Isn’t the 109 Pro a revealing can with good bass, midrange and a bit of sizzle in the treble? I haven’t heard one, but the 109 Pro sounds fairly similar to the LCD-X, minus the treble sizzle.
I want something different but complimentary to my LCD-X 2021. I also own HD 6XX. That’s why I’m focusing on the Aeolus or something warm and smooth, which it appears the 109 Pro is not.
Please school me if my interpretation – based only on reading and videos – is wrong, people! 