SKU: 98231995219

Heritage Audio OHM Impedance-Matching Headphone Amplifier

Sale price$359.55 Regular price$399.50
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Ships within 48 hours · Estimated delivery Sep 16 - Sep 21

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Description

Heritage Audio OHM Impedance-Matching Headphone AmplifierHeritage Audio has changed the game of headphone amplification with its revolutionary O. H. M. Amp, the first of its kind to offer a combination of impedance matching amplification, three independently selectable input sources, and both 6. 35mm and 3. 5mm built in jack connections to ensure you receive the highest level of sonic performance from your headphones. Whether you rock top of the line cans or budget friendly buds, this amp houses the

Heritage Audio has changed the game of headphone amplification with its revolutionary O.H.M. Amp, the first of its kind to offer a combination of impedance-matching amplification, three independently selectable input sources, and both 6.35mm and 3.5mm built-in jack connections to ensure you receive the highest level of sonic performance from your headphones. Whether you rock top-of-the-line cans or budget-friendly buds, this amp houses the necessary components for dynamic, crystal clear audio, including the discrete diamond buffers commonly found on Heritage Audio’s high-end R.A.M. System models, Burr-Brown op-amps for ultra-low distortion and high-fidelity audio performance, and the coveted Alps “Blue Velvet” potentiometer that gives all audiophiles full control over their output levels. As if the O.H.M. Amp wasn’t already bursting with top-notch sonic aptitude, Heritage Audio also included a thru output that allows for chaining options or Bluetooth receiver capability and a 30-volt power supply to provide dynamic range, adequate signal-to-noise ratio, and strong power delivery with low distortion at any impedance. A true trailblazer in the audio sphere, Heritage Audio’s O.H.M. Amp will push your headphones to their optimal performance level and deliver an exceptional listening experience.

Innovation at its core

Heritage Audio’s O.H.M. Amp is built around three foundational components to support your headphones in achieving peak sonic production: First, the O.H.M. Amp offers three top-quality, independent input sources — a balanced input, a gold-plated unbalanced RCA input, and a Bluetooth receiver with Burr-Brown DAC. It then allows you to dial in the impedance level that best matches your particular headphones, with a range beginning at “low” impedance output and capping at 600 ohms. Lastly, the O.H.M. Amp includes two independent 6.35mm and 3.5mm jack connections for your headphones, meaning that you can ditch those noisy, staticky third-party adapters in favor of direct audio bliss.

Features

  • A pioneer in impedance-matching headphone amplification that brings headphones of all quality levels to their full potential
  • Full connectivity via independently selectable balanced, gold-plated RCA unbalanced, and Bluetooth inputs
  • Independent 6.35mm and 3.5mm jack connections provide multiple ways to connect headphones without adapters
  • Diamond buffers, as seen on high-end models, deliver audiophile-grade sound
  • Includes Burr-Brown op-amps for high fidelity and low noise response
  • Alps “Blue Velvet” pot provides full control of the output level
  • Thru output allows for chaining or use as a top-grade Bluetooth receiver
  • Low-noise, high-voltage 30V power supply offers a dynamic range, adequate signal-to-noise ratio, and powerful delivery at any impedance level
  • Contains rubber feet for tabletop setup and a 5/8-in. hole for mic-stand mounting

Specifications

  • Type:Headphone Amp
  • Input Channels:1 x Stereo
  • Analog Inputs:2 x Dual RCA Stereo, 2 x 1/4"-XLR Combo (L/R)
  • Analog Outputs:2 x 1/4" TRS (Thru L/R)
  • Headphones:1 x 1/4", 1 x 1/8"
  • Other I/O:Bluetooth, Codecs: APTX, APTX LL, AAC, APTX HD and SBC
  • Controls per Channel:Impedance Selector
  • Form Factor:Desktop
  • Power Supply:30V DC 400mA power supply (included)
  • Manufacturer Part Number:HAOHM
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 98231995219

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S
Fort Morgan, US
★★★★★ 5
Not polyester! Thank you UA!
I never realized shopping for cotton socks in 2024 would be so difficult. Luckily I found these, and all the other Under Armour cotton socks and they are the best. I cannot wear polyester, and these only have like 1%. I didn't realize our cotton is being replaced by polyester, and I don't like it. Bath towels don't work anymore either... I need my cotton socks and towels, I love incandescent light bulbs, I'll always have a gas powered mower and leaf blower. Also butterfinger should've never their recipe. Just sayin...
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Reviewed in the United States on May 4, 2024
J
Verified Purchase
Josie Shmidt
San Leandro, US
★★★★★ 5
Great quality
Size: Large, Color: True Gray Heather Assorted 2 (6-pairs)
The best socks, cotton quality
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 28, 2025
M
Verified Purchase
Mom4two
Bozeman, US
★★★★★ 5
Great sock for everyday
Size: Large, Color: Black/Gray (6 Pairs)
So these are awesome but they are slightly thinner than older versions, shorter too. Just FYI if you a long time UA customer. If you have never had their socks, I love them personally and only like one other brand better. They aren’t overly thick and they allow your feet to breath. I never have sweaty feet in these even in my warm boots. I also like that they don’t cut into my feet or get holes in the toes over long terms. The only reason I’ve thrown these out has been fraying near the ankle or someone (kids) thieving them.
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Reviewed in the United States on December 28, 2019
L
Verified Purchase
LC
Alexandria, US
★★★★★ 5
LOVE THEM!!
Size: Small, Color: (001) Black / Black / Castlerock
LOVE! These socks are so comfortable! I wear a 5 in women's and a 3 in big kid shoes. The small fit me perfectly. I see where some say they run small but I can't say that was an issue for me. They are "snug" but thats what you want with a no show sock. I feel they have support vs the ones i used to buy at Walmart. They are very soft! I am actually buying more today and throwing my other ones in the trash!
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Reviewed in the United States on February 18, 2026
L
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Lucy Mejia
Cuba, US
★★★★★ 5
So will not write down your foot
Size: Medium, Color: (001) Black / Black / Castlerock
I love these socks. They have a little bit of gel on the top of the heel for support in your tennis shoes and so your socks don’t write down. Very good quality.
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Reviewed in the United States on May 6, 2026

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