Hey folks. So I am fairly new here. My background is a player/luthier/builder/enthusiast. I posted a thread on the electromatic group where I installed trestle bracing in my 5120. Part of my project and my reasoning for posting here involves swapping out the early 2000 reissue Filtertrons I installed 10 years back. The easy solution no brainer solution is obviously the TVJ classics or some of the other boutique offerings which are all really nice. My intent here isn’t to trash the other options as I think they are great. But they days their are many different Filtertrons out there and they no doubt have inaccuracies that make them not great options. What I have are a pair of Roswells I scored for $40 for the pair. Of the majority of budget Filtertrons, these looked closer in specs and had better reviews than some of the other budget Filtertrons that are more comparable to PAFs. I ordered a pair of sand cast alnico 5 1/4” thick magnets from Philidelphia Luthier that I will swap after I install and do a before sound clip so I can do a before and after comparison. I also have a magnetometer that I will use to check the Gauss between the old Filtertron and the new one with each different magnet. Just know that I am fully aware that this will bring on flaming from others. Just scroll on please. In the meanwhile here is a comparison of the Roswell to a 1966 Filtertron.