I own susvara, and i have blown a couple. They are not as tough as the price suggests and if you over egg the bass on EQ with the aded distortion you are likely to wreck them ESPECIALLY if you listen loud like me. If you are a quiet listener, then it wont matter, but at volume, we dont always hear the distortion that causes the heat nor do planars always make it clear that enough is enough before they tear. On standard drivers you tend to hear them hit the stops ... i dont think susvara gives that indication. I also used the more posh version of the lokius, the active version (£1k) and it was absolute junk. If you hear Susvara on good tubes its holographic in presentation and layered. THe second the EQ was on, the presentation broke down to something totally flat. WIth it removed, all was back to glorious layering. I wante dto love that Remote controlled EQ, but i sold it within 3 days thankfully not losing a penny.
What i would suggest and i do use is ROON. ROONs built in EQ is perfection. I hear no losses from using it. I raise its bass shelf a touch. I also break the seal on the lowerside of the headphone cup to give a slightly more pronounced bass. If you pull the cups slightly off your ears you will hear more bass. I beleive you might loose extension slightly, but its always a trade off so pick accordingly.
These are my personal opinions and people are free to disagree, but i wont be going with EQ outside of Roon ever again. And i wont be going solid state for headphones ever again! Im Susvara - Gustard R26 - Cayin 300b mk2 (Elrog MO, Mullard White prints, 2 x Grey plate 22DE4 2 x Black PLate 22DE4) - Its glorious.