K-712 Pro : Airy, spacious and detailed sounding

I read mixed reviews on this, mostly positive with some negatives. Some said the bass isn't heavy despite the additional 3db in the "low end performance". And granted when compared to my Sennheiser HD650, the bass doesn't seem as pronounced. But this is marketed as a reference headphone so I don't expect this to be the type of headphones for bass heads.

Initially on the first day when I listened to it on my Marantz PM 8006 paired with my Marantz NA6006 as the DAC, it was underwhelming. So I went to sleep and started listening again. It's been almost a week and the details, clarity, airiness and spacious quality to it is something I've come to love, compared to my Sennheisers which has already burned in for sure. I like how the vocals seem to be brought forward while other headphones either has pronounced bass or trebles or just flat sounding which allows everything to just blend together into 1 big musical dish.

Nothing wrong with a flat frequency response, nothing wrong with pronounced bass and trebles. But it's more of a "right time, right tool" kind of situation. Will I listen to an EDM song this with this? Probably not, I would use my Meze Noir or Audio Technica ATH-M50x for it. Pop? Orchestra? Live albums? Yes I would! Also super comfortable for long sessions!

In summary, would I recommend this? Yes! Especially to own a piece of history! Would I say it has flaws? Yes, cause nothing is perfect, but again, I think you'll have to consider the type of music you're listening. I would use this for pop, orchestras and songs where I want to pay attention to the lyrics. But I won't use this for songs that are bass dependent as it'll probably won't suffice. Looking forward to getting a cable approx 30cm/1ft long and 3D print a holder to put my Fiio BTR5 to use it as a bluetooth headphone around the house. It's light feeling to do that and sometimes, you just don't want cable getting in your way, even with the included cable being long as it is