The EHP-O2Di is an objectively designed desktop headphone amplifier with USB DAC. It combines the original NwAvGuy designed O2 headphone amplifier with the latest ODAC RevB module designed by YoYodyne Consulting. This O2/ODAC RevB combo unit is powered by the included AC adapter and you can select your required region below.
Awaiting stock of new ODAC RevB DAC modules, shipping expected to resume week commencing 18th May.
The headphone amplifier section has been designed from the ground up with a view to creating an objectively perfect design. This has been accomplished by months of development using top of the range audio testing equipment to fine tune and carefully select the optimum design, layout and components. The specifications achieved speak for themselves.
The high performance ODAC RevB DAC module is based on the SA9023 UAC1 engine and PCM5102A 24 bit DAC chip. It supports 16 bit and 24 bit at sample rates of 44.1kHz, 48kHz and 96kHz as well as 88.2kHz at 16 bit. The on-board filtered power supply ensures that noise is practically non-existent and a high quality on board crystal controlled oscillator is used which further improves overall performance.
- 3.5mm headphone output
- USB digital input
- RCA sockets on rear - double up as the DAC analogue line out & headphone amplifier line input
- Plug 'n' Play - works straight from USB without any additional drivers
Technical Specifications (Headphone Amplifier):
- THD @ 1kHz: 0.0017%
- Noise level (ref 400mV): -105dB
- Power output @ 33Ω : 641mW
- Output impedance: 0.5 Ohms
- Gain: 1x and 3.3x
Technical Specification (DAC):
- THD+N: <0.0024%
- Dynamic range: >112dB A-Weighted
- Audio formats: 44.1kHz, 48kHz & 96kHz @ both 16 bit and 24 bit and 88.2kHz @ 16 bit.
- Compatibility: Windows, Mac, Linux, Android & iPad (with CCK)
- Line output: 2.1Vrms
What's in the box?
- EHP-O2Di desktop headphone amplifier/DAC
- AC adapter suitable for your region (UK, EU or US)
- 1m USB A to USB Mini cable
The EHP-O2Di combines the EHP-O2 and E-DAC which themselves have independently won many awards, including 'Best Headphone Amplifier of the Year' and a clutch of 5 Star/5 Globe awards from Hi-Fi Choice and Hi-Fi World magazines.
Independently, the EHP-O2Di has be awarded the full 5 Globe rating from Hi-Fi World as well as the 'Value' award for being keenly price. The review can be found in the October 2014 issue.
It has also achieved the 'Recommended' award from the independent online news & review site Hi-Fi Pig. The reviewer concluded:
"With a compact and attractive design the Epiphany Acoustics EHP-O2Di is a terrific desktop unit which can be implemented as the main hub for a computer. Whether it's music, games or films through a set of powered speakers or a set of headphones for more intimate listening the EHP-o2Di won't fail to impress... terrific sound to pound performance which is neutral, detailed and involving."