The frequency response in RAA is obtained through the reproduction and analysis of a special noise signal with the subsequent generation of an impulse response. The impulse response is able to show visually only the same or different polarity of the drivers and possible high-frequency resonance.

Comfort and weight are perhaps the biggest selling points of this headphone. Sure, those specs are impressive, but they only get more impressive when you actually hold this headphone in your hands and realize just how incredibly light it is. You could wear this baby all day and never feel a thing.

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But as I said, at typical listening levels, I found the MDR-1AM2 to be quite pleasing. A common complaint of many headphones these days is overly strong bass but this is certainly not the case with the MDR-1AM2. Bass is strong but not overly emphatic and clean. It is certainly not muddy, so drums strike with adequate authority and precision. The mids are present and not grainy, which gives vocals and guitars a smooth and inviting sound. The treble, however, is its most problematic component as it is overly emphasized and has an uneven, unnatural sound. Something I really don't like ! It's pretty much the worst leather I have seen on decent headphones in this regard. Sparkling detail abounds in the midrange, with clear and contrasting notes defining the MDR-1AM2. Fidelity comes across as nearly impeccable here, giving the impression of truly meaty mids. High End I demo'd a pair today and the modder in me thought "POTENTIAL" so I went ahead and bought a pair. Also, it doesn't squeak and creak like the few MDR-1A's I've demo'd in the past!

For how much bass it has, I'm actually surprised how low distorsion actually is, so it's a winner in this regard.Sound is of very good quality and pretty neutral apart from the bass region which has a big boost (+6dB from reference). The graph shows the change in the perception of the frequency response of the headphones when listening to music with a different loudness relative to the natural level. When listening to headphones at a low volume, the perception of recoil in the low frequency range decreases, and when you listen to it at a high volume, it increases. As for alternatives, I'm not 100% sure what will replicate the same or similar results but I'd try cotton stuffing they use for stuffed animals. I bought the MDR-1AM2 in 2022 at sale for a price of 100 euros (the MSRP is more than 200), main reason being I wanted to have a pair of very light headphones.