6.3 plug wedged between the earpads and rig.
Here you go: https://www.akg.com/root/N90Q+LE.html
Thank you for the review. I have no comfort issues with these. These are the first 'phones I've got that I can use with the low powered Fiio M3K DAP with plenty of bass and no limit on volume.
I've heard both and bought the K371.couple of Youtube reviewer say that AKG K361 is better then AKG K371...
I have measured it pretty much the same and can 'confirm' Amir's measurements and findings.
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The kink one sees at 100Hz (most obvious in the GD) is caused by the pads. It loves to absorb and release 'energy' at that frequency. Most pads do b.t.w. it is not a driver thing. When changing pads on headphone I often see it shift higher or lower.
CSD shows the 5kHz part to be a resonance.
For those that want to address the small treble peak passively:
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It is a good sounding headphone. Too bad about the mechanical issues and comfort of the pads as well as the microphonic cable. Otherwise I would have kept it.
The QC is not a problem that much (it used to be I guess), but the pads are atrocious, with the creaking, moving memory foam underneath. Hopefully there'll be some replacements in the future...Such a difficult one this is, the measurement certainly is attractive but the QC is quite a concern
K371s don't have this issue for me. It's only fair to note that I've been wearing headphones regularly since I was 15, have worn much more uncomfortable designs. I've got AKG's K167 headphones in a box where they are probably going to stay. Those headphones had major QC issues. The plastic used breaks easily and the big pads are too soft, so the hard plastic inside the earpieces would be pushing against my ears. I took the pads from my Sennheiser Urbanite XL headphones, replaced the stock pads on the K167 headphones. Those pads are deeper and stiffer. I haven't had issues with the earpads of the K371s, seems like the plastic of these headphones is more durable than the K167 'phones, sound is better with the K371s as well. The K167 headphones have a broad lift centered around 2.5k, similar to the Sony V-6, less bass than the K371 though that bass does go similarly deep. The headband adjustment mechanism of my K371 pair doesn't have any problems though there might be sample to sample issues. The K371 pair I bought was already returned by someone else [I bought my pair used from B + H for a discount] so someone else would have more issues with these headphones than I do. I'm happy with my pair right now, the fact that they are so sensitive and don't require eq for bass a decided plus.Do the pads fully encompass your ears or do the back walls rest on the rear of your ear structure? That's my issue with oval enclosures.