KLH Ultimate One Over-Ear Headphones

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Ultimate One

The Ultimate One Headphones from KLH Audio feature an over-ear, open-back design with 50mm pure beryllium drivers.

The headband and ear pads feature soft lambskin inner sections for ultimate comfort, with cowhide leather outer sections for lasting durability. Real sustainable ebony wood ear cups, with a frequency response rated at 18Hz-22kHz.

Ultimate One also received an Outstanding Product review from Hi-Fi News (November 2019). Highly recommended.

Features & Specifications

  • Over-Ear, Open-Back audiophile design
  • Large, 50mm Pure Beryllium Driver for musical response
  • Lambskin covered earpads for supreme comfort, leather covered band for durability
  • Frequency range of 18Hz-22kHz +/-3dB for accurate response
  • Sensitivity 97dB/1mW, Max SPL 107dB
  • 2m detachable cord with 3.5mm-6.3mm adaptor
  • Weight 340g
  • Leather hard case and soft travel bag included

More Information

Delivery and Returns

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*Quoted delivery times are estimates and apply to normal working days for in stock items.


KLH Audio
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Headphone Features

Dynamic Driver Size:
Transducer Type:
Dynamic Driver
Ear Cup:
Open Back
Black / Ebony
Headphone Type:
  • Over Ear Headphones
Frequency Range:
18 - 22,000
Cable Length (m):



  • UK from: £1.50
  • EU shipping from: £2.95
  • International from: £3.95
  • View shipping rates for your country here

Payment Methods

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Our Advantages

  • Fast and insured shipping
  • 14 days money back guarantee
  • VAT Free Purchases for non EU residents
  • London Showroom - Largest selection of headphones, earphones and portable players in the UK.