RME ADI-2 Pro FS Reference AD/DA Converter with Extreme Power Headphone Amplifiers

RME ADI-2 Pro FS Reference AD/DA Converter with Extreme Power Headphone Amplifiers

RME ADI-2 Pro FS Reference AD/DA Converter with Extreme Power Headphone Amplifiers

B&H # RMADI2PROFS MFR # ADI-2 PRO FS
RME ADI-2 Pro FS Reference AD/DA Converter with Extreme Power Headphone Amplifiers

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Product Highlights

  • High-Fidelity 32-Bit / 768 kHz Audio
  • 2-Channel A/D, 4-Channel D/A Converter
  • SteadyClock with Femtosecond Technology
  • Supports AES/EBU, ADAT, S/PDIF
  • 2 x Extreme Power Headphone Outputs
  • PCM/DSD Record/Playback
  • Built-In Digital Signal Processing
  • USB 2.0 Class Compliant
  • High-Resolution Display, AutoDark mode
  • Mac OS X, iOS, Windows, Standalone
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RME ADI-2 PRO FS overview

  • 1Description

The RME ADI-2 Pro FS is a versatile reference-class AD/DA converter that can be used as a USB audio interface, a USB DAC with Extreme Power headphone amplifiers, or as a format converter with digital monitoring. Housed in a compact, half-rack enclosure, it delivers pristine 32-bit / 768 kHz audio quality to audio engineers and audiophiles alike, for studio, home, and mobile applications, ranging from analog/digital recording, PCM/DSD recording and playback, precise audio measurements, or use as a high-fidelity front-end and headphone amp for iPhone/iPad or other mobile devices.

The ADI-2 Pro FS is equipped with six input sources and eight output paths, for simultaneous 2-channel analog-to-digital input conversion and 4-channel digital-to-analog output conversion. The I/O options include two servo-balanced analog line inputs, two separate balanced and unbalanced analog outputs, one optical S/PDIF I/O which also supports two channels of ADAT operation, and, via the included digital breakout cable, one coaxial S/PDIF I/O and one AES/EBU I/O.

The unit supports all sample rates between 32 kHz and 768 kHz and delivers a flat frequency response with an impressive 124 dBA signal-to-noise ratio. The company's SteadyClock with femtosecond clock technology efficiently suppresses jitter in all clock modes, ensuring that the AD/DA conversion's sonic quality remains consistent, independently from the quality of the incoming clock signal.

The two Extreme Power headphone outputs provide high-end monitoring options optimized for low- and high-impedance headphones. They feature an Advanced Balanced mode which delivers a balanced signal path from the DAC straight to the phone with optimized frequency response and a maximum output level of +28 dBu. A powerful DSP adds all kinds of useful audio processing, including 5-band parametric EQ, fast bass/treble adjustment, crossfeed, and a sophisticated loudness function.

The ADI-2 Pro FS features a high-resolution ISP LCD panel, which eases operation and displays signal metering of all I/Os, current digital states of S/PDIF, AES, USB, a 30-band analyzer, and more. The display features an AutoDark mode that automatically turns off all LEDs and the display after ten seconds of user inactivity. The unit can be used as a standalone and operated with three push-button encoders and four buttons to access dedicated menus.

