KRK KNS 6400 Studio Headphones main image

KRK KNS 6400 Studio Headphones

$88.00 to $104.93 Price Tier: Budget

4.5 (21)

4 Reviews

Find out who is using KRK KNS 6400

2 wishlisted

35 saved

Page last updated Jul 04, 2026

Pricing and availability

We compare 600+ stores and found this item at 4 stores. Prices updated July 4, 2026.

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Reviews

Price

4.5 (416)

$104.93

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5.0 (1)

$96.91 1 available New

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4.0 (3)

$99.99

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$88.00

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Average Price: $97

Budget/Beginner

$100

$301+

Price Tier

In the Headphones & In-Ear Monitors category, KRK KNS 6400 Studio Headphones is priced in the Budget/Beginner range. This is great gear to get started with or for creators on a budget.

Budget

Standard

High-end

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Description

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Immerse yourself in the powerful sonic landscape with the KRK KNS 6400 Studio Headphones. These closed-back, around-the-ear headphones bring you closer to your music, with highly isolated surround pads that allow you to dive deep into the sound without any "escape" or interference from the outside world.

Created with the renowned KRK sound, these headphones give you the same level of accurate audio reproduction that you would get from studio monitors. This ensures that what you hear is exactly what the artist intended, making these headphones perfect for music enthusiasts, sound engineers, and musicians alike.

Experience the culmination of KRK's 25 years of experience in studio sound with the KNS 6400, and let it be your reliable partner for all your music endeavors, whether you're listening to your favorite tracks or tracking your next recording.

Key Features:

Voiced to remain true to the character of KRK's class-leading studio monitors
Advanced reference quality frequency response for closed-back, circum-aural dynamic headphones
Features an acoustical system that brings a new level of headphone performance
Utilizes the best in acoustic memory foam technology for superior sound reproduction and isolation
Designed for comfort during long sessions with special foam that conforms to the ear
Provides exceedingly accurate, natural and wide frequency response
Offers large dynamic range with extremely consistent low-distortion detail
Ensures accurate reproduction of extended low frequency and high-frequencies, resulting in highly accurate imaging
Equipped with high-efficiency Neodymium 40mm driver
Comes with a high durability 2.5 m single-sided straight cable with oxygen-free copper wires
Adjustable, foldable driver enclosures for maximum 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
1/4" jack plug can be unscrewed to reveal a 1/8" plug for laptops and portable media players.

Product specs

Brand	KRK
Model	KNS6400 Professional Monitoring Headphones
Finish	Black
Year	2010s
Categories	Over-ear Headphones

FAQs

What is the frequency response range of the KRK KNS 6400 Studio Headphones?: The KRK KNS 6400 Studio Headphones have a frequency response range of 10 Hz to 22 kHz, providing a full and natural sound with good bass projection.
Are the KRK KNS 6400 Studio Headphones suitable for mixing and monitoring?: Yes, the KRK KNS 6400 Studio Headphones are designed for professional monitoring, offering a flat frequency response that is ideal for mixing and critical listening in a studio environment.
Do the KRK KNS 6400 headphones provide good sound isolation?: The KRK KNS 6400 headphones offer excellent sound isolation, making them suitable for use in noisy environments or when you need to focus on your mix without external distractions.
Are the KRK KNS 6400 headphones comfortable for long sessions?: The KRK KNS 6400 headphones feature an adjustable headband and memory foam ear cushions, providing comfort for extended studio sessions.
Can the KRK KNS 6400 headphones be used with portable devices?: Yes, with a 36-ohm impedance, the KRK KNS 6400 headphones can be used with portable devices, though they are optimized for studio use.

Videos

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recordingrevolution

Mixing On Headphones In The Home Studio - TheRecordingRevolution.com

recordingrevolution

Studio Monitors For Your Ears - KRK Headphones KNS 8400 KNS 6400 - Long Version

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Studio Monitors For Your Ears - KRK Headphones KNS 8400 KNS 6400 - Short Version

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KRK KNS8400 Closed-Back Studio Headphones Review

Digital DJ Tips

KRK KNS 8400 Pro Headphones Unboxing & Review

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KRK KNS 6400 Professional Studio Headphones Monitoring DJ

sjp318

Reviews

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PROS

Excellent clarity and natural sound, making vocals and instruments distinct
Detachable, lockable cable enhances durability and convenience
Swiveling ear cups for flexible monitoring
Reveals the quality of the audio source, ideal for detail checking
Doesn't require headphone amps or DACs for adequate drive
Lightweight and comfortable for extended use
Useful for laying down tracks and sound monitoring
Decent value for the price point

CONS

Lacks sufficient bottom end for some genres, affecting mix accuracy
Annoyingly long cable can get in the way
Requires burn-in time to reach optimal sound quality
Ear cushion and padding prone to damage
Only okay isolation, external noises can intrude
Not suitable for bassheads seeking heavy low end

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about KRK KNS 6400 Studio Headphones.

