GONE: AKG Q701 (bass modded), AKG K702, AKG K340, Audeze LCD V.2, AudioTechnica M50x, Beyerdynamic DT 880 600 ohm, Focal Utopia, Grado SR 60i, Hifiman HE-1000, Hifiman HE-560, Hifiman HE-500, Nad HP-50, Philips Fidelio X2, Sennheiser HD800S, HD650 x5, HD600 x4, Sennheiser HD 540 Reference 1 and 2, HD 560 Ovation II, Sony MDR-V6, Stax SR-Lambda Signature.
Headphone Amp Inventory:
Auralic Taurus Mark II
Beta 22 with Sigma power supply, in one enclosure
Also, currently using a Harman Kardon HK3490, 120 w/channel @ 8 ohms receiver as well, at times, especially for HE-6 (speaker taps).