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Sennheiser adidas MX 680

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MSRP $49.95
This product is no longer available at HeadRoom.

No longer is pain a gain when it comes to your rockin' exercise or active-use earphones. The high-performance Sennheiser MX 680 stereo earphones with 'EarFin' earbud holding system are ideal for any sporting activity and feature tough construction that is fully sweat and moisture-resistant. The ingeniously soft, pliable EarFin fit design stays secure and comfortable during the most intense workouts you can muster. Variety of ear-fit adapters (S/M/L) included so you can perfectly customize your comfort.

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Product Features:

  • Stable, secure 'ear-fin' fit ideal for active-use applications
  • Tough Kevlar-reinforced construction design withstands sweat, moisture and heavy-duty use
  • Built-in volume control and great array of accessory eartips included
  • Free 2-year Sennheiser manufacturer's 'repair or replace' product warranty

What's In The Box:

  • Foam earpads
  • Sennheiser 'EarFins' - S/M/L sizes
  • Air cushion earpiece adapters
  • Housing fit rings
  • Extension cable with volume control housing
  • Sennheiser soft storage / travel pouch


Now you can run further faster or workout harder; the Sennheiser/adidas MX 680 Sports earphones helps you achieve both. The unique 'ear fin' structure offers soft, pliable easy eartip fit into the outer ear, meaning you'll still hear whats going on around you. The MX 680 high-output drivers deliver a powerful and energizing stereo sound, motivating you while you run that extra mile or lift the newly-added pounds on your curlbar. The MX 680 earphones have been designed and tested for heavy-duty activities and extreme use. All strain relief joints are made of a highly-flexible shock-absorbing material while the cable construction is Dupont Kevlar-reinforced, offering unmatched strength and durability of cord cabling at all stress points. So even under the toughest of conditions, e.g. our Montana -20 degree Celsius winter mornings, the Sennheiser MX 680 Sports have been found to function well and maintain their flexibility.

The Sennheiser MX680 short cable allows for a hassle-free experience especially when you wear your audio player around your neck or on your arm strap. However, you may attach the inlcued extension cable -- which comes integrated with a volume control -- whenever you require added cable length. The MX 680 Sports also feature a unique moisture protection system - it protects the sound system from sweat and water, no matter how heavy you work out (and sweat) or how heavy the rain may be. The strong 2 year manufacturer's warranty is standard ONLY when purchased from true Sennheiser-verified headphone dealers -- like HeadRoom.


  • Microphone: No
  • Connector Type: 1/4
  • Weight: 0.42 oz w/o cable
  • Isolation: -6dB ~ -10dB
  • Detachable Cable: No
  • Driver Type: Dynamic
  • Impedance @ 1kHz: 16 Ohms
  • Cord Length: 4ft
  • Cord Type: Straight Y
  • Coupler Size: Small
  • Ear Coupler Type: Earbud
  • Headphone Type: Earbud
  • Manufacturer Warranty: 2 Years
  • Sensitivity: 118dB

Reviews At A Glance
2 Reviews

Average Rating 
(Showing 2 of 2 reviews)

I just love it!!
Posted by Edi1511 from Melaka, MSIA on 2011-11-03

Recommend Product: Yes
Pros: Great for energytic music.
Cons: Totally not for classical music.

Solid bass & treble richness. I've try with many demonstrations musics, what can I say the SPL already proven as in its technical data. There are differences when I using compressed & original audio files. The best in earphones you can get for audio monitor with great price.....

Sound Quality
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7 out of 9 people found this review helpful. Did you?

Well done active earbuds
Posted by Mishalex from New York, NY on 2011-08-24

Recommend Product: Yes
Pros: Really good overall sound considering the price
Cons: Not the best construction; uncomfortable

Overall, I've never been thrilled with earbuds. But these earbuds surprised me. Solid bass tones and overall smooth sound without the need to keep the volume cranked was quite good. I was actually surprised you could get decent sound and isolation with a simple earbud (as opposed to the far more expensive "in-ear monitor" type). Also, they really don't leak sound. So if you want to be considerate to people around you, they are a pretty good option, and offer good sound for the price (especially at $50 on Headroom).

Unfortunately, there are also many cons to this product. For one (and this is a general problem with earbuds), the wires aren't well insulated, and even if you're careful, this headset probably won't last you more than a year or two due to accumulated wire damage. Also, the earbuds are rather uncomfortable, and even with the "EarFin" design, they will STILL fall out of your ears if you are doing jumping jacks, jumping rope, burpees, or anything else involving a vertical leap. I'm no longer that intense with my own training, but if you like to exercise vigorously, this might not be as good an option as a "behind the neck" type headset (though as long as you're just running, they should stay put). Finally, the treble has a tendency to sound a tad washed out, and is overpowered by the bass on some songs. You might have to adjust your levels manually on your MP3 player for the optimal sound experience. Personally, I've never been a fan of HUGE bass sound that close to the eardrum. Also, if you are really picky about rich treble sound, you might be dissapointed with the frequency response for the richly textured melodies of certain classical compositions. Personally, as much as I love classical music, I don't really listen to it much when working out.

Overall, this headset is definitely worth the $50 pricetag on Headroom, but I would NOT shell out the $80 full price they cost at many retail outlets. At the higher price, there are many better options from Etymotic, Klipsch and Denon. Still, a great workout headphone, and probably my favorite that I have used for this purpose so far.

Sound Quality
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31 out of 35 people found this review helpful. Did you?

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