500 USD closed back high sensitivity option
Oct 7, 2021 at 4:29 PM Post #16 of 16


Headphoneus Supremus
Jun 26, 2009
I'm in the same situation as you, looking for a M40X upgrade, except my budget is about half of yours.

So far I've found:

AKG K553 Pro (0.05mW)
AKG K371 (0.05mW)
Beyerdynamic DT 177X GO (0.8mW)

The number in brackets is some calculation from an online headphone power calculator that takes the ohms and sensitivity and then tells you how much power is required for a certain dB level. I think the ones above are for 70dB. For reference, my M40X's are 1.65mW, and sound fine to me on my non-LG phone.

Sounds good.

My wife is getting K371, since she needs a boom mic cable to go with them and has a small head. K371s are most likely on-ear, rather than over-ear, on my giant head.

After some research (looking at db/mw and db/v values), I am leaning towards Beyerdynamic Amiron wireless or AKG K553s with short portable cable. Shure 1540s look good on paper, but they don't come stock with short portable cable.
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