Comparisons

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Described as sounding almost indistinguishable from Sennheiser HD 280, offering similar quality at a lower price point.
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KNS8400 mentioned as a more advanced variant with memory foam pads, implying a difference in comfort and bass response.
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The KNS 8400 is considered alongside other sub-$150 headphones like the Shure SRH840, Samson HD850, Philips SHP9500, Koss Porta Pro, and Beyer DTX350m, forming a budget-conscious "holy grail" collection.
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The KRK KNS 6400 is deemed more portable and slightly bassier than the 8400, which is noted for better home and professional use.
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Users compare the Brainwavz HM5 as a flatter alternative to the KRK KNS 6400, praising its affordability and comfort.
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Features and functionality

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Known for a flat frequency response, making them suitable for studio monitoring and mixing tasks.
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User experience

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Noted for their comfort and decent build quality, with some users eventually moving on due to a lack of sub bass.
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Some users with small to average-sized ears find the existing earpads comfortable over extended use, though experiences may vary based on ear size.
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Owners mention that frequency response charts can be misleading, emphasizing the practical experience over testing data.
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Build quality

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The headphones are noted for their durability, withstanding drops and cable crushing, though cables may eventually require replacement.
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Mods and upgrades

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Owners have added extra padding to the headband and used on-ear felt material inside the cups to alleviate discomfort from shallow earpads and hard metal contact.
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Software and compatibility

0 0

Sonarworks headphone calibration provides a substantial sound improvement, with users finding it hard to revert to the un-calibrated sound.
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Use cases and applications

0 0

The 8400 model provides detailed mid-range information but may not be suitable for creating entire tracks due to bass limitations.
Source

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4.5 out of 5

Based on 4 Reviews and 21 Ratings

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axeldelumen

almost 11 years ago

The $100 bang-for-your-buck studio headphones

SUMMARY (for the TL;DR people out there):

1) Needs a week or so of burn in time. 2) Cable can get a little annoying because of its length. 3) Has all the basic useful features for sound monitoring and detail checking. 4) Durable plastic and very thick cable, but the ear cushion and padding can easily get ripped. 5) Unforgiving of the audio source. If the music is recorded, mixed, and mastered in a shitty way, these will definitely pick that up.

DETAILED REVIEW:

I'll get right to the bottom of things. The KRK KNS 6400 may just be THE dark horse headphone out there for the hipsters who do not want to buy Sennheisers, Audio Technicas, or AKGs for studio use.

They're a great bang for your buck and at $100 you won't be disappointed at all with what it offers:

1) The cable is only one side of your ear and it can be detached as well as locked in. Pretty nifty for going around your studio table and not having to worry about it getting tangled or disconnected.

2) Swiveling ear cups are a huge plus, especially for me. You can listen on one ear only and even rotate the right ear so another person can just stick their head to it and listen to the headphones too.

3) It does not take much to drive these bad boys and it can be connected to just about any audio jack without the need for headphone amps or DACs.

4) VERY REVEALING and will not show mercy to the audio source, nor the the sound quality. This, imo, is very useful especially for picking out details that need to be fixed. If you made shit recordings or mixed the song in a shitty way, YOU WILL HEAR ALL OF IT. If your phone or laptop has a shitty soundcard or if the audio file is of shitty quality, it will show.

However they do have some downsides:

1) The cable is annoyingly long. You can buy a coiled one but its sold separately.

2) You need a fair amount of burn in time before you use it professionally. A week to open it up and get rid of its muddiness and fatiguing highs. About 10 days for me, personally, before I liked what I was hearing.

3) No hard case, although it comes with a nice leather pouch.

4) For all the bassheads out there, this is not the headphone for you. The 6400s are for more of the clarity and detail nitpicking type of people.

5) Isolation is just OK. I can still hear conversations around me when the volume is up at 45-50%. Any screaming or loud noises (e.g. car horns, ambulance sirens, etc.) can still be heard at around 60-75% volume. Outside sound is significantly decreased at 80%, although I would not recommend listening at these levels as continued listening with that volume could cause deafness.

Over all they're a solid set of headphones, and judging by there graphs, they are a relatively flat sounding pair that gives you the power to nitpick your work.

That is all. Thanks for reading! =D