Man the 120 ohm adaptor really made a difference with the DT48S model. I have a 1/4" Sennheiser cable > 1/8" Radioshack adaptor > 1/4" Apuresound 120 OHm adaptor. Kind of ridiculous but I love what Im hearing right now.
I think either my cable needs replaced or the R channel driver is going out because the left is just a little louder than the right. Even with this issue I think these are a bit better than the modern DT48E. I use the balance control to even out the volume, but there is a definite slight difference in tonality between the two drivers. The L channel has more warmth. I have no idea how to use a solder. KBI said APS cable repaired his broken driver, but Im not looking for a $150 snake oil cable. Whats the cheapest way to get them repaired?
Next thing is to try a little Parametric EQ....
In what way did the adapter improve the sound....better lows, highs... what improved?
Also wondering what amp you're using with them. Too bad they don't sell an adapter 1/4" to 1/4".