Last year, Audio-Technica had released several new products (as they always does.)
However, most people had their eyes only on the top lines such as W3000ANV, ck100 pro, etc.
But there are some great jewels among the new line TAD series.
I come across one, TAD400.
Put it simply, it's the M50 in open back design!
The price is great, one can grab TAD400 for around $50 dollars, even at $70 here in Taiwan, I'd say it's a steal!
TAD400 in easy to drive, efficient, and doesn't require your source to be great to sound decent.
I put it with all my portable players, including smart phone. It works great.
It has decent flat main frequency response, good amount of bass for a open back design, and still retained ATH's famous treble flavor.
Also, it's very light weighted, which makes it very very comfortable to wear.
I did some measure test for it after I listened to it for a while.
These test were done with RME babyface and a pair of binaural microphone in my ear.
First of all, frequency response:
Very flat from 100Hz to 2kHz, which is great!
Bass doesn't roll-off until 60Hz, very good!
Second, CSD plot:
Please note that the floor is -50dB & -45dB. There are some ringing but most under -35dB.
Generally it's quite fast and clean!
The treble has longer decay periods, which could be the source for the famous "ATH flavor."
Otherwise, all frequency decays very decently.
THD, across frequencies:
It's quite good! The harmonics are well controlled. Low distortion after 100Hz, flavored treble harmonics.
Most harmonic is 2nd order, while higher order harmonics are very low.
It's really great!!
Well..... for $70 (which is the price I paid for it here in Taiwan,) TAD400 is simply a WONDER!
Edited by killkli - 2/29/12 at 7:09am