Key Features
  • High-fidelity reference-class 32-bit / 768 kHz AD/DA converter 
  • High-resolution PCM/DSD recording and playback
  • Two Extreme Power headphone amplifiers for audiophile-quality monitoring
  • USB 2.0 port, fully class-compliant (UAC 2)
  • Multi-format converter (AES, S/PDIF, ADAT) with monitoring function solves any clocking problems between formats
  • Low Latency—AD/AD converters with low-latency filters offer super-fast conversion
  • Versatile iPhone/iPad DAC
  • High-end AD/DA frontend for audio measurements
  • High-resolution display for graphic operation—with Peak Level meters, 30-band analyzer, State Overview screen for listing current states of SPDIF, AES, USB and clock
  • AutoDark mode automatically turns off all LEDs and the display after ten seconds of user inactivity
  • Standalone mode
  • Compact and lightweight design allows for mobile use
  • External, switched power supply with lockable connector included—unit can easily be powered from a battery (available separately)
  • DIGICheck utility software included –  with Stereo and Multichannel level meters, Analyzer, Bit Statistics & Noise, ITU1770 meter, Goniometer, Surround level meter, Totalyzer
  • Compatible with Windows, Mac OS X, iOS, and any device that supports class-compliant USB audio 
  • Uses RME's MADIface series driver with Windows, for full WDM and ASIO compatibility, and highest performance
High-Resolution Audio
  • 2-channels A/D converter, 4-channels D/A converter
  • 32-bit / 768 kHz digital audio
  • Supports all sample rates between 32 kHz and 768 kHz
  • 124 dBA signal-to-noise ratio
  • SteadyClock with femtosecond clock technology ensures perfect jitter reduction and stable clocking with internal or external clock signal
  • Digital signal processing with 5-band parametric EQ, fast bass/treble adjustment, binaural crossfeed, spectral analysis, and loudness sound control
Extreme Power Headphone Amplifiers
  • Two independent Extreme Power driver circuits with two stereo D/A converters – optimized for both high- and low-impedance headphones
  • 120 dBA SNR—no audible hum, noise, or distortion, fully transparent, crystal-clear sound at any volume setting
  • 5-band Parametric EQ—lets you adjust the headphone sound to match your hearing curve, or compensate for differences between left/right ear
  • Bass/Treble – to adjust sound to your personal taste
  • Loudness—lets you choose how much maximum gain for bass and treble should occur at lower volume settings
  • Advanced Balanced mode delivers balanced signal path from the DAC straight to the phone, with optimized frequency response, super-low output impedance (0.2 Ohms), and a maximum output level of +28 dBu
Connectivity
  • Two servo-balanced analog inputs on combo XLR / TRS jacks
  • Two separate, balanced and unbalanced analog outputs on XLR and TS jacks
  • Two stereo Extreme Power headphone outputs on the front
  • One optical S/PDIF I/O, also supports 2 channels of ADAT operation
  • One coaxial S/PDIF I/O (RCA) and one AES/EBU I/O (XLR) via included digital breakout cable (9-pin D-sub to 2 x XLR and 2 x RCA)
Modes
  • The unit will turn into different operating modes depending on the connected cables
  • Preamp Mode / analog in to analog out—this mode is active when no digital input signal and no USB is detected
  • AD/DA Converter Mode (analog in to all digital outs, digital in to all analog outs)—this mode becomes active as soon as a digital signal is sensed by the unit
  • USB or Interface Mode (USB is detected and all inputs are routed to USB, all outputs are fed from USB)—provides 6 channels (Analog 1/2, AES, S/PDIF) of recording, 8 channels (Analog 1/2/3/4, AES, S/PDIF) of playback, and works as iPad front-end at up to 192 kHz sample rate
In the Box
RME ADI-2 Pro FS Reference AD/DA Converter with Extreme Power Headphone Amplifiers
  • External Power Supply
  • Power Cord
  • Digital Breakout Cable AES / S/PDIF (BO968)
  • Limited 2-Year Warranty
  • Table of Contents
    • 1Description

    RME ADI-2 PRO FS specs

    Analog Inputs
    XLR Audio Inputs Input: XLR, servo-balanced


    Input Impedance: 18 kOhms (balanced), 9 kOhms (unbalanced)


    Input Sensitivity: +24 dBu, +19 dBu, +13 dBu, +4 dBu at 0 dBFS (switchable)


    Digital Trim Gain Range: 0 to +6 dB


    Signal to Noise Ratio (SNR) at +13 / 19 / 24 dBu: 120.x dB RMS unweighted, 124.x dBA 


