Heritage Audio proudly presents the O.H.M headphone amplifier, designed for studios and audiophiles to fully unlock the potential of your headphones.
Features:
- Output impedance: low, 32, 50, 80, 250, 600 Ohm.
- Alps "Blue Velvet" volume control (Japan).
- Adapts to your headphones to fully unleash their potential.
- Discrete buffers, like in high-quality R.A.M. systems by Heritage Audio.
- Burr Brown operational amplifiers.
- Burr Brown DAC.
- Bluetooth connectivity with aptX, aptX LL, AAC, aptX-HD, and SBC codecs.
- External power supply with low noise level.
- Pass-through output for connecting multiple amplifiers.
Unleash the full potential of your headphones
Whether you want to use a balanced input, RCA input, or a professional-grade Bluetooth receiver with Burr Brown DAC, the O.H.M amplifier offers three independently selectable high-quality input signal sources to fully unleash your headphone's potential. Once the input signal source is selected, the O.H.M amplifier's impedance switch allows you to match the output signal impedance with your headphone's specific impedance to ensure maximum output, whether it's budget low impedance headphones or high-end audiophile models.
State-of-the-art components
The O.H.M amplifier features two different ways to connect headphones: independent 6.35 and 3.5 mm (1/4" and 1/8") jacks on the front panel, so you can forget about adapters that degrade sound quality. Discrete amplifiers borrowed from the highly acclaimed R.A.M System 2000 and 5000 models, and Burr Brown operational amplifiers, provide exceptional playback accuracy and ultra-low noise levels, ensuring that this powerful headphone amplifier delivers audiophile-level sound quality for any headphones.
Precise volume control
Want full control over power levels? When designing the O.H.M amplifier, no expense was spared. The high-class audiophile Alps "Blue Velvet" output level potentiometer is a highlight of this excellent headphone amplifier. You can even connect multiple devices to each other using the built-in pass-through outputs or use it as a premium-class Bluetooth receiver.
To make the work even more precise, an external high-voltage power supply with a voltage of 30 V and low noise level was specially designed to provide incredible power at any impedance, ensuring adequate dynamic range, signal-to-noise ratio, and ultra-low harmonic distortion.
Elegant and easily adaptable design
Finally, no matter what you plan to use the O.H.M amplifier for, the convenient rubber feet allow you to use it as an elegant desktop device, and the 5/8 hole at the bottom allows you to mount it on any microphone stand in the studio.
Package includes:
- Amplifier
- Power supply
- Manual
































































