more than a small step up in quality, particularly dynamics, it sounds like the volume has been increased, but also imaging, sounstage depth, a big improvement. The TW designer thinks on that deck, the Ortofon is only a few % points behind the Grahams, Schroeders etc. Before anyone gets upset by that comment, it's Thomas's, not mine. In general though, it is well made and very good value

I would just add to my comments about the 309D, that I made in 08. I am still happy with the arm, but found it was a poor match to higher mass cartridges. It really was'nt haapy with one of the stone Koetsu cartridges, much better with a Benz Micro LP. My fault for not checking compliance first