Regular boxed version of the original European AKG K12P sound quality than mx500 
To introduce quality products
Bass: K12P known as a strong low-frequency really is not disappointing to me, from 16Hz indicators over the MX series, when they listen to the actual amount of low-frequency compared with a sense of plenty, but it sounds great momentum is not very hard, but flexible on A little bit defects, but one of the low-frequency over the same period last year complete the MX400 and 450, 12P play a strong personal feeling is that those low-frequency dynamic dance pop or rock, 12P allows songs to listen to more momentum.
Treble: K12P treble, OK, but it does not sound comfortable ear-piercing are just the kind of good
Comprehensive: K12P is a very high cost of the ear, it seems to me, and the MX500 is the same level
Recommendation: like to listen to pop music should not miss our friends
Model: K12P
Brand: AKG
Type: dynamic ear -
Impedance: 17 in Europe
Frequency response: 16 ~ 21000Hz
Sensitivity: 127dB SPL / V
Total harmonic distortion: <1%
Lead: 1.15m
Weight: 5g (non-line)
Plug: 3.5mm stereo