Disclaimer: This review is dedicated to Flysweep, who generously got this headphone on a loan tour for friends at Head-Fi.org. Such a great man.
|The modder, LFF himself.|
In September of 2011, a Head-Fi user, LFF, introduces his modified Fostex T50RP, Paradox, with a ground-breaking modification technique utilized. Once enough feedback has been gathered, he commercializes the model at his website, Paradox Audio.
In contrast to the stock version, Paradox comes with higher sound quality, which is comparable to that of more expensive headphones like Sennheiser HD650, HiFiMAN HE-500, and even LCD-2, according to Purrin. And on top of that, Paradox features an elastic headband for comfort, and a pair of sock-pads, which turns T50RP a semi-open earpad headphone. LFF hints that these pads are simply the upper part of female black socks with a pair of Fischer Audio FA-003 earpads sowed together. What a brilliant idea.
CON: Fitting is extremely tricky, as the sock-pads are moving around randomly whenever the headphone is touched or the head is tilted. A slight misfit may result in a substantial loss of bass, as the sock-pads are quite loose in acoustic resistance.
Above comparison indicates that the air compliance in the rear cavity has been decreased with additional damping in the rear cabinet. This is not a rocket science, and anybody can easily DIY this by using a damping material themselves. (of which will be covered in the upcoming part 3 of my T50RP analysis) In other words, this little extra damping in the back, the sock-pads & elastic headband are worth $400.