I am looking at the
Fostex headphone page and its not really clear whether one or the other of their models is supposed to be the best overall. The all look to be identical in appearance. The T50RP seems to be able to take more juice, I wonder if that means it is a different driver and thus the higher retail price?
* Patented RP Technology
* Newly developed RP Diaphragm with copper foil etched polyimide film and neodynium magnet construction for accurate and natural acoustic sound reproduction
* Single entry locking 3 metre ‘copper construction’ cord
* Padded ear cushions for maximum sound isolation and deep bass reproduction
* Wide, self-adjusting headband for superb comfort and extended wearing periods
* Compatible with all analog and digital formats
*
T20RPmkII
* Frequency Response: 20Hz - 30kHz
* Max Input 2000 mW
* Impedance 50 ohm
* Semi-open type construction offers rich low frequency sound whilst maintaining all the nuances of vocal performance
* Excellent transient characteristics
* Ideal for professional use in commercial recording studios
*
T40RPmkII
* Frequency Response: 15Hz - 30kHz
* Max Input 2000 mW
* Impedance 50 ohm
* Enclosed type for excellent sound reproduction. Also prevents feedback into the mic at recording sessions
* Ideal for professional use in noisy environments, the first choice for DJ work and broadcast sound engineers
*
T50RP
* Frequency Response: 15Hz - 35kHz
* Max Input 3000 mW
* Impedance 50 ohm
* Damped semi-open type for extended low-frequency and clear mid / high frequency reproduction
* Superb quality and perfect for commercial recording use and critical listening applications
edit: Just a little curious tidbit. I was looking at the High Res photos they have of the headphone models on their website, and found that they used the same photo for all 3 models:
T40RP,
T20RP, and
T50RP and just photo-shopped in the name on the headphones in each picture (also turned the T50RP photo sideways and gave the adjustment bars a gold tint), but every other lighting highlight, spec of dust and blemish on the headphones is exactly the same in all photos... lazy marketing department...