Koss ESP/95X Headphones vs. Sennheiser 6XX From Drop; Electrostatic Ecstasy for your ears?

Hey, friends, in this video, I will discuss the KOSS ESP95X Headphones from Drop review the features, build quality, specs, design, overall quality of sound, and how they compare briefly to the Sennheiser 6XX from Drop. I test the KOSS ESP/95X with several preamplifiers and DACs to get a feel for the best pairings. I tried a few preamps and digital-analog converters: the Matrix Element X, Schitt Bifrost 2, Topping D90 Digital Analog Converter, Schiit LYR 3, Feliks Elise ZMF Pendant to name a few to give my overall conclusions.