HERITAGE AUDIO O.H.M | Impedance Matching Headphone Amplifier

O.H.M

Headphone Matching Amp

Experience outstanding audio performance with the O.H.M Amp from Heritage Audio, designed to bring out the best in your headphones, whether you’re using budget-friendly earbuds or top-tier audiophile models. This versatile amplifier offers three premium input options—balanced input, gold-plated RCA, and a pro-quality Bluetooth receiver featuring a Burr Brown DAC—allowing you to select the ideal source for your audio setup.

Studio-Grade Amp with an Audiophile's Soul

The O.H.M Amp’s impedance selector ensures a perfect match between the amp and your headphones, maximizing performance and delivering unparalleled sound quality at any impedance level. Choose from two headphone connection options—independent 1/4" and 3.5mm jacks—eliminating the need for noisy adapters and making switching effortless.

At the heart of the O.H.M Amp are discrete diamond buffers, borrowed from the acclaimed R.A.M System 2000 and 5000 models, and Burr Brown Op Amps, delivering extreme fidelity, ultra-low noise, and audiophile-grade performance. Control your output with precision using the highly coveted Alps Blue Velvet potentiometer, a standout feature in high-end audio equipment.

Need flexibility? The O.H.M Amp can double as a premium Bluetooth receiver or link multiple units together via its built-in pass-through outputs. The custom-designed 30V external power supply ensures exceptional dynamic range, signal-to-noise ratio, and ultra-low harmonic distortion, for any audio application.

Whether on a studio microphone stand or elegantly placed on your desk with its rubber feet, the O.H.M Amp is designed for convenience and style. Unlock the full potential of your headphones with the O.H.M Amp—a true game-changer for audiophiles and professionals alike.

• O.H.M Amp impedance-matching headphone amplifier that accommodates the impedance of source audio with your headphones to bring them to their full potential
• Full connectivity including independently selectable balanced input, gold-plated RCA input, or Bluetooth receiver with Burr Brown amp
• Audiophile-grade output level with 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 1/4" and 3.5mm jack connectors eliminating 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

Specifications

• Number of Headphone Channels
  • Single Channel
• Recommended Headphone Impedance
  • 32 to 600 Ohms
• Digital Chipset
  • DAC: Burr-Brown
• Analog Audio I/O
  • 2x Combo XLR-1/4" Balanced Input
  • 1x Stereo RCA Unbalanced Input
  • 2x 1/4" Thru
  • 1x 1/8" / 3.5 mm Headphone Output
  • 1x 1/4" Headphone Output
• Wireless
  • Bluetooth *Built-In
• Power Requirements
  • AC/DC Power Adapter (Included)
• DC Input Power
  • 30 VDC

In The Box

• Heritage Audio O.H.M Headphone Matching Amp
• Power Supply 
• Limited 2-Year Manufacturer Warranty