    Signal to Noise Ratio (SNR) at +4 dBu: 119 dB RMS unweighted, 123 dBA 


    Frequency Response at 44.1 kHz, -0.1 dB: 5 Hz to 20.5 kHz


    Frequency Response at 96 kHz, -0.5 dB: 3 Hz to 45.5 kHz


    Frequency Response at 192 kHz, -1 dB: 2 Hz to 92.7 kHz


    Frequency Response at 384 kHz, -1 dB: <1 Hz to 124 kHz


    Frequency Response at 768 kHz, -3 dB: <1 Hz to 180 kHz


    THD at -1 dBFS: -113 dB, 0.00029 %


    THD+N at -1 dBFS: -112 dB, 0.00025 %


    Channel Separation: >110 dB

    TRS Audio Input Same as XLR inputs but:


    Input: 1/4" / 6.3 mm TRS jack, servo-balanced

    Analog Outputs
    XLR Audio Outputs Output Level: +24 dBu, +19 dBu, +13 dBu, +4 dBu at 0 dBFS (switchable)


    Signal to Noise Ratio (SNR) at +13 / 19 / 24 dBu: 117 dB RMS unweighted, 120 dBA


    Signal to Noise Ratio (SNR) at +4 dBu: 115 dB RMS unweighted, 118 dBA


    Frequency Response at 44.1 kHz, -0.1 dB: 0 Hz to 20.2 kHz


    Frequency Response at 96 kHz, -0.5 dB: 0 Hz to 44.9 kHz


    Frequency Response at 192 kHz, -1 dB: 0 Hz to 88 kHz


    Frequency Response at 384 kHz, -1 dB: 0 Hz to 115 kHz


    Frequency Response at 768 kHz, -1 dB: 0 Hz to 109 kHz


    THD at -1 dBFS: -110 dB, 0.00025 %


    THD+N at -1 dBFS: -110 dB, 0.00032 %


    THD at -3 dBFS: -116 dB, 0.00016 %


    Channel Separation: >110 dB


    Output Impedance: 200 Ohms (balanced), 100 Ohms (unbalanced)

    1/2 TS Audio Outputs (Rear) Same as XLR output, but with the following differences:

    Output: 1/4" / 6.3 mm TS jack, unbalanced

    Maximum Output Level: +19 dBu

    Signal to Noise Ratio (SNR) at +19 dBu: 117 dB RMS unweighted, 120 dBA

    Signal to Noise Ratio (SNR) at +13 dBu: 116 dB RMS unweighted, 119 dBA

    Signal to Noise Ratio (SNR) at +4 dBu: 113 dB RMS unweighted, 117 dBA

    Output Impedance: 100 Ohms

    Phones 1/2 Same as 1/2 TS output, but with the following differences:


    Output: 1/4" / 6.3 mm TRS jack, unbalanced, stereo


    Output Impedance: 0.1 Ohm


    Signal to Noise Ratio (SNR) at +22 dBu: 117 dB RMS unweighted, 120 dBA


    Signal to Noise Ratio (SNR) at +7 dBu: 114 dB RMS unweighted, 118 dBA


    Output Level at 0 dBFS, Ref Level +19 dBu, Load 100 Ohms or Up: +22 dBu (10 V)


    Output Level at 0 dBFS, Ref Level +4 dBu, Load 8 Ohms or Up: +7 dBu (1.73 V)


    THD at +18 dBu, 32 Ohms Load, 1.2 W: -110 dB, 0.0003 %


    THD+N at + 18 dBu, 32 Ohms Load: -107 dB, 0.00045 %


    THD at +14 dBu, 16 Ohms load, 0.94 W: -110 dB, 0.0003 %


    Maximum Power at 0.001% THD: 1.5 W per channel

    Phones 3/4 Same as Phones 1/2 output, but with the following differences:

