KLH Ultimate One Open-Back Over Ear Headphones (Ebony)

Model: KLHF00038 UPC: 818031010307 Item: 173296


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Product Information

The KLH Ultimate One is a premium, high-performance, Over-Ear, Open-Back dynamic headphone for true high-fidelity stereo listening via either a wired 3.5mm or 1/4” adapter connection.


  • 50mm Pure Beryllium Driver.
  • Headband & Earpads use premium lambskin and top-grade cowhide leathers with dual-layer memory foam for ultimate comfort and maximum durability.
  • Solid, Real Ebony wood earcups for eye-catching beauty and acoustic integrity.
  • Extremely comfortable and lightweight at only 12 ounces/340grams.
  • 32 Ohm impedance
  • 97 dB sensitivity
  • Frequency response: 18 Hz to 22kHz +/- 3db
  • 108 db SPL
  • 2 meter detachable, 3.5mm pure silver-litz braided cable (¼” adapter included)
  • KLH Branded, hard-sided black leather travel case plus a luxuriously soft velour carry bag.
  • 2-year Warranty



  • Over-Ear, Open-Back Design
  • 50mm Pure Beryllium Driver
  • Headband & Earpads: Lambskin Inner For Ultimate Comfort, Cowhide Leather Outer for Durability
  • Real Wood Earcups
  • 32 Ohm Impedance
  • 108 dB SPL
  • 1.8 mW Input Power Max
  • Frequency Response: 18-22kHz
  • 2 Meter Cloth Covered Cable
  • 3.5mm to 1/4in Adapter
  • Cloth Travel Bag
  • Black Leather Hard Carrying Case

What's in the Box

 What's in the Box

  • Ultimate One Headphones
  • Hard Shell Black Leather Carry Case
  • Cloth Cinch Bag
  • 2 Meter – 3.5mm cord
  • 3.5mm to .25” Adapter




Customer Reviews for KLH Ultimate One Open-Back Over Ear Headphones (Ebony)

5.0 / 5.0
4 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Great sound
The KLH Ultimate One headphones are very nice and detailed. I was wanting an open back headset that sounded great, was comfortable, and a fair price. These checked all the boxes. They also came with a nice case and a slick working cable with a spring protector to protect it from breaking. The sound is very well balanced. I was worried about this coming from Grado phones, but these are neutral sounding with better bass than the Grado 125. Service and shipping from World Wide Stereo was excellent, very happy with my purchase.
May 14, 2020
5 months ago
They are a very nice clear sounding headphone with very good bass characteristics.
April 28, 2020
Upgrade from Koss ProDJ100
My Koss ProDJ100 have been my go-to headphones for several years and with upgraded ear pads were very enjoyable. These however are more listenable on every measure. The bass seems more controlled, they are less tiring to listen to for extended listening and well, they look great. I've been so happy with them that I went ahead and bought a dedicated personal music player and stopped using the player on my phone.
September 11, 2019
Buy these headphones, you won’t be disappointed.
I really love these headphones! The sound is very close to headphones that cost twice as much.
August 28, 2019
1 year ago


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Why did you choose this?
World Wide Stereo Store
brand recognition, reviews
Meena D on May 28, 2020
brand recognition, reviews
Meena D on May 28, 2020