Massdrop x Koss Porta Pro X Headphonessearch
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Massdrop x Koss Porta Pro X Headphones

Massdrop x Koss Porta Pro X Headphones

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Just got mine and they sound incredible for the price. However, they're so light that they feel a bit fragile and the headband might be uncomfortable for bigger heads. I'm not confident in the long time durability as I'll have them in a backpack, but so far so good. Sound great withy my LG V30 and the built-in dac, but you'll want an amp to get the most out of them. I also wish they came with a hard case even if it cost extra.
Mt_bridge
I've got an LG V30 too, and I can definitely confirm that they sound great through it. I just got a Dragonfly Red and that REALLY clears up the high end and brings out the best in the Porta Pros. Love these headphones so much.
This is by far now the most favorite audio gear I have. It melts away on your head so you don't notice it. It's portable enough to fit in a pocket. And the bass is good.

I think I'm cheating on my Senn Urbanites with this.... Urbanites got style this got none.
If anyone at Koss is monitoring this board, have you ever considered a MD version of the UR42i?
Shipped on Monday, north jersey to Pennsylvania, back to north jersey (after sitting for a couple of days) then finally set for delivery today after they changed it from Friday, in south jersey. Funny thing is, at no time during this entire fiasco was this package anymore than a two hour drive from my residence. Whoever created fedex smartpost has to be a frickin idiot! I say that with the utmost respect......
Times12
I'm from Richland NJ, in Buena Vista Township, right outside of Vineland. I got my first Portapros years ago at my new residence in NM. I love them!
How are these for commutes/travel etc? Do they bleed sound out everywhere?
BlakeMorrow
They don't bleed all that much. It's very minimal when compared to a lot of my other open headphones, but they don't isolate either. Stick these on your head and the sound of your environment is not attenuated at all (or almost not at all). You'll have to turn things up to drown out the noises around you, and that will increase your bleed.
OCBob
I can second this. Podcasts leak almost no sound at all, music is a very quiet hum.
Never understood why a portable device has higher than norm impedance.

Icywolfe
They work fine with phones but I amp them with a Fiio for kicks.
-2018
-koss porta pro
...
bskrf
lol
bskrf
The design is outdated but the sound sig is pretty good for modern day especially for the electronic music.
So mine arrived last week....I just can't believve how good this is......I'm simply blown away by these lowpriced amazing sounding headphones.
LX_Emergency
Welcome to audiophile 101 aka Don't Buy Beats
JECKL
Haven't bought beats in my life.
I just received it two days ago. The overall sound is great and the headphones is light so you can actually not fell it. Just a sound leak when the volume is high and not a noise cancelling headphones. The one thing I like the most is the feel of every beat especially the bass. But the total area of the headphones is just enough to cover my inner ear. And last thing is that can be hurtful to ears for a long time of usage.
Over-all performance: 8.5/10
Recommendation: 7/10
Just received. Sound pretty forking good when hooked to my phone. Nice bottom end growl I was not expecting. One semi-serious issue, tho. I have tried two different conventional TRS (tip-ring-sleeve) 1/4 inch adapters so I can plug these into my DAC's and preamps throughout the house. The 4 conductor TRRS (tip-ring-ring-sleeve) plug does not line up correctly with either of them. I get Left/Right out of phase blended mono (no center image, same signal in both ears). Anyone else run into that and have a remedy?

UPDATE: Just tried a third adapter, the one that came with my Sennheiser HD6xx's. It likes that one better. Stereo restored. Of course the other adapters work fine with everything else. Problem solved. (Note: the exact same adapter arrived with my HIFIMAN HE4xx headphones. It works, too.)

UPDATE UPDATE: I now know way more than I ever wanted to about this issue. Added the TRS/TRRS info to the original text. I also found a better solution, one which also addresses the cable length of the Porta Pro X.
These cables from Amazon work well when used together. The first one takes 3.5mm TRRS to 3.5 TRS, dropping the mic channel. 
YCS Basics 3.5mm Smartphone TRRS Headset To TRS Headphones Adapter (Removes the microphone channel)
The second one is a 3.5mm TRS to 6.35mm TRS adapter. It's 3 feet long which also extends the short cable  of the Port Pro.
BATIGE Aluminum 6.35mm 1/4 Inch Stereo Plug Male to 3.5mm Stereo Jack Female Socket Headphone Extension Cable (3ft)
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Thanks for this detailed response, I appreciate it!
Grab yourself a parts-express headband. Search "Parts Express Mini Headphones" - you can remove the drivers that come with it and toss them. The drivers fit directly and you'll have a lot less pressure on your ears. I have never been a fan of the stock band that comes with PortaPros.