In this video I review the HEDD Audio HEDDPhone, which is easily one of the more interesting releases in the last few years because it’s a full-range AMT headphone. That’s the big talking point: it’s not a hybrid setup with an AMT tweeter/woofer situation—this is fully AMT, which (to my knowledge) makes it basically the only modern full AMT headphone on the market. I go over the specs, build, and why the comfort has been such a point of contention, including the limited height adjustment, the lack of a suspension strap, and the fact that it’s a massive 718g. Sound-wise, I break down what I’m hearing in the bass, mids, and treble, and why the overall tuning comes off “weird” to me. There’s sub-bass roll-off, a strange lower-mid dip around 400–500 Hz, and then a treble that isn’t overly bright but has a lot of air up top. I also talk about technical performance—detail is competitive but not segment-leading for $1700–$1800, stage is fairly wide, and imaging is above average. My big takeaway is that while it’s a cool and fairly successful tech demo for AMT in headphones, it has enough flaws (comfort, tuning oddities, and severe driver crinkle on this unit) that I wouldn’t pick it over heavy hitters like Arya or Clear in this price bracket.