ACOUSTIC RESEARCH: UA1 Hi-Res USB DAC

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Acoustic Research DAC

They say: AR UA1 Compact Portable Hi-Res USB DAC - £399.99 inc VAT

There are many DACs out there. The UA1 is notable for exceptional sound & build quality and the remarkable power of the built-in headphone amplifier. Includes JRiver Media Centre Mac & Windows

UK is World Launch market for Acoustic Research UA1 Hi-Res DAC / Headphone Amp. Acoustic Research have chosen Japan and the UK markets in which to launch the total rebirth of the 60 year old brand. The UA1 is the first product from the new Acoustic Research Digital and High-End Division.

The 24/192 UA1 is an outstanding DAC, designed to upgrade the sound from any computer, to deliver genuine High-Definition audio and play virtually any HD audio file via headphones, active speakers or Hi-Fi. It even comes with a free copy of the expensive JRiver Media Centre software for Mac and Windows.

A huge amount of work has gone into the design of the digital, analogue AND the power stages.

KEY - 'Best In Class' performance
KEY - Serious headphone driving power and performance with no mains supply needed
KEY - High-grade audiophile components used throughout with exceptional build quality
KEY - Plays WAV, AIFF, ALAC, FLAC, DSD64/DSD128 and DXD
KEY - JRiver Media Centre included for free

As a Compact Portable DAC, the UA1 is USB host-powered so needs no mains supply. The specifically engineered headphone amp is one of the most powerful available on any device like this and is able to drive the most serious headphones.

The small heavy DAC, is constructed of aerospace grade aluminium, with exceptional anti-vibration properties. High-end components are used throughout on a single circuit board. Build quality is exceptional. Damped rubber feet secure the UA1 when used on a desk.

The wide range of file formats playable include
- WAV, AIFF, ALAC, FLAC, DSD64/DSD128 and DXD

Features
- Audiophile-grade ultra-low-jitter asynchronous USB Audio input
- High-quality high-power headphone amplifier to drive high-end headphones
- Analogue outputs for playback through any Hi-Fi or Active Speaker
- Toslink Digital out for digital system integration

- High-precision Alps manual volume control
- LED Status display - Multicolour showing frequency
- Headphone Power (THD < 0.01%) / 32 ohms 400mW + 400 mW / 300 ohms 43mW + 43mW
- Full copy of J-river Media Center for Windows or Mac included (Worth £50)

Acoustic Research M-Class DAC and Power Design
- Genuine lossless path support 16-bit 44.1kHz to 24-bit 192kHz
- Isolated digital and analogue circuits
- Burr-Brown PCM1794A flag-ship class DAC
- Burr-Brown OPA2134 current/voltage line out driver

High power high precision current feedback headphones amplifier
- Texas Instrument TPA6120A2 headphone amplifier in proprietary circuit design
- Ultra low distortion at max output <0.01%
- Supports 16 to 600 ohms headphones
- Ultra-fast slew rate, genuinely responsive to Hi-Res content

Dual High Precision Oscillator
– Accurate clock for 44.1 / 48 / 88.2 / 96 / 176.4 / 192 kHz

Audiophile grade components throughout
– High quality capacitors
– High quality ALPS analogue volume control
– High quality gold-plated brass RCA connectors

Quote: Arex Li - Designer of the UA1
"We had a great DAC, but had to very work hard on the powerful USB-Powered headphone amp"

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