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Studio & Recording
RME ADI-2 DAC
$1,599

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2-channel Digital-to-analog Converter with SteadyClock FS, Extreme Power Headphone Output, Super Low Noise IEM Output, AutoDark Feature, and Remote Control
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Description

The RME ADI-2 DAC is a high-resolution USB DAC designed to deliver premium digital-to-analog conversion and clean headphone amplification for audiophiles, music lovers, and audio engineers in hi-fi setups and home, project, and commercial studios. It supports sample rates up to 768 kHz and is compatible with PCM and DSD sources. Enhanced circuit design yields excellent jitter suppression, expansive signal-to-noise ratios, and low noise.

Route your audio players to the coaxial or optical digital inputs, or connect your computer or iOS device via USB. Stereo XLR and RCA line outputs offer a four-stage reference level selection and provide an easy connection to power amplifiers or active monitors. 1/4" and 1/8" headphone jacks accommodate a variety of headphones from traditional over-ear models to IEMs. The built-in DSP provides adjustable bass, treble, loudness, 5-band EQ, and more.

Additional luxuries include a USB cable, power supply, remote control, and the integrated AutoDark feature, which automatically turns off all the ADI-2 DAC's lights after ten seconds without user operation.

Flexible Sample Rate Support 
Operates at up to 768 kHz via the internal clock or up to 200 kHz via external clocking. DSD and Direct DSD playback are also supported.
Multiple Inputs 
Hook up a CD player, digital mixer, or audio interface to the coaxial or optical digital input. Class Compliance allows you to connect your computer or iOS device via USB.
Enhanced DAC 
More relays, a different double-symmetrical attenuator circuit, and one additional buffer op-amp succeed in achieving less noise and decreased THD. Selectable hardware reference levels allow proper matching with your analog equipment.
Low-Noise IEM Output 
An 1/8" stereo mini-jack accommodates in-ear monitors. Its noise floor is 10 dB lower than the Extreme Power output, and the output impedance is nearly zero Ohms. SNR is 118 dBA while THD remains low. The volume ramp-up and click-free on/off features aid in protecting your hearing.
Selectable AutoDark 
All lights on the ADI-2 DAC turn off after ten seconds without user operation. Touch any button or control on the device to turn them back on for ten seconds. Or, using the remote, press any button on to turn on the lights for three seconds.
User-Friendly Remote Control 
The included remote control features clearly labeled buttons, readable in low light and ergonomically arranged. It boasts standby on/off, volume up/down, input selection, mute, and four programmable buttons, which can be assigned with 22 available functions and commands.
SteadyClock FS 
With SteadyClock FS, the focus was put on reducing the jitter of SteadyClock to new lows by improving its second analog PLL circuit and referencing both Direct Digital Synthesis and PLL to a low-phase-noise quartz crystal. The self jitter measured through DA conversion now reaches levels that usually are only available in master quartz clock mode, while SteadyClock still always runs in PLL mode. The sound remains the same regardless of internal or external clock mode. The low-phase-noise oscillator driving the updated circuit reaches jitter specs lower than a picosecond—an area called FemtoSecond, hence SteadyClock FS.
Built-In DSP Processing 
DSP processing includes controls for bass, treble, loudness, 5-band parametric EQ, crossfeed, width, M/S mode, polarity, oversampling filters, and more. DSP functions are bypassed when in DSD mode, which offers output to the USB and analog jacks.
In the Box
RME ADI-2 DAC High-Resolution USB DAC
  • Remote Control with Battery
  • 6' / 1.8m USB Cable
  • External Power Supply
  • Power Cable
  • Limited 6-Month Warranty

Technical Specifications

System Requirements Mac OS X 10.6 or later
Intel Core i3 or faster CPU
USB 2.0 or 3.0 port

Windows 7 or later
Intel Core i3 or faster CPU
USB 2.0 or 3.0 port

iOS 7 or later
iPhone or iPad
Dock- or Lightning-to-USB adapter
Inputs 1 x RCA coaxial (compatible with S/PDIF or AES/EBU)
1 x TOSLINK optical (compatible with S/PDIF or ADAT)
Outputs 2 x XLR 3-pin (balanced)
2 x RCA (unbalanced)
1 x 1/4" TRS headphone (unbalanced)
1 x 1/8" TRS headphone (unbalanced)
USB 1 x USB 2.0 Type-B
Sample Rates Internal Clock: 44.1 to 768 kHz
External Clock: 28 to 200 kHz
Jitter PLL Mode: <1 ns (all inputs)
Internal Clock: <800 ps (Random Spread Spectrum)
Suppression for External Clocks: >50 dB at 2.4 kHz
Frequency Response 0 Hz to 20.2 kHz (-0.1 dB) at 44.1 kHz
0 Hz to 44.9 kHz (-0.5 dB) at 96 kHz
0 Hz to 88 kHz (-1 dB) at 192 kHz
0 Hz to 115 kHz (-1 dB) at 384 kHz
0 Hz to 109 kHz (-3 dB) at 768 kHz
Input Sensitivity <0.3 V p-p
Output Level XLR: +19 dBu, +13 dBu, +7 dBu, or +1 dBu at 0 dBFS
RCA: +13 dBu, +7 dBu, +1 dBu, or -5 dBu at 0 dBFS
1/4" (High Power): +22 dBu / 10 V at 0 dBFS with 100-Ohm minimum load
1/4" (Low Power): +7 dBu / 1.73 V at 0 dBFS with 8-Ohm minimum load
1/8": -3 dBu / 0.55 V at 0 dBFS
Maximum Power Output 1/4": 1.5 W per channel at 0.001% THD
1/8": 40 mW per channel at 0.001% THD and 8-Ohm load
Signal to Noise Ratio XLR at +7 dBu or Higher: 117 dB RMS unweighted, 120 dBA
XLR at +1 dBu: 115.4 dB RMS unweighted, 118.9 dBA
RCA at +13 dBu: 117 dB RMS unweighted, 120 dBA
RCA at +7 dBu: 116 dB RMS unweighted, 119 dBA
RCA at +1 dBu: 114 dB RMS unweighted, 117 dBA
RCA at -5 dBu: 109 dB RMS unweighted, 113 dBA
1/4" at +22 dBu: 117 dB RMS unweighted, 120 dBA
1/4" at +7 dBu: 116 dB RMS unweighted, 119 dBA
1/8" at -3 dBu: 115 dB RMS unweighted, 118 dBA
THD XLR at -1 dBFS: -112 dB, 0.00025%
XLR at -3 dBFS: -116 dB, 0.00016%
1/4" at +18 dBu, 32 Ohms, 1.2 W: -110 dB, 0.0003%
1/4" at +14 dBu, 16 Ohms, 0.94 W: -110 dB, 0.0003%
THD + Noise XLR at -1 dBFS: -110 dB, 0.00032%
1/4" at +18 dBu, 32 Ohms: -107 dB, 0.00045%
Output Impedance XLR: 200 Ohms balanced, 100 Ohms unbalanced
1/4": 0.1 Ohms
Channel Separation >120 dB
Temperature Range 41 to 122°F / 5 to 50°C
Relative Humidity (non-condensing) <75%
Idle Current 570 mA / 6.8 W at 12 V
Power Consumption Standby: 120 W / 10 mA
Idle: 7 W
Maximum: 18 W
Power Requirement External switching power supply, 100 to 240 VAC, 2 A, 24 W
Dimensions (W x H x D) 8.5 x 2.0 x 5.9" / 215 x 52 x 150 mm
Weight 2.2 lb / 1 kg

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