Polk Audio UltraFocus 6000i

In-ear noise-canceling headphones with in-line remote and microphone

  • Polk Audio UltraFocus 6000i


  • Polk Audio UltraFocus 6000i

    Close-up of earpiece

  • Polk Audio UltraFocus 6000i

    Shown with included accessories

  • Polk Audio UltraFocus 6000i

    Top view closeup


Our take on the Polk Audio UltraFocus 6000i

by David Brown
Polk Audio

Noise-canceling? Check. Portable? Check. Great sound? Check.

We all like to take our music everywhere we can. But we also want to be free to enjoy it. The Polk Audio UltraFocus 6000i headphones deliver on both counts. A compact, in-ear design means these pocket-sized headphones can accompany you everywhere. Their powerful noise-canceling circuitry prevents external distractions from encroaching on your favorite tunes. And because they've got Polk's highly respected audio pedigree behind them, you can count on plenty of detail, clarity, and punch from whatever music you feed these ultra-portable noise-canceling headphones.

Read more

Let in external noise on your own terms

Sometimes, you need to block out the world. Other times, you need to hear what's going on. That's why the UltraFocus 6000i headphones offer a couple of cool features to keep you tuned in when and where you need to be. The push-to-hear ambient control button is made for moments when you need to have a quick conversation. It automatically mutes your music while the built-in noise-canceling microphones pass external sound through to your ears. It's perfect for answering a quick question from a coworker in the office or asking the flight attendant for another drink.

What about those times when you want to block some noise, but still be aware of your surroundings? That's when you'll want to engage "feed forward microphone" mode. This allows some external sounds to pass through to your ears, while providing enough noise-canceling power to hear your music. It's great for busy city streets so you can hear traffic, or empty streets so you know when someone is approaching.

Built-in remote and mic for Apple devices

If you have an iPhone®, the UltraFocus 6000i headphones are ready for double duty. Not only can you control music playback and volume with the built-in three-button remote, you can take calls as well with the built-in microphone. With so many features packed into such a small headphone at such a great price, the UltraFocus 6000i make an excellent iPhone companion for anyone who spends lots of time on the road or on the go.


  • compact, in-ear design
  • active noise-canceling technology minimizes external distractions
  • push-to-hear ambient control button mutes your music so you can have brief conversations
  • Feed Forward microphone feature allows you to hear some outside sounds without interrupting your music
  • in-line three-button remote for controlling music playback with an iPhone, iPad, or iPod
  • built-in microphone for taking calls with an iPhone
  • Dynamic Balance® drivers for low distortion and extended, full-range sound
  • 56" tangle-resistant cable
  • frequency response: 8-25,000 Hz
  • sensitivity: 115 dB
  • impedance: 16 ohms
  • warranty: 1 year
  • Our 60-day money-back guarantee
Included accessories:
  • 7 pairs of interchangeable ear tips: 3 pairs of silicone tips, 2 pairs of flanged silicone tips, and 2 pairs of memory foam tips
  • airline adapter
  • clothing clip
  • protective carrying case
  • one "AAA" battery

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
Fit Style In-ear
Earcup Type Closed
Noise-canceling Yes
Bluetooth No
Frequency Response 8-25k Hz
Sensitivity 115 dB
Impedance 16 Ohms
Weight 1.1 ounces
Cord Length 56"
Airline Adapter Included Yes
iPod Control Yes
Volume Control Yes
Built-in Microphone Yes
Parts Warranty 1 Year
Labor Warranty 1 Year
Product Research
What's in the box?

Download owner's manual

  • Noise canceling in-ear headphones with attached 52" cable (has in-line remote control/microphone and control module with right-angle 3.5mm plug)
  • One AAA alkaline battery
  • 2 Pairs of StayFit 3-flange silicone ear tips (small/large)
  • 2 Pairs of memory foam ear tips (small/large)
  • 3 Pairs of StayFit silicone ear tips (small/medium (installed)/large)
  • Airline adapter
  • Clothing clip
  • Semi-hard storage case
  • Owner's Manual (Eng/Fren)
  • 2 Quick Fit Guides (Eng + Fren)
  • Online Product Registration sheet

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.


Overview: The Polk Audio UltraFocus 6000i in-ear headphones are made specifically for iOS devices. The in-line 3-button remote control/microphone work with your iPhone, iPod, and iPad for controlling your music, videos, and phone calls. Active Noise Canceling shuts out ambient noise, so all you hear is your music or phone call. The UltraFocus 6000i comes with a wide assortment of ear tips, an airline adapter, and a semi-hard storage case.

Optimized Active Noise Canceling: Active Noise Canceling technology uses sophisticated audio algorithms to dramatically reduce distracting outside noise by up to 15dB. ANC technology, combined with Optimized Active Tuning, creates an interior soundstage that sounds comparable to your home audio system. The Active Noise Canceling circuitry is powered by the supplied AAA battery, which provides 40-60 hours of listening. In addition to the ANC technology, the Passive Isolation technology of the sealed ear-canal design naturally minimizes external sound while boosting bass response.

Active Dynamic Balance Drivers: The 13.6mm drivers are made of PET, a lightweight, but durable material. These Active Dynamic Balance drivers are sealed into a micro-enclosure, and tuned and fitted to eliminate unwanted resonances.

Push-to-Hear Ambient Control: For those times when you temporarily want to hear external sounds, the UltraFocus 6000i's Push-to-Hear Ambient Control will instantly mute the audio signal while amplifying outside sounds to let you hear what's going on. This convenient control lets you hear and carry on a conversation without having to remove the headphones. The Push-to-Hear button is located on the in-line control module.

