It always depends on your preference and music type. I listen to electronic music with a 250 ohm DT990 on a Dell soundbar using cystalizer, bass boost and bass

It always depends on your preference and music type. I listen to electronic music with a 250 ohm DT990 on a Dell soundbar using cystalizer, bass boost and bass enhancer. IIRC the order matters. Prior to this I let my amp handle this but I kicked it out because of 35W standby and Easy Effects doesn't work with it on an HDMI connection - constant signal cutoffs for 3s (Linux issue). Without Easy Effects the soundbar sounds awful to me. Still impressed that it drives 250 ohms this well.