Headphones: Audio Technica ATH-911 (my first own Headphone from the 90's, still like new), ESS 422H (AMT), JBL Synchros S500, Hifiman Sundara, AKG K702, Beyerdynamic DT880 Edition 250Ohm, Beyerdynamic DT-530 - 600Ohm (from the 70's like new, for Sale), Beyerdynamic DT1990 Pro 250 Ohm, Sony MDR-1ADAC (with builtin USB DAC), Sennheiser HD58X, Philips Fidelio X2HR, Sennheiser Momentum Over-Ear, Sennheiser Momentum On-Ear, Cabled Headsets: Beyerdynamic MMX300 V2, Hyperx Cloud 1, Hyperx Cloud 2, Wireless Headsets: Parrot ZIK2, Parrot ZIK3, Sony MDR-ZX770BN, IEM: KZ ZST Pro, KZ ZSN Pro, KZ ZSX, KZ AS16, Xiaomi Pro HD, Audio Technica CKX9i, TRN V80, Creative Aurvana Trio Original (drei Wege Hybrid Variante), Headphone Amps: Loxjie P20, Beyerdynamic Headzone H1 (DTS Surround Headphone Amp), Beyerdynamics A1 Clone from China, Fiio E12 Mont Blanc, DACs: Arcam Airdac, Arcam Irdac, Arcam R-Pac ( with integrated Headphone Amp ), Fiio E10K, TEAC A-H01 (DACamp), TEAC Ai-301, Portable Highres players: FiioX5 III, Fiio M11S