What PSU Should i buy

Hey guys! I am wondering what PSU should I buy for this building. I use this build for editing. My build: CPU: I7 9700K RAM: x4 16GB DDR4 GPU: RTX 2060 SUPER COOLER: 212 EVO & 3 120MM FANS STORAGE: x2 SSD 250GB & 1 HDD 1TB WD I was thinking to go with these ones. what do you think? Corsair...

So I wanted to ask I have These Headphones (Planning on Upgrading Soon) https://www.bloody.com/en/product.php?pid=12&id=165 That have the "Sensitivity" as it is Stated on their Site being 102 db ± 3 dB. 1- So first of all do they mean SNR when they say Sensitivity and also What is the "± 3 dB"...