Summary: Even though I have several cans that do many things better than the K601, I still found this to be my go-to headphone for some laid back listening before and after work. AKG engineered a winner in regards to comfort and engaging mid-fi sound reproduction that just does not get fatiguing.
Pros: Extremely comfortable (near weightless), excellent mid range and large soundstage
Cons: Build quality is a little bit flimsy, bass is light and sound is a little lean.
Summary: I'm going to dive straight into the sound of the K601. Bass is where this headphone will be criticized most. Whilst it extends fairly well, the impact can be put to question; when a recording gives you bass impact, the K601 usually comes out with it, but it can fall short sometimes, especially when...
Pros: Great comfort, and good sound for the price.
Cons: Design may not fit wider heads, and build quality could be better.