Edition XS hiss/resonance?

[maximum3535]

I've recently purchased my edition XS and I've noticed a background hiss/resonance that occurs very rarely but is consistently reproducible when playing:

at 4:45, 8:40, 11:13, and 12:20. This occurs when I'm playing at decently loud but comfortable levels. As per

Edition XS (2023)

back to HIFIMAN back to measurements home published: June-04-2023 NO SMOOTHING is applied to the shown plots. Most measurement sites have some smoothing applied which ‘irons flat’ sharp peaks and …

diyaudioheaven.wordpress.com

There can be noticeable noise especially at ~4.5k and 12khz, but the chords that produces those resonances for my headphone are at lower frequencies than that. Does anyone know if this is normal? Would it be worth it to try returning and rouletting? If someone also has an edition XS, I'd appreciate it if you could see if this is reproducible.

 

[HarmonicTHD]

I've recently purchased my edition XS and I've noticed a background hiss/resonance that occurs very rarely but is consistently reproducible when playing:

at 4:45, 8:40, 11:13, and 12:20. This occurs when I'm playing at decently loud but comfortable levels. As per

Edition XS (2023)

back to HIFIMAN back to measurements home published: June-04-2023 NO SMOOTHING is applied to the shown plots. Most measurement sites have some smoothing applied which ‘irons flat’ sharp peaks and …

diyaudioheaven.wordpress.com

There can be noticeable noise especially at ~4.5k and 12khz, but the chords that produces those resonances for my headphone are at lower frequencies than that. Does anyone know if this is normal? Would it be worth it to try returning and rouletting? If someone also has an edition XS, I'd appreciate it if you could see if this is reproducible.

What DAC and Amp do you have? Or how are you sure it is the headphones?

 

[maximum3535]

What DAC and Amp do you have? Or how are you sure it is the headphones?

That's a good point, I have moondrop dawn pro with magni heretic (both 115+ SINAD), I'm able to reproduce the hiss when connected to either my PC or iPad, and the hiss doesn't occur with my elex or blessing 2 dusk at all