Headphones / Earphones
HEADPHONEAMP
headphone amplifiers for audio
Heritage Audio/O.H.M Headphone Amplifier

Heritage Audio / O.H.M Headphone Amplifier

The O.H.M Headphone Matching Amplifier is the first ever impedance matching headphone amplifier to maximize headphone performance.

■Impedance selectable headphone amplifier
・Offers three independent, premium input sources, including balanced inputs, gold-plated RCA inputs, and a professional-quality Bluetooth receiver with Burr-Brown DAC. In addition, the OHM Amp's impedance switch allows you to match the signal output to your headphone impedance, allowing you to get the most out of any headphone, from inexpensive low-impedance earphones to the highest quality audiophile-grade models.

■High-quality, versatile inputs and outputs
・The OHM Amp has two headphone jacks, with separate 6.35 mm and 3.5 mm (1/4-inch and 1/8-inch) jacks on the front, eliminating the need for noise-causing converter adapters. With separate diamond buffers from the acclaimed RAM System 2000 and 5000 models and ultra-fidelity, ultra-low-noise Burr-Brown op amps, this powerful headphone amplifier delivers audiophile-grade response with any headphone.

■A studio-grade headphone amplifier with an audiophile soul

-No expense was spared in the design of the OHM Amp to give you complete control over your output levels. The audiophile-popular ALPS “Blue Velvet” output level potentiometer is the best thing about this beautiful headphone amplifier. You can also chain multiple units together using the built-in pass-through output or use it as a premium Bluetooth receiver. For even more precision, the high-voltage, low-noise 30V power supply is specially designed to deliver incredible power at any impedance, ensuring ample dynamic range, signal-to-noise ratio, and ultra-low harmonic distortion performance. Whatever your use of the OHM Amp, its convenient rubber feet allow it to be used as an elegant tabletop device, or you can mount it on any mic stand in your studio using the 5/8-inch hole drilled in the bottom.

■ Impedance matching to fully realize the potential of your headphones
■ Three independently selectable inputs (balanced, unbalanced, BLUETOOTH)
■ ALPS “BLUE VELVET” potentiometer provides audiophile-grade output levels
■ Burr-Brown op-amps for extremely high fidelity and ultra-low noise response
■ Professional-quality Bluetooth receiver with Burr-Brown DAC (supported codecs: APTX, APTX LL, AAC, APTX HD, SBC)
■ Discrete diamond buffer used in Heritage Audio's high-end R.A.M SYSTEM models
■ Independent 6.35 mm and 3.5 mm (1/4 inch and 1/8 inch) jack connectors (no need for conversion adapters that can cause noise)
■ Through output for connecting multiple OHM amplifiers or using as a premium Bluetooth receiver
■ External low-noise, high-voltage power supply (30V) This allows for incredible power delivery at any impedance, ensuring optimal dynamic range, signal-to-noise ratio, and ultra-low harmonic distortion performance.

■Body dimensions: 170 mm (L) 150 mm (W) 50 mm (H)
■Body weight: 888 g