Final Thoughts

Koss has come a long way and I hope they continue onward with their excellent Bluetooth technology. I want to see a small revision of this headphone next year, something with some angled drivers or pads as well as a boost on the bass tuning to fill things out a bit. Crisp sound is great, but not at the expense of a flat sound stage depth experience. Linear and balanced Bluetooth sound seekers should opt for this Koss BT540i over any other $199 and under BT headphone that I am even aware of, top tier for BT headphones without question, but from an audiophile’s sound standpoint it will not satiate the typical audio enthusiast with some experience in the field. This is a good Bluetooth headphone that sounds nice with even with dirt cheap Bluetooth dongles like that AZiO USB BT device, no expensive rig needed to max out the potential of the unit either via a wired connection, which sounded virtually the same as when it was paired with only the BT dongle or devices I had on hand for this review.

If you want a more balanced sound via a Bluetooth headphone, I would recommend this Koss BT540i before any other. Koss is heading in the right direction and this headphone only needs a small amount of tweaking to make it very good. Right now, I would consider this only a solid buy if you want a Bluetooth headphone. If not, there are plenty of other great $199 headphones out there without Bluetooth that sound better. I am impressed by the excellent sound quality this headphone offers via its Bluetooth function. Koss has done a great job with all the Bluetooth functionality, but should probably opt for improving the driver quality of the headphone a bit to compare with some of Sony’s latest Bluetooth headphones of the same price.


Price: $199

Frequency Response 10-25,000 Hz
Impedance 38 ohms
Sensitivity 100 dB SPL
Cord Straight, Single Entry, 4.5ft


4 Responses

  1. Justin Myers

    These really aren’t bad at all. I started off with a smaller pair of Panasonics and
    didn’t like the range at all. It was very distant and tinny sounding so I
    started reading around. Something I read at CNET led me to get a pair of Sonys
    but I wound up sending them back. They were loud and bass’y but didn’t offer
    anything crisp. I think if I would have spent a little more on Sony, I would
    have been fine, but I was led to these Koss by a review from POC Network (
    ) who thought very well of them. They were the same price as the more expensive
    Sony option I probably would have ended up with outside of the fact that the Koss
    were wireless. I’ve never owned a pair of wireless headphone before so I thought
    hey, this would be cool. Well it was as I use them all over the place. I walk to
    work since I only live about 3bocks away and tend to wear them there as well (when
    I can get away with it at least) ^_^. If they were waterproof, I would bring them
    to the gym with me and listen to something zen-like, but they aren’t. I look back
    at the Panasonics and laugh :)

  2. x58

    Dude, if you test BT headset with aptX support you might as well have equipment supporting this extension. These will sound different (worse) on your iphone5 or any listed BT source then they would on – say – S5 (or S4) which support aptX. Retest and report back pls. Nice writeup otherwise.

    • 24bit

      Thanks! Tested with some home receivers that have BT output, sounds no different than my S3, as well as my Astell and Kern AK120. I will continue to test this with different BT output devices though upon your request, but I don’t think the clarity is nearly up to par with the new Sony XB950BT which is a review that will be published this week. Via the wired connection, the Koss is shoulder shrug worthy at best, as the BT enabled Sony XB950 bested it everywhere, and the wired Sony XB950BT was really unfair to compare to this Koss. Both are roughly the same price.


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