Stax SRM-007 t MalValve Audeze Deckard Stax SRM-T-1 S Creek OBH-11 Cayin HA-1A Stax SRM-T1 Meier Audio Creek OBH-21 SE Lehmann Audio AKG K-1000 Vincent KHV-1 Antique Sound Brocksieper Pro-Ject Head Stax SRM-Xh MalValve SPL Phonitor Stax SRM-212 Stax SRM-006tS Hifiman EF-5 Cayin HA-1A Pro.2 HA-4 SU Brocksieper Graham Slee Beyerdynamic Violectric HPA Pro-Ject Head Stax SRM-323 II SPL Phonitor X Little Dot MT Restek MHA-5 Chord Hugo 2 Creek OBH-21 MK SPL Phonitor Creek OBH-21 SE Heed Canamp Kopfhörerverstä Rega Ear Amity HPA 2 Moon 230 HAD Beyerdynamic Teac HA-501 Synthesis Roma Sugden Bijou AKG K-1000