Attenuation Switch: The control module has a two-way switch that allows you to attenuate the audio signal by -10dB. For normal listening, the switch should be in the "0" position. If you are connected to an audio source with an excessive high level, such as an airline audio jack, you can switch to the "-10dB" position to attenuate the signal to a more listenable level.

Flat Audio Cable: The headphones are equipped with a flat, flexible planar audio cable which resists tangling. The low-friction coating on the cable helps prevent contact noise from distorting your music. The cable features StrainGuard Kevlar core technology to prevent the wire from being pulled apart at high strain areas. The headphones are terminated with a gold-plated 3.5mm connector that has been designed to fit through the opening on most smartphone and portable audio player cases. An airline adapter, with dual 3.5mm plugs, is also included.

Multiple Ear Tips: The headphones come with multiple sizes and styles of ear tips. Properly fitted ear tips help you to eliminate extraneous noise, experience greater bass response, and enjoy better tonal balance. Correctly-fitting ear tips also feel more comfortable. Polk includes three pairs of StayFit Silicone Tips (small, medium, and large), two pairs of Stayfit 3-Flange Silicone Tips (small and large), and two pairs of Memory Foam Tips (small and large).

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Polk Audio UltraFocus 6000i Reviews

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4 out of 5

Good choice

Written By MikeM, Palmyra, Va on Tuesday, September 02, 2014
While i had liked an over the ear brand when after several years a hinge broke they would only give me $50 on an electrical working unit with a broken hinge. I tried the Polk audio ear buds and gound them comfortable and good at noise reduction even on an aircraft. I do like them and also find them much dasier to store while traveling.
Small size, good noise reduction, a variety of ear-plugs, I found an earplug I liked
i did drop an ear plug but fortunately found it. if this had been in an airport it would be gone
1 out of 1 people found this helpful
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4 out of 5


Written By Alan, Chicago on Sunday, May 11, 2014
Crutchfield Customer Review (What's this?)
Bought this earphones as a Xmas present fro my partner! After having issues with another vendor, I decided to buy them from Crutchfield. Got them in the time frame they specified, and so far my partner is very happy with them. Thanks!
They are working as described, sound great, comfortable , and Noise reduction functions great.
None so far!
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"Coolness Factor"
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5 out of 5

polk audio ultra6000i

Written By k, chicago on Thursday, April 03, 2014
Crutchfield Customer Review (What's this?)
I have mine for 3weeks now and I luv it.i think its pretty good headphone out there..and you never go wrong wd crutchfield I accidentally broke mine and I call crutchfield and they will send me new one for free.....I will not hesitate to buy my electronics needs again from crutchfield they give me confidence ....thanks jack and thanks crutchfield. .....
2 out of 2 people found this helpful
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"Coolness Factor"
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4 out of 5

Polk 6000

Written By TRW, Lubbock, TX on Friday, February 28, 2014
Crutchfield Customer Review (What's this?)
These earbuds are very comfortable once you find the correct size pads, very good sound quality with excellent noise reduction.
Excellent sound with plenty of punch
1 out of 1 people found this helpful
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5 out of 5

Excellent noise cancelling headphones!

Written By itim, Fort Worth, TX on Wednesday, July 24, 2013
These headphones sound really great. I listen mostly to rock and heavy metal and the bass response is the best by far that I've heard from any headphones that I've used (Sennheiser HD595, PX100, Bose Tri-Port, Apple earbuds). It sounds like you have a dedicated subwoofer inside your head! I also listen to classical, jazz and some pop music and so far I haven't been disappointed with the performance of these headphones. From lows to mids and highs, the frequency response is very good throughout.

Noise cancellation is also very good though I have not had the chance to use these in an airplane. For everyday use in the office, they work pretty well. Of course, it can't completely eliminate background chatter but combined with the noise isolating buds and high enough volume, I feel like I'm alone in the room listening to my tunes. The battery also lasted a few weeks with normal use in the office for a few hours a day.

I chose this over the AKG K391 NC because of the replaceable batteries (vs. rechargeable), the advertised better lower frequency response (8Hz vs. 12Hz), lower impedance (16 vs. 32 ohms) and talk-through feature. Although the 6000i can't be used anymore when the battery dies, I wouldn't want to use the K391 without the NC feature. Simple solution is to bring at least one spare AAA battery and you're up and running again. Also, I don't know how long the rechargeable battery will last in the K391 and if it is replaceable.

I highly recommend these headphones
- really good sound quality - lots of bass - noise isolating + active noise cancelling - very comfortable to wear all day - iPhone controls (also works with MacBook Retina) - Push-To-Hear Ambient Control (no need to take off earbuds to hear outside sounds) - slim plug can be accommodated by most if not all iPhone cases - high quality carrying case - good battery life - replaceable battery (no need to be tethered to a charging device, just replace and go! - no waiting) - tangle-free fla
- build quality of the battery compartment/control circuit can be improved (cables and earbuds are really good) - does not include home theater adaptor (as per Polk website and as of this writing, it's included)
18 out of 18 people found this helpful
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1 question already asked

Can these be used with other non-iOS devices like an mp3 player or computer? [ RonJon  Jan 15, 2014 ]
3 answers
  • Can these be used unplugged but with active noise canceling on? [ E Yun   Jul 16, 2014 ]
  • Certainly. These can be used with any device - however, the mic and remote are only compatible with iOS devices. [ Jeff Staff  Jan 16, 2014 ]

For a more in-depth review and enhanced detailed information on the Polk Audio UltraFocus 6000i, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_107UF6000I/Polk-Audio-UltraFocus-6000i.html ).