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KRK KNS-6400 Studio Headphones   

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Whether you are listening to some tracks, or tracking your next recording, the KNS 6400 gives you the famous KRK sound independent of your monitors. ...Click To Read More About This Product

Available 03-08-2017

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Accurate reproduction of your music or mix.

Whether you are listening to some tracks, or tracking your next recording, the KNS 6400 gives you the famous KRK sound independent of your monitors. This closed-back around-the-ear design brings you closer to your music, and the highly isolated surround pads give you the freedom to immerse yourself in the sound without having your monitor mix "escape" into open microphones - and keeps live instruments out of what you are monitoring. Having "One Voice" that consistently gives you accurate reproduction of your music or mix will help you achieve just what the artist intended - especially if the artist is you.

KRK headphones provide a precise listening experience that takes you from personal studio to commercial studio to on-the-go track evaluations - and they allow you to accurately enjoy your music with the consistent voicing philosophy and honest reproduction top producers, studio musicians, performers and engineers have come to trust.

The KNS 6400 offer an incredibly natural frequency response that gives you a reference standard unaffected by your location. Day or night. Studio or home. Without disturbing others. Without compromising your tracks.

  • Voiced to remain true to the character of KRK's class leading studio monitors, developed with 25 years of years of experience in studio sound.
  • The latest reference quality frequency response for closed-back, circum-aural dynamic headphones.
  • Newly developed headphone acoustical system bringing a new level of headphone performance for the first time.
  • Utilizing the latest in acoustic memory foam technology ensures class leading performance in both reproduction and isolation.
  • A new standard in headphone comfort, even over extended periods of use, designed to avoid feeling uncomfortable during long sessions. The special foam conforms to the ear to help ensure an improved fit.
  • Exceedingly accurate, natural and wide frequency response.
  • Large dynamic range with extremely consistent low-distortion detail and clarity.
  • Extended low frequency definition, ensures the bass component of your music is accurately reproduced, and is not lost.
  • Transparent reproduction of high-frequencies, resulting in highly accurate imaging.
  • High-efficiency Neodymium 40mm driver.
  • High durability 2.5m single-sided straight cable with oxygen-free copper wires.
  • Adjustable, foldable driver enclosures provide comfort and portability.
  • Replaceable cable, head, and ear cushions to ensure long product life.
  • Soft carrying case embossed with the KRK logo for travelling engineers, or storage when not in use.

KNS-6400 Studio Headphones

  • System / Design: Dynamic
    Operating System: Closed-back
    Head Coupling: Circumaural (Isolating)
    Voice Coil: Copper-clad aluminum wire
    Driver Type: Low weight neodymium
    Driver Diameter: 40mm
    Sensitivity/Efficiency: 95 dB SPL @1mW
    Frequency Response: 10Hz-22 kHz
    Total Harmonic Distortion: < 0.1%
    Rated Impedance: 36 ohms
    Ambient Noise Isolation: up to 26 dBA
    Long Term Maximum Power Handling 1000mW: (500mW per side as per IEC 60268-7)
    Earcup Rotation: 90 degrees
    Nominal Headband Pressure: 4 N (based on average head size)
    Headband Type: Adjustable / Sprung steel skeleton
    Ear Cushion type: Acoustic memory foam
    Headpad Finish: Leatherette
    Headphone Finish: Black impact resistant plastic
    Volume Control: Detachable / Replaceable low profile inline high quality control
    Cable: 2.5 m, (8.2 ft.), 99,99% OFC detachable
    Connector: Gold-plated stereo 1/8" (3.5 mm)
    Cable Connection: Strain relief managed
    Adaptor: Screw-on 1/4" (6.3 mm)
    Weight without Cable: 202 g (0.44 lbs)
    Net / Shipping Weight
    820 g (1.8 lbs)
    Dimensions: 245mm x 268mm x 94mm
    9.6" x 10.5" x 3.7"

Review Snapshot

by PowerReviews
KRKKNS-6400 Studio Headphones

(based on 5 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 5 customers

Displaying reviews 1-5

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Not worth it

By Flawed Prophet

from Georgia

About Me Experienced



    • Poor Sound Quality

    Best Uses

      Comments about KRK KNS-6400 Studio Headphones:

      I purchased these about 3 years ago and regret it. I'm upgrading now. These headphones have no bass, the sound quality is poor and the volume sucks. Wouldn't buy these again.

      (0 of 1 customers found this review helpful)


      Great headphones!

      By Ben

      from Blaine, MN

      About Me Experienced


      • Clear Sound
      • Very clear highs and mids
      • Very Loud


        Best Uses

        • Amateur Recording
        • Events
        • Performances

        Comments about KRK KNS-6400 Studio Headphones:

        I use these at my church for the drum setup. It has a sound shield around it and is mic'd very well! These headphones block a ton of sound and have very good tones!

        (3 of 6 customers found this review helpful)



        By Scott Paxton

        from Perkasie PA

        Comments about KRK KNS-6400 Studio Headphones:

        I was really disappointed with how thin and tinny these sounded. I've been trying them in the studio for a few sessions now for tracking and everything sounds so harsh and brittle. I switched to a pair of Audio Technica ATH-M50's and found them to have vastly improved bass response and overall, more fullness and definition than the KRK's. On the plus side, they are comfortable and do isolate well, even with a loud drummer.

        In addition, I A/B'd them just using my ipod and an older pair of pretty inexpensive AT's that I had lying around and in that application as well, the KRK's sounded shallow, metallic and really thin.

        (2 of 2 customers found this review helpful)


        nice headphones

        By david chock

        from Undisclosed

        See all my reviews

        Comments about KRK KNS-6400 Studio Headphones:

        These are good in terms of sounds and comfort. I agree a lot of what the first reviewer said... except for the suspicious fact that he says he is an experienced (33 years) engineer yet he says he would actually throw away headphones because of bad cables! They're good for tracking and even mixing. They don't translate as well as good neirfields, but they will work, and especially if used in a rotation of monitoring sources; but that is what any good mixer would do. Present mids and nothing overhyped in the lows and highs.

        (7 of 7 customers found this review helpful)


        Somebody finally got it right.

        By Skot Reed

        from Wichita, KS

        Comments about KRK KNS-6400 Studio Headphones:

        and, it's no surprise it was KRK. I've used KRK V6 and V4 studio monitors for several years now and absolutely LOVE them. So, when I saw they had come out with headphones I was very interested. I've been using SONY 7506/V6 headphones for twenty years and, after comparing them with several brands in the recording studio, swore I'd never use ANYTHING else. My KRK's arrived today and I was first very impressed with the build quality and great features. A detachable, replaceable cord? YES! The attached, coiled cord on the SONY's has always been a design flaw in my book. And, I don't know HOW many pairs of phones, some very expensive, I've trashed in the recording studio after a client has stepped on, and shorted/pulled out, the cable. Next, the KRK's have replaceable ear and headband pads. Another SONY downfall. So,as great as all that is, none of it matters if they don't sound good. I pulled up the mix I'm currently working on, listened to it through the studio monitors "KRK V4's" then put on the KRK phones. VERY comfortable and great ear coverage. With my SONY's at hand, and ready to run a comparison, I hit play. The SONY's never came out of the bag. The KRK's sound EXACTLY like what I get from their studio monitors. There were none of the "well, maybe a bit odd in the mids or bass-heavy" thoughts. These things are amazing, and that's a tragic understatement. NO distortion at WAY too high volume levels, clarity to spare, and the most incredible fit/feel of any phones I've ever used. Sorry SONY. I'll always love ya but KRK just took your job. Final thought... GET THESE NOW!

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