RME ADI-2 DAC FS High-Resolution USB DAC

Product #71555 | SKU ADI2 DAC FS | RME
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  • Studio-Quality 2-Channel USB DAC.
  • High-End Headphone Amplifier.
  • S/PDIF & ADAT Playback.
  • DSD up to 768 kHz / DSD256.
  • High-End Amplifier for iOS Devices.


The RME ADI-2 DAC FS High-Resolution USB DAC is a two-channel digital-to-analogue convertor for the discerning audiophile or engineer. It offers 32-bit conversion up to 768 kHz, making it compatible with high-resolution PCM formats and even DSD256. Additionally, the ADI-2 is compatible with iOS devices with apposite adapters, so you can enjoy audio streamed off your tablet or iPhone in a high-quality manner.

For connections, the ADI-2 DAC FS offers stereo RCA outputs, stereo XLR connections, a 1/4" headphone output, and a low-noise IEM output. You can feed digital signal to the unit over USB, S/PDIF coaxial, S/PDIF Optical, or ADAT.

The built-in headphone amplifier provides low THD values even with 32- or 16-Ohm headphones, ensuring a transparent and crystal-clear sound. Onboard DSP allows you to dial in crossfeed, or instantiate a precise AEQ for your exact predilections. This DSP also offers other features, such as a loudness contour reminiscent of old HiFi systems, and M/S encoding or decoding.

A high-resolution graphical operation surface makes operating the unit a breeze, as do the three push-button encoders and four dedicated-menu buttons. Included with the ADI-2 DAC FS are a remote control, an external power supply, a power cord, and a USB cable.

Key Features:

32-Bit / 768 kHz Convertor

The ADI-2 DAC is a 2-channel digital to analogue convertor in a half-rack enclosure. 32-bit / 768 kHz convertors offer a signal to noise ratio up to 120 dBA.

Powerful DSP

Powerful, built-in DSP adds useful audio processing, including a 5-band parametric AEQ, fast Bass/Treble adjustment, Crossfeed, Loudness control, and more.

Easy to Operate

Operation is quick and easy through three encoders, with push-button functionality, as well as four buttons to access dedicated menus. The unit remembers all current settings, even the menu position.

Digital Inputs

Class Compliant UAC 2 enables up to 768 kHz sample rate on an iPad. The same is available on computers for high resolution of PCM, DXD, and DSD at up to 768 kHz / DSD256. SPDIF coaxial and optical can be used alternately. SPDIF optical also supports two channels of ADAT operation, at up to 192 kHz.

A Panoply of Outputs

The balanced and unbalanced outputs are fitted with both XLR and RCA jacks. The unit uses a fully-balanced and DC-coupled circuit design. The Extreme Power headphone output provides reference-grade sound and headroom. RME's IEM output offers low-noise operation for today's super-sensitive in-ear monitors.

Level Settings

To maintain the full dynamic range within the best operating level, discrete 4-stage reference-level settings were utilised (-5, +1, +7, +13 dBu). The digital volume control of the ADI-2 DAC operates distortion free over a range of 190 dB, staying out of the sound's way.

Steady Clocking

RME's SteadyClock FS performs in all clock modes. Thanks to highly-efficient jitter suppression, the DA-conversion always operates on a high sonic level, being completely independent from the quality of the incoming clock signal.


Digital Inputs
Lock Range 44 kHz to 200 kHz
Jitter Suppression: >50 dB (2.4 kHz)
SPDIF Coaxial 1 x RCA, AES/EBU Compatible
High-Sensitivity Input Stage (<0.3 V p-p)
SPDIF Optical 1 x Optical, ADAT Compatible
Analogue Outputs
Output Level XLR, Switchable : +19, +13, +7, +1 dBu at 0 dBFS
Unbalanced RCA: -5 dBu to +13 dBu at 0 dBFS
1/4" TRS: +7 dBu (1.73 V, 8 Ohms or Greater), +22 dBu (10 V, 100 Ohms or Greater)
IEM: -3 dBu (0.55 V) at 0 dBFS
Signal to Noise Ratio XLR at +7 to +19 dBu: 117 dB RMS Unweighted, 120 dBA
XLR at +1 dBu: 115,4 dB RMS Unweighted, 118.9 dBA
Unbalanced RCA at +13 dBu: 117 dB RMS Unweighted, 120 dBA
Unbalanced RCA at +1/+7 dBu: 114/116 dB RMS Unweighted, 117/119 dBA
Unbalanced RCA at -5 dBu: 109 dB RMS Unweighted, 113 dBA
1/4" TRS at +22 dBu: 117 dB RMS Unweighted, 120 dBA
1/4" TRS at +7 dBu: 116 dB RMS Unweighted, 119 dBA
IEM at -3 dBu: 115 dB RMS Unweighted, 118 dBA
Frequency Response At 44.1 kHz, -0.1 dB: 0 Hz to 20.2 kHz
At 96 kHz, -0.5 dB: 0 Hz to 44.9 kHz
At 192 kHz, -1 dB: 0 Hz to 88 kHz
At 384 kHz, -1 dB: 0 Hz to 115 kHz
At 768 kHz, -3 dB: 0 Hz to 109 kHz
THD XLR & RCA, At -1 dBFS: -112 dB, 0.00025%
XLR & RCA, At -4 dBFS: -116 dB, 0.00016%
1/4" TRS, At +18 dBu, 32-Ohm Load, 1.2 W: -110 dB, 0.0003%
1/4" TRS, At +14 dBu, 16-Ohm Load, 0.94 W: -110 dB, 0.0003%
THD+N XLR and RCA at -1 dBFS: -110 dB, 0.00032%
1/4" TRS at +18 dBu, 32-Ohm Load: -107 dB, 0.00045%
Channel Separation >120 dB
Output Impedance XLR: 200 Ohms Balanced, 100 Ohms Unbalanced
1/4" TRS: 0.1 Ohm Unbalanced
Max Power 1/4" TRS, 0.001% THD: 1.5 W per channel
IEM, 8 Ohms, 0.001% THD: 40 mW per Channel
Clock Internal, S/PDIF In
Supported Sample Rate (Internal): 44.1 up to 768 kHz
Supported Sample Rate (External): 44.1 up to 200 kHz
Clock Jitter Suppression of External Clocks: >50 dB (2.4 kHz)
Effective Clock Jitter Influence on D-A Conversion: Near Zero
System Requirement (Minimum)
Computers Windows 7 or Later
Intel Mac OS X 10.6 or Later
1 x USB 2.0 or USB 3 Port
Computer with at least Intel Core i3 CPU
iOS iOS 7 or Later
Dock or Lightning to USB Adapter
Power Supply External Switching PSU, 100 to 240 V AC, 2 A, 24 W, Included
Power Consumption Standby: 120 mW (10 mA)
Idle: 7 W (18 W, Max)
Idle Current 12 V: 570 mA (6.8 W)
Temperature Range 41 to 122°F / 5 to 50°C
Relative Humidity <75%, non-condensing
Dimensions (WxHxD) 8.5 x 2.0 x 5.9" / 21.5 x 5.2 x 15.0 cm
Weight 2.2 lb / 1.0 kg

In The Box

  • RME ADI-2 DAC FS High-Resolution USB DAC.
  • Remote Control with Battery.
  • External Power Supply.
  • Power Cord.
  • USB Cable.


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  • Product: RME ADI-2 DAC FS High-Resolution USB DAC
  • Manufacturer: RME
  • Model: ADI2 DAC FS
  • RM Product #: 71555
  • Warranty: 2 year manufacturer warranty

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