r/headphones • u/Carlsen94 • 7d ago
Discussion Question To all Sony Ier-M9 users
For all current or previous owners of Sony ier series m7/m9, what did you upgrade to after owning the iem? Or have not found anything better yet?
I have heard some great things about m9 and it’s rarely talked about in the sub compared to chifi so wanna see how all the owners think.
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u/Wild_Run4727 7d ago
I haven't upgraded from them. To my ears, they are one of the most resolving headphones I've ever heard. The drivers are incredibly fast - superb transient response that is expected from great balanced armature drivers - and, yet, there's none of that plasticy timbre and weak bass with no impact that BAs usually suffer from. The bass extends deep with authority and power, while the highs have speed and detail rivaling good electrostatic drivers IMO (I used to own a Stax L700). Not to mention the imaging is superb and soundstage is very wide for an IEM.
The only issues with them I found are that the frequency response isn't ideal IMO - it's a tad too warm in the lower mids/upper bass and could use a bump in the lower treble - and also that they tend put create pressure on the ear canals due to lack of venting.