A 309 is the same basic arm as the IV and V; differences are that the 300 series (309. 310, 312) use an alloy arm tube as opposed to the more expensive units which use magnesium which is supposedly better at resonance control. In addition the more expensive units have higher grade bearings and easier adjustment capabilities and allow more easily repeatable adjustments.
Having said all that there is no reason a cartridge that mates well with a IV/V should not mate well with the 300 series. You should have good results with the Dynavector just as you do with the Shelter. I use a 501 shelter with a SME 312; works well.
Having said all that there is no reason a cartridge that mates well with a IV/V should not mate well with the 300 series. You should have good results with the Dynavector just as you do with the Shelter. I use a 501 shelter with a SME 312; works well.