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Yuin OK1 Earphones

5 out of 5 stars 2 customer reviews

List Price: $299.00
Price: $225.33 & FREE Shipping
You Save: $73.67 (25%)
Only 1 left in stock.
Ships from and sold by HIFIMAN.
  • Enter your model number above to make sure this fits.
  • Impedance:150 ohm (at 1 KHz)
  • Frequency response: 20-24,000 Hz
  • Sensitivity:109 dB (at 1 KHz)
  • Headphone amp or high output portable player required
  • Maximum Input Power: 1000 mv
2 new from $225.33

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$225.33 & FREE Shipping Only 1 left in stock. Ships from and sold by HIFIMAN.

Technical Details

  • lightweight

Compare to Similar Items

This item: Yuin OK1 Earphones
Yuin PK3 Earbuds B002OGEP2M
Yuin Pk2 Earphones B001B484D4
Yuin Pk1 Earphones B001B41X7I
Customer Rating 5 out of 5 stars (2) 4 out of 5 stars (106) 4 out of 5 stars (46) 4 out of 5 stars (18)
Price $225.33 $35.59 $73.55 $155.00
Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping
Sold By HIFIMAN E-Cyber Deals E-Cyber Deals HIFIMAN
Color Black black black Black
Fit In-Ear In-Ear In-Ear in-ear
Dimensions x x x x x x x x
Item Package Weight 0.33 pounds 0.25 pounds 0.25 pounds 0.4 pounds
Special Features lightweight lightweight lightweight Hifi headphone can grade sound stage,
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Product Description

* Earbuds / In-ear Earphone Convertible design * Neutral sound signature * Best high extension in earphone product

Product Details

  • Shipping Weight: 5 ounces (View shipping rates and policies)
  • ASIN: B001MQ22XO
  • Item model number: Yuin OK1
  • Average Customer Review: 5.0 out of 5 stars  See all reviews (2 customer reviews)
  • Amazon Best Sellers Rank:
  • Product Warranty: For warranty information about this product, please click here
  • Date first available at Amazon.com: November 30, 2008

Important Information

Seller Warranty Description
Warranty Policy: 30 days refund: shipping cost is not refundable. 1 year replacement. The cost to ship a product back to us for repair, replacement, refund, exchange or upgrade is the responsibility of the consumer. The cost to return the product to the consumer is the responsibility of Head Direct/HiFiman.

Customer Reviews

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Top Customer Reviews

Verified Purchase
Look, you want perfect sound, you need isolation from noise. For that you need an IEM, but anyone who spends a decent amount of time listen to them knows, you're ears will ache eventually. Now sure you can pay a bit more and get a custom made earpiece, but really, you bring that thing into the office with you and you're gonna look like an idiot.

These ear buds look like anything you might buy anywhere. You plug them in and no one would know them from something that came in the box with their phone or i-whatever. But you'll know...you'll know because it will seriously sound like the musician just unpacked his instrument, and started playing it right in front of your desk. These things meld with the sound in the room like open air cans do, so you don't get sound isolation, but if you're at work, you don't really want that. They isolate enough not to bother the guy in the desk next to you, but if he turns to get your attention you can still hear him. They are perfect from an office politics standpoint.

Considering that they aren't IEM's the sound quality is magical. Open, precise, neutral, and transparent. A little base light but nothing that can't be fixed with a little EQ there if you prefer a little more thump. They don't distort no matter how much base you throw at them.

Sure they are high impedance and they need to be driven hard. You can still hear them fine without an external amp, but they are going to be noticeably quieter then most any other earbud you could buy, and if you want to hear their full potential you simply need an amp. Most would say you need an amp no matter the sensitivity or impedance of the headphone/bud...but I see it as all relative and these simply relatively need an amp.
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Verified Purchase
These earbuds deserve more publicity than they get. I agree with the existing review that the fidelity, given that they are earbuds (outside the ear) is amazing..and you can use them all day. I started with a pair of PK 1's after my wife researched and tested all sorts of devices and came down on these. The OK1 seems more sensitive than the PK1; high frequencies can be pretty bright; and as noted by the reviewer and others, the base is a bit light.
Use an amp, for reasons noted by reviewers.
Two complaints: one minor. L and R are not marked; you'll have to figure that out yourself (how dumb). More significant, there are extensions for in-ear listening but they don't work. The anatomy of the ear requires some twisting and these just stick out from the buds. Lots of options but all completely useless. .Also be a little careful: I stepped on my PK1's and that was the end of that (expensive) pair (though it kept working for a few weeks.
Still, this is money well spent.
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