Taken From The Audio Journal Of A DigitalFreak
Sound Byte: The HD25 mods
I've been meaning to post some pics concerning my old knockabout Senn's but I kept forgetting. I decided to retake some new pics tonight with my updated rigs DAC/cabling so as to keep my posts up to date. Roughly about half a year ago I commissioned a friend to open these cans up and perform some mods in hopes of wringing more performance out of them.
Anywho, below is my modded Sennheiser HD25-ii-ii Adidas. I had my buddy Armaegis open them up for me and mod out the bass boom and overly metallic treble. End result, less of a prominent U shaped emphasis and a step closer to a more linear sounding presentation. Bass is now controlled and detailed and the lower mids are no longer obscured by the booming mid bass hump the HD25 is known for. Don't worry, even with the bass boom removed this can still has enough bass that's good enough for these HD25's to keep it's good sounding all arounder title alive. The big plus for me is although the highs are still spiked they no longer sound overly metallic making a lot of my music more tolerable to listen to. I dare say Armaegis was able to take away enough of the energy in the upper registers to kill off the hard roughness and smooth it out enough to make it sound a tad more natural.
Paired off with Eva and Raven feeding her her analog signal the HD25 takes another nice satisfying step forward in performance. I'm guessing the mods better DAC and Eva's better amp section with it's 209 opamp have all combined in taking away some of the lushness the HD25 is known for because I'm noting a little more clarity in the midrange. Even with the midrange cleaned up I'm happy to report that the HD25's earthy satisfying visceral crunch of electric guitars is still very much present. I consider the HD25 a nice can for rock and really didn't want to lose that satisfying earthy visceral crunch so I was pretty happy it survived the modding process and gear pairing. Overall I'm quite happy with this headphone and how well it responded to the mods and gear pairing. It's far from an audiophile can but God what a fun sounding kick ass rocker can. Excuse me, I have some metal to bang my head to on these cans. Arch Enemy anyone?
Edited by DigitalFreak - 2/15/13 at 9:51pm