Since I have the DT1770s which would you recommend the Amirons or the DT1990s. Would the DT1990s be too close to the DT1770s, so should I go with the Amirons?
The DT 1990 is going to be a bit like an open-back and more even/neutral sounding DT 1770, it carries a similar character to the sound. The Amiron is more mellow and laid-back and ideal for long term listening, think a warm non-fatiguing somewhat u-shaped sound with the Amiron. The DT 1990 will pretty much compete and likely replace the DT 1770, the Amiron Home will be better suited as a complementary headphone to the DT 1770 imho.