Heritage Audio OHM Variable Impedance Headphone Amplifier






zZounds Gear Experts Say...
With selectable impedance up to 600 ohms, this headphone amp gets the most out of any cans! Connect up to 3 sources: balanced, unbalanced, and Bluetooth.
Overview
Whether you want to use its balanced input, gold-plated RCA input or even its pro quality Bluetooth receiver with Burr Brown DAC, the Heritage Audio O.H.M. Amp offers three independently selectable top quality input sources for your headphones to shine. Once the input source is selected, the O.H.M. Amp's impedance selector allows you to match the signal's output impedance to your headphone's particular impedance to ensure you get the most out of your them, whether they be a set of the cheapest low impedance earbuds around or one of the highest quality, audiophile-grade models.
The O.H.M. Amp also provides two different ways to connect your headphones, independent 6.35 and 3.5 mm built-in jack connections on the front of the O.H.M. Amp are provided so you can finally forget about noisy adapters.
Its discrete diamond buffers, taken from Heritage Audio's highly acclaimed R.A.M. System 2000 and 5000 models, and Burr Brown op Amps for extreme fidelity and ultra low noise, ensure that this mighty headphone amp will deliver an audiophile-grade response for whatever your headphones are.
Want full control over the output level? Heritage Audio spared no expense when designing the O.H.M. Amp. The highly sought-after audiophile-grade Alps "Blue Velvet" output level potentiometer is the icing on the cake of this beautiful headphone amp. You can even chain multiple units together using the built-in pass-through outputs or use it as a premium Bluetooth receiver.
To make things even more… read more precise, an external high voltage, low-noise 30V power supply has been specifically designed for incredible power delivery at any impedance, ensuring an adequate dynamic range, signal to noise ratio and an ultra low harmonic distortion performance.
Finally, no matter what you're going to use the O.H.M. Amp for, its convenient rubber feet will allow it to be used as an elegant tabletop device or the drilled 5/8 hole on its bottom will allow you to mount it on any microphone stand in the studio. The O.H.M. Amp is the first ever impedance headphone matching amplifier that accommodates to your headphones to bring them to their full potential.
- Audiophile-grade output level Alps "Blue Velvet " potentiometer.
- Discrete diamond buffers as seen on Heritage Audio's high-end R.A.M. System models.
- Burr Brown Op Amps for extreme fidelity and ultra low noise response.
- Pro quality Bluetooth receiver (codecs: APTX, APTX LL, AAC, APTX HD and SBC) with Burr Brown DAC.
- Independent 6.35 and 3.5 mm (1/4" and 1/8") jack connectors to forget about noisy adapters.
- Thru output for chaining several O.H.M Amps or using it as a top grade Bluetooth receiver.
- External low-noise, high voltage power supply (30V) for incredible power delivery at any impedance, ensuring an adequate dynamic range, signal to noise ratio and an ultra low harmonic distortion performance.
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The O.H.M. Amp also provides two different ways to connect your headphones, independent 6.35 and 3.5 mm built-in jack connections on the front of the O.H.M. Amp are provided so you can finally forget about noisy adapters.
Its discrete diamond buffers, taken from Heritage Audio's highly acclaimed R.A.M. System 2000 and 5000 models, and Burr Brown op Amps for extreme fidelity and ultra low noise, ensure that this mighty headphone amp will deliver an audiophile-grade response for whatever your headphones are.
Want full control over the output level? Heritage Audio spared no expense when designing the O.H.M. Amp. The highly sought-after audiophile-grade Alps "Blue Velvet" output level potentiometer is the icing on the cake of this beautiful headphone amp. You can even chain multiple units together using the built-in pass-through outputs or use it as a premium Bluetooth receiver.
To make things even more… read more precise, an external high voltage, low-noise 30V power supply has been specifically designed for incredible power delivery at any impedance, ensuring an adequate dynamic range, signal to noise ratio and an ultra low harmonic distortion performance.
Finally, no matter what you're going to use the O.H.M. Amp for, its convenient rubber feet will allow it to be used as an elegant tabletop device or the drilled 5/8 hole on its bottom will allow you to mount it on any microphone stand in the studio. The O.H.M. Amp is the first ever impedance headphone matching amplifier that accommodates to your headphones to bring them to their full potential.
Features:
- Full connectivity including independently selectable balanced, gold-plated unbalanced and Bluetooth inputs.- Audiophile-grade output level Alps "Blue Velvet " potentiometer.
- Discrete diamond buffers as seen on Heritage Audio's high-end R.A.M. System models.
- Burr Brown Op Amps for extreme fidelity and ultra low noise response.
- Pro quality Bluetooth receiver (codecs: APTX, APTX LL, AAC, APTX HD and SBC) with Burr Brown DAC.
- Independent 6.35 and 3.5 mm (1/4" and 1/8") jack connectors to forget about noisy adapters.
- Thru output for chaining several O.H.M Amps or using it as a top grade Bluetooth receiver.
- External low-noise, high voltage power supply (30V) for incredible power delivery at any impedance, ensuring an adequate dynamic range, signal to noise ratio and an ultra low harmonic distortion performance.
Specs
- Dimensions and Weight in Packaging
- Base Item
- Shipping Weight: 4.7 lbs
- Shipping Dimensions: 12 x 11 x 5 in
- Manufacturer Part Number (MPN): O.H.M
Documents and Manuals
For support or warranty questions, please contact the manufacturer:
Email: tech@heritageaudio.net
Web: https://heritageaudio.net/contact/
Email: tech@heritageaudio.net
Web: https://heritageaudio.net/contact/
Reviews
Reviewers gave this product an overall rating of 5 out of 5 stars.
(1 ratings)
Submitted April 14, 2025 by a customer from yahoo.com
"High Quality !"
Verified Purchaser
zZounds has verified that this reviewer purchased this specific product from us.
Super High Quality Headphone Amp . Right away when it Arrived I plugged in one of the Hardest Headphones to drive , My HE400se HIFIMANs ! And Wow ! Iv never heard my HE400se Hp open up like this ! Just Magical ! I have several diff Headphones , and tried them All ! My HD 650s sound so Beautiful with the OHM Amp . To be able to get the power and drive and OHM impedance matchin is Great. The OHM AMP has a super Power and I hate to say this but it’s Far Better then my NEVE RNHP headphone amp ! Wich is crazy to say but it’s the truth . Another great thing about this Amp is the Bluetooth ! It has great connection and is pretty stable . Overall I’m very Happy with this Headphone Amp .the build , the color way and the Top Notch Sound Quality is phenomenal ! And thank you to Zzounds that made it happen with the perfect payment Plan ! You just can’t go wrong ! The heritage audio OHM AMP is priced Right ! It’s less than the Neve RNHP and is superior to the RNHP ! And for cheaper ! And it even comes with a free Gift ! It came with a big round HA Pad to place the AMP on so it’s safe ! Great product ! If you been Lookin just buy it ! It Truly Has an Audiophile Soul in the OHM AMP ! Mixing and mastering or just casual listening is just Great !
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