Koss Pro4S Headphones
Koss Pro4S Headphones
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Product Description
Designed for professional musicians who need reference sound, the Koss Pro4S headphones deliver a flat, unbiased response. They feature the all-new SLX40 element inside an aluminum assembly that’s at once durable, comfortable, and lightweight Read More

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MrJAMS
0
May 12, 2020
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This or AKG K361 for neutral detailed sound while walking or listening in public places? Would hooking them up to a Fiio M3K DAP.
May 12, 2020
PaganD
102
Jan 27, 2019
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MD price for this is better than a few years ago which is not surprising. For anyone interested, definitely worth getting, especially if one likes the Koss sound though I would suggest changing out the pads more for comfort than anything else as stock pads aren't the most comfortable for most. Otherwise sound scales well with good accuracy across the spectrum. After all, they are good cans made for monitoring.
Jan 27, 2019
Proced
9
Mar 17, 2019
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What pads do you have?
Mar 17, 2019
gluon
66
Jan 27, 2019
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How these compare to the beyerdinamic dt770's , if anyone knows. Or with let'say the m50x or someother better known things ? Thanks, in case someone answers ☺
Jan 27, 2019
GiantHeadphoneSquid
537
Jan 31, 2019
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For me, the DT770 would be my first choice of the pair for sound profile. They run a very satisfying, if a bit wild, mix of clean extended bass and sparkly, bright highs - very impressive for a closed back of its price point and age. If you can work with the larger size and the extra cost, I'd definitely recommend them.
Jan 31, 2019
gluon
66
Jan 31, 2019
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Cool, i already got them, the dt770 32 ohm. I was contemplating at these koss, but people keep saying they have no sound stage so I guess I'll skip them. It seems this design, with flat cups like m50x and these leaves no room for soundstage.
Jan 31, 2019
Jonathon12
1
Jan 25, 2019
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I have these and at 90$ these are worth it af . They have really good sound imaging . Better than m50x head on head comaprison a must buy.
Jan 25, 2019
Milk-and-Coffee
1
Jul 13, 2018
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Koss markets these as “flat,” and I keep reading reviews where half the folks don’t think they are flat, and the other half thinks they are. Anyone have studio experience with truly flat headphones?-How do these compare?
Jul 13, 2018
EliaGar
62
Jul 9, 2018
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I have medium-sized ears and have no problems with these cans. The pads are comfortable but not especially thick and so they feel closer to my head than other headphones. Not good for hot weather as my ears get too hot in these, but overall I find them comfortable. Sound isolation is exceptional - virtually as good as my AKG's that have active noise cancelling. I find the sound quality on the Pro4-S to be fairly neutral, nicely but modestly extended non-boomy bass, no piercing or shrill upper register. For the price I'm very happy with these. I don't use them much at home b/c I prefer open back cans for quiet environments; I primarily bought them to use in coffee shops and similar public areas where (often bad) music is being played - the sound isolation on the Pro4S is perfect for my use so far. I've read others have had QC problems (soldering), but mine have been rock solid so far.
Jul 9, 2018
PaulT
14
Jul 7, 2018
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As others saying ear cup size is not big enough, coiled cable is heavy and connector is a bit longer than normal. Also for me sound is bad. Avoid this headphones
Jul 7, 2018
andyo
49
Jul 6, 2018
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Can someone comment on those headphones vs. Sony MDR-V6? The price is very similar. I have Sony headphones and they offer a very good quality sound but their cups suck. Need to spend money on a new pair of cups every year or so.
Jul 6, 2018
OCBob
518
Jan 26, 2019
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Exactly. Comfort was improved, but the sound was totally jacked up. I didn't last 2 minutes when I tried them (The BD pads). Yes, if you wear these regularly and you have oily skin/hair the factory pads will wear out regularly, but they are comfortable and they are relatively cheap and easy to replace.
Jan 26, 2019
dwane5
317
Jul 31, 2020
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Heck out yaxi pads for the Sony. The red and blue. Also I have mdr 7506 I Have the brainwavz perforated pad on them. Yaxi may be better tho from what I’ve read.
Jul 31, 2020
Annndy
88
Feb 27, 2018
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Compared to the Koss SP540: I thought the two would be very similar, variations on a single model, but they really aren't. I got the SP540s and was really disappointed. They sound fine to me, but the fit is terrible on my very large ears and they just feel physically cheap. These Koss Pro4s on the other hand, feel very nice to me. They are heavier, and while that is clearly not as good from a long-use comfort perspective, they just feel more rugged and "nicer." I like bass and I'll even admit to being a bit of a bass-head. These don't do the bass emphasis that the SP540 and SP330 do, but I think the bass on these is really quite adequate. I don't feel like these need more bass at all. Actually these produced some bass notes that were so full that they had me wondering if I somehow had the subwoofer playing. That's pretty special and not something I experienced with the "bass emphasized" SP540 and SP330. So if you love bass, consider that info carefully. I haven't even had them an hour yet, but so far the sound is very much to my liking. The frequency response seems relatively flat so they aren't "exiting" right away, but I get the feeling that will be an advantage with time, as I expect these to be better for a variety of music styles, rather than just the one style of pop music to which the equalizations of trendy listening headphones lend themselves. These still don't go all the way around my ear the way the better Sennheiser over-ear models do, but they fit on the outer edge of my ear and are quite comfortable so far. The sound isolation on these is very nice. I really feel that these are a whole step, or maybe even two steps, better than the SP540.
For anyone who happens to find this review and is trying to decide between the two seemingly similar models, I think I would sum up the two new Koss over-ear offerings of 2014 as follows: Koss Pro4s: ruggedly built, pro style, frequency response curve for critical but enjoyable listening, excellent isolation, medium over-ear cups for medium large sized ears but suitable as on-ear headphones for very large ears Koss SP540: light weight, attractive, frequency response curve for fun listening, very good isolation, small over-ear cups for medium sized ears and smaller
Feb 27, 2018
mahee
315
Feb 17, 2018
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Received mine. Great isolation, sound is typical for monitor headphones Ear cup size is not big enough to go around the ear. They are mostly on-ear for me and so ears get sore after a while Earcup shell is metal while headband and yokes are cheap plastic. But it helps weight to be low and helps comfort I would have preferred a straight cable instead of the coiled one it comes with
Feb 17, 2018
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