Heritage Audio The OHM Amp

The Heritage Audio O.H.M (Output Headphone Matching) is an advanced headphone amplifier designed for studio professionals and audiophiles, featuring impedance matching, multiple input sources—including balanced, unbalanced gold-plated RCA, and high-quality Bluetooth with Burr Brown DAC—discrete diamond buffers, audiophile-grade Alps potentiometer, and an external high-voltage power supply to deliver unparalleled sound quality and adaptability.

Engineered for Maximum Headphone Performance

The O.H.M Amp sets itself apart by offering the industry’s first-ever impedance headphone matching amplifier. This feature allows users to fine-tune the amplifier's output impedance to align perfectly with the specific requirements of their headphones. This precision ensures optimal performance, whether the user connects low-impedance earbuds or high-end audiophile-grade headphones.

Versatile Connectivity for Any Setup

Heritage Audio has equipped the O.H.M Amp with three independently selectable input sources to cater to diverse professional and personal needs. These include a balanced input for studio-grade connections, a gold-plated unbalanced RCA input for pristine signal integrity, and a professional Bluetooth receiver. The Bluetooth receiver supports advanced codecs such as APTX, APTX LL, AAC, APTX HD, and SBC, ensuring high-fidelity wireless audio. The addition of a Burr Brown DAC enhances clarity, offering a premium audio experience over wireless connections.

Precision Output and Connection Options

The O.H.M Amp provides two independent headphone outputs—6.35 mm (1/4”) and 3.5 mm (1/8”)—eliminating the need for adapters and reducing the risk of noise interference. This design prioritises convenience and reliability, enabling seamless transitions between different headphone types.

Cutting-Edge Technology for Audiophile-Grade Sound

The amplifier incorporates discrete diamond buffers, a hallmark of Heritage Audio’s renowned R.A.M System models, and Burr Brown operational amplifiers for exceptional fidelity and ultra-low noise performance. Together, these components guarantee a highly accurate and detailed audio response, suitable for critical listening environments.

Unmatched Control and Scalability

The O.H.M Amp features an Alps "Blue Velvet" potentiometer, a sought-after component in audiophile circles, for precise output level control. The pass-through output allows users to daisy-chain multiple units, providing flexibility for larger setups or enabling the device to function as a standalone high-grade Bluetooth receiver.

Power and Precision Redefined

Heritage Audio has included an external 30V high-voltage, low-noise power supply to ensure powerful performance at any impedance level. This tailored power source maximises dynamic range, improves the signal-to-noise ratio, and minimises harmonic distortion, delivering exceptional audio quality regardless of headphone specifications.

Designed for Practical Use

The O.H.M Amp features rubber feet for stable tabletop use and a drilled 5/8” hole on its underside for secure mounting on any microphone stand. This versatility makes it suitable for a range of professional and personal setups, from recording studios to listening rooms.

The Heritage Audio O.H.M is an all-encompassing solution for audiophiles and professionals seeking to unlock the full potential of their headphones. By combining cutting-edge impedance matching, flexible connectivity, and precision engineering, it sets a new standard for headphone amplifiers, delivering an unparalleled listening experience.

• Industry-first impedance matching for optimised headphone performance.
• Three selectable inputs: balanced, gold-plated RCA, and Bluetooth with Burr Brown DAC.
• Discrete diamond buffers and Burr Brown Op Amps for superior audio fidelity.
• Independent 6.35 mm and 3.5 mm headphone outputs to eliminate the need for adapters.
• Alps "Blue Velvet" potentiometer for precise output level control.
• Pass-through outputs for daisy-chaining or use as a high-grade Bluetooth receiver.
• External 30V high-voltage power supply for maximum dynamic range and low noise.

This item, like everything we supply, comes with the complete support of our expert team. Our excellent technicians have been specifying, building and supporting studios for over twenty years. If you have any problems with installation, setup or everyday use, they’re never more than a click away, and always happy to help.

You can contact them here.