    Output Levels at 0 dBFS: +7 dBu (Hi-Power off), +22 dBu (Hi-Power on)
    Balanced Phones Mode Same as Phones output, but with the following differences:


    Output levels at 0 dBFS:  +13 dBu, 9.8 V (Hi-Power off), +28 dBu, 19.5 V (Hi-Power on)


    Output Impedance: 0.2 Ohm


    Signal to Noise Ratio (SNR) at +28 dBu: 120 dB RMS unweighted, 123 dBA


    Signal to Noise Ratio (SNR) at +13 dBu: 118 dB RMS unweighted, 121 dBA


    Output Level at 0 dBFS, Hi-Power On, Load 150 Ohms or Up: +28 dBu, 19.5 V


    Output Level at 0 dBFS, Hi-Power Off, Load 8 Ohms or Up: +13 dBu, 9.8 V


    Maximum Power at 0.001% THD: 2.9 W per channel

    Digital Inputs
    General Lock Range: 28 to 200 kHz


    Jitter Suppression: >50 dB (2.4 kHz)


    Accepts consumer and professional format

    AES/EBU 1 x XLR, transformer-balanced, galvanically isolated, according to AES3-1992

    Input Sensitivity: 1.0 V-pp
    S/PDIF Coaxial 1 x RCA, transformer-balanced, according to IEC 60958

    High-sensitivity input stage (<0.3 V p-p)

    AES/EBU compatible (AES3-1992)
    S/PDIF Optical 1 x optical, according to IEC 60958

    ADAT-compatible
    Digital Outputs
    AES/EBU 1 x XLR, transformer-balanced, galvanically isolated, according to AES3-1992

    Output Level: 2.7 V p-p

    Format Professional according to AES3-1992 Amendment 4

    Single Wire mode, sample rate 28 to 200 kHz
    S/PDIF Coaxial 1 x RCA, according to IEC 60958

    Output Level: 0.75 V p-p

    Format Consumer S/PDIF according to IEC 60958

    Single Wire mode, sample rate 28 to 200 kHz
    S/PDIF Optical 1 x optical, according to IEC 60958

    Format Consumer (S/PDIF) according to IEC 60958

    Sample Rate: 28 to 200 kHz
    Digital
    Clocking Clocks: Internal, AES in, S/PDIF in, ADAT in


    Jitter Suppression of External Clocks: >50 dB (2.4 kHz)


    Effective Clock Jitter Influence on AD/DA Conversion: Near zero


    PLL ensures zero dropout, even at more than 100 ns jitter


    Additional Digital Bitclock PLL for trouble-free varispeed ADAT operation


    Supported Sample Rates for External Clocks: 28 to 200 kHz


    Internally Supported Sample Rates: 44.1 to 768 kHz

    General
    System Requirements Compatible with any device that supports class-compliant USB audio, including Android


    Mac: OS X 10.6 or later (Intel)


    Windows: 7 or later

    1 x USB 2.0 or USB 3.0 port


    Miniumum CPU: Intel Core i3 CPU or faster


    iOS:


    iPad: iOS 5 or later


    iPhone: iOS 7 or later


    Apple iPad Camera Connection Kit or Lightning to USB adapter

    Power Included Power Supply: External switching PSU, 100-240 VAC, 12 VDC, 2 A, 24 W

    Standby Power Consumption: 50 mW

    Idle Power Consumption: 10 W

    Maximum Power Consumption: 22 W

    Idle Current at 12 V: 850 mA (10 W)
    Environment Temperature Range: 41 to 122° F / 5 to 50° C

    Relative Humidity: <75%, non-condensing
    Dimensions (W x H x D) 8.5 x 1.73 x 5.1" / 215 x 44 x 130 mm
    Weight 2.2 lb / 1.0 kg
    Packaging Info
    Package Weight 4.65 lb
    Box Dimensions (LxWxH) 13.6 x 8.6 x 3.3"

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