Test condition: since 2020-09-23

  1. IEC 60318-4 Occluded-ear simulator type E610A (Ear simulator, Mic pre amplifier)
  2. Focusrite Scarlett Solo (Gen3) (ADC)
  3. Rode VXLR+ (3.5mm female TRS socket to male XLR Adaptor and Plugin Power Convertor for Mic)
  4. Meizu HiFi DAC Headphone Amplifier Pro (DAC+Amp: output impedance 1.1 Ω)
  5. Amplifier output impedance target is ~0 Ω (not IEC 60268-7 standard 120 Ω)
  6. 94 dBSPL @ 500 Hz (IEC 60268-7 standard)
  7. Resonance point is normalised to 8 kHz if possible
  8. 256k log-swept sine from 20 Hz to 20 kHz by Room EQ Wizard
  9. dB scale: 65 dB to 115 dB
  10. Plotting aspect ratio is 25 dB/decade (IEC 60263:2020 standard)
  11. Stock middle size ear-tips (by default)
  12. Noise level in my room