I’m listening to Heir by Public Memory that was mentioned in this thread through a Bifrost 2 + Lyr 3 + Stellia (which I believe is warmer than the Clear). There are a lot of metallic clanking sounds going on throughout, along with a superb gloomy bass synth that underpins the song. I would say that combination of equipment is rich and warm, with smooth treble, but still lots of detail, but I think that is more the sound of the Stellia coming through than the DAC and amp, which I always thought of as a slightly warmer than neutral solid state sound with a little bit of tube color before I got the Stellia 
If you replace the Stellia with a Clear in that lineup, I suspect you’re back to neutral and detailed, but with a little of what @ValentineLuke described as taking the edge off, depending on what tube you select.