Headphone Reviews

Measurements

Little variation in raw frequency response show the headphone was able to seal reliably and repeatably. Compensated response clearly shows the broadly humped bass centered at 100Hz. The dip in the mids wans't as audible as I would have thought. From the presence range (~1-2kHz) and onward, the plot is relatively well behaved with a nicely modest peak at 10kHz. Overall, 1kHz and above should be tilted about 10dB less, it's this response I think I heard as laid-back and veiled somewhat.

30Hz square wave is quite sway-backed due to the significant roll-off below 100Hz, but as one can see from the low level of THD+noise in the bass that they do a good job of delivering nicely textured lows. This was readily heard in listening. THD+noise was otherwise was quite low as well; 100dB plot lying well below the 90dB plot shows good power handling; though bass distortion begins to rise it is not at all excessive.

300Hz square wave shows little overshoot as a result of the relaxed upper treble, but the initial spike is readily apparent and is followed by little ringing. This delivered a relaxed but resolving treble during listening. Impulse response also shows a lack of fast transient response, but subsequent noise is fairly low and short lived.

Impedance response shows a roughly 40 Ohm headphone with a primary driver resonance at 100Hz. This is a fairly rough plot, and indicates to me that DIYers might be able to substantially improve the headphone with various damping methods.

Isolation is fairly good for a headphone of this type at -11dB broadband isolation, coupled with 23mVrms needed to achieve 90dBspl these will make for nice headphones to use in urban portable applications.