Wow brooko, the difference is huge with both the spiral dot and comply foam. Is it just on the graph or is the taming down of the 7khz peak acutally very audible?Here you go Theo - you'll have to take them as they are, because I didn't save them.
First up - Crystal foam at review time (a few weeks ago when I first got them) vs measuring today (I did the left earpiece in case wondering). See how consistent the rig is
Next is Comply vs Crystal - nulls the 7 kHz a bit (pretty well actually)
Spiral dots - almost same as Comply
Spinfit - PITA to get a good seal on - took me quite a few tests. Similar to Crystal foam but with less sub-bass (probably the coupler)
Sony Hybrid (Isolation tips) - similar to Crystals
Ostry Blues - likewise
No tip must have finally got the seal right or the bass would have measured differently.
Atleast according to the graph this brings it much more closer to a reference iem.