A few posts ago, I did a post detailing how to get better sound.
Anyways, I have since done Kees Mod, and am hugely impressed with the results.
The sound is warmer, less fatigue on the highs, less sibilance, more up front mids, beautiful bass response.
I would have never thought the slight and easy mods would have such a nice impact on the sound.
It is much different sounding than the stock now, and better across the board in Lows, Mids, and Highs.
The screwdriver is a philips precision #00. You can get a set of precision screwdrivers for 4 bucks at Walgreens.
Stick a piece of felt on the inside of each cup, away from the driver.
Buy standard cosmetic beauty cotton pads, 5.5 cm across is perfect. I put two in each cup. One was too much bass, three was too little bass. Two was just right.
I bandaged the left most hole on the right side, and the right most hole on the left side.
It's so nice now, really you must try this if u have a pro 900.
If you do have questions about Kees mod, I have no problem answering them.
Edited by TWerk - 2/27/13 at 3:15am