ATH-2 - Overview
Audio-Technica's ATH-2 was an inexpensive orthodynamic-type headphone (A-T called the operating principle "Planar Moving Coil") with plastic frame and metal headband that dates from 1979. ATH-2 was the upper model of a two-model Planar Moving Coil lineup; the other model was the ATH-1. The ATH-2 is one of the few ortho headphones whose cups have an open (albeit obstructed) back.
The headband is not padded, but because of the arch-and-strap arrangement it is more comfortable than the ATH-1's headband. The drivers used are very similar to, if not identical to, the drivers used in the Realistic Pro 30.
The ATH-2's color scheme is notably very 1970's: brown and orange with chrome accents.
Two near-identical variants of this headphone were sold as the VectorScan VSH 5 and Audio Technica ATH-M2. VectorScan was a short-lived Audio-Technica brand most notably used for a line of phono cartridges. The VSH 5 and ATH-M2 are identical to the ATH-2 in every way but cosmetics.
There were a few other OEM versions of this headphone as well. The same, or a nearly identical, headset was fitted with dynamic drivers, for instance by Universum, Vivanco (the SR 75), and Transducer Research. So be careful if you see this headset from other manufacturers-- it may be an orthodynamic or it may not.
General Description of the Sound
I am not a big fan of ATH-2. They sound somewhat colored, dark and nasal, but posses all of the good orthodynamic qualities like speed and good transient response. I believe with extensive tweaking they can sound good.
--Faust3d 12:46, 10 March 2010 (EST)
Pricing & Other Data of Interest
Driver: Planar Dynamic Type
Frequency Response: 20 - 20,000 Hz
Total Harmonic Distortion (110 dB): < 0.8%
Sensitivity: 97 dB / mW ( at 1,000 Hz )(another source gives this as 98 dB / mW)
Max input (500 Hz, 60 sec): 1,000 mW
Cord: 3.5 m
Weight: 200 g ( Without Cord )