Bought these after receiving the Massdrop HE-350s which were just too treble-forward for my taste.   I listen to a lot of music when at work. Desk space is limited, so I can't justify running an amplifier, so I liked the idea of something inexpensive with good imaging that was easy to drive.   They blow me away. They outperform all the other cans I have (Sennheiser PX-100s, Audio Technica M50x, AKG K7xx, Hifiman HE-350). No burn in was necessary--just plugged them into my computer and was blown away by how convincing they were.   Convincing...