5/19/2023 0 Comments Jriver reviewThe control is detented, offering a tactile click as you turn it.Īround back, you’ll find the USB connection, as well as an optical output and 2 very substantial brass RCA connectors.īuild quality is exceptional. On the front of the device, you’ll find the 6.3MM headphone output, along with a hardware volume control. A linux version is also available from JRiver’s website, which i would recommend visiting to download the latest version regardless of platform. The CD contains windows drivers to enable the device to play back high-resolution content (OS X and Linux support USB Audio Class 2 natively), as well as JRiver’s media centre software for both Mac OS X and windows. You’ll also find the USB A-B cable, along with some documentation and a software CD. In the box, you’ll find the amplifier itself, nestled in foam. It also features gain independent frequency response, enabling the entire bandwidth of the amplifier to be used regardless of the volume level. The TPA6120A2 is an ultra-low distortion (0.000635% THD, 1KHZ, half rated power), 1.5W per channel headphone amplifier offering up to 128DB of high dynamic range, as well as an extremely low noise floor. The headphone amp is a class AB design, employing the Texas Instruments TPA6120A2 current-feedback amplifier chip. A colour LED status display shows the bit-depth and sampling rate of the current source. The UA1 uses the Burr-Brown PCM1794a DAC, and can support sampling rates of up to 24-bit, 192KHZ, with higher sampling rates supported via high precision conversion using the included JRiver Media Centre software. And it’s not just high resolution music – with the advent of higher quality music streaming services, and the acceptance of the computer as a genuine hi-fi playback medium, there has never been more demand for a high quality playback solution both for at home and on the go.Įnter the Acoustic Research UA1 – a tiny, bus-powered, high resolution DAC with integrated headphone amp, featuring an asynchronous USB interface and the same M-Class audio engine as found in Acoustic Research’s M1 high res music player. This entry was posted in Accessories DACs Headphones Portable Audio and tagged Acoustic Research on by Ashley (updated on May 15, 2015)Īs high resolution music becomes even more prevalent, music fans are seeking solutions to play back their high-res albums not just on their hi-fi systems, but on their computers too.
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