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RME Audio ADI-2 DAC, User Manual

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RME Audio ADI-2 DAC User Manual Download Page 67

 

 

User’s Guide ADI-2 DAC

 © RME

67

 

34. Appendix

 

 
RME news, driver updates and further product information are available on RME’s website: 
 
http://www.rme-audio.com 
 
Worldwide distribution: Audio AG, Am Pfanderling 60, D-85778 Haimhausen, Tel.: (49) 08133 / 
918170 
 
 

Acknowledgements 

The Bauer Binaural Crossfeed effect in the ADI-2 DAC was inspired by Boris Mikhaylov’s bs2b 
implementation. 
 
 

Trademarks

 

All  trademarks,  registered  or  otherwise,  are  the  property  of  their  respective  owners.  RME, 
DIGICheck  and  Hammerfall  are  registered  trademarks  of  RME  Intelligent  Audio  Solutions. 
SyncCheck, ZLM, DIGI96, SyncAlign, TMS, TotalMix, SteadyClock, ADI-2 DAC and Babyface 
Pro are trademarks of RME Intelligent Audio Solutions. Alesis and ADAT are registered trade-
marks of Alesis Corp. ADAT optical is a trademark of Alesis Corp. Microsoft, Windows 7/8/10 
are registered trademarks or trademarks of Microsoft Corp. Apple, iPad, iPhone and Mac OS 
are registered trademarks of Apple Inc. ASIO is a trademark of Steinberg Media Technologies 
GmbH. 
 
Copyright 

”

 Matthias Carstens, 03/2018. Version 1.2 

Current driver version Windows: 0.9650 
Firmware: FPGA 11, DSP 20, 03/2018 
 
 
Although the contents of this User’s Guide have been thoroughly checked for errors, RME can 
not guarantee that it is correct throughout. RME does not accept responsibility for any mislead-
ing  or  incorrect  information  within  this  guide.  Lending  or  copying  any  part  of  the  guide  or  the 
RME Driver CD, or any commercial exploitation of these media without express written permis-
sion  from  RME  Intelligent  Audio  Solutions  is  prohibited.  RME  reserves  the  right  to  change 
specifications at any time without notice. 

Summary of Contents for ADI-2 DAC

Page 1: ...Converter SPDIF AES ADAT Interface 32 Bit 768 kHz Digital Audio USB 2 0 Class Compliant Extreme Power Headphone Output Super Low Noise IEM Output Digital Signal Processing Advanced Feature Set Remote...

Page 2: ...ic EQ 13 8 4 Bass Treble 14 8 5 Loudness 14 8 6 Crossfeed 15 8 7 DSP Limitations 16 Operation Controls and Display 9 Operation and Usage 18 10 Front Panel Controls 10 1 Keys 18 10 2 Encoders 18 10 3 R...

Page 3: ...2 DAC 21 1 Settings Dialog 39 21 2 Clock Modes Synchronization 40 22 Operation and Usage 22 1 Playback 40 22 2 Multi client Operation 40 22 3 Multi interface Operation 41 22 4 ASIO 41 23 DIGICheck Win...

Page 4: ...rves 44 1 kHz 54 31 5 Frequency Response 54 31 6 DA Impulse Responses 55 31 7 Total Harmonic Distortion Measurements 56 31 8 Loudness 56 31 9 Extreme Power Charts 57 31 10 Phones Distortion Comparison...

Page 5: ...hat is unheard of useful features that for unknown reasons no one else implemented and two extremely powerful headphone outputs that will be your new refer ence in accuracy and dynamic range Here it i...

Page 6: ...an iPad The same is available on computers for high resolution of PCM DXD and DSD at up to 768 kHz DSD256 The balanced and unbalanced outputs are fitted with both XLR and RCA jacks The unit uses a ful...

Page 7: ...e ADAT stream can be accessed SMUX and SMUX4 up to 192 kHz are still supported USB 2 0 Standard USB socket for connection to the computer The ADI 2 DAC operates as Class Compliant device in 2 channel...

Page 8: ...and Switching between the bands can also be done by turning encoder 2 When in the EQ parameter line all values are no longer grayed out In this state the big encoder steers Gain encoder 1 Frequency an...

Page 9: ...User s Guide ADI 2 DAC RME 9 5 4 Overview Menu Structure...

Page 10: ...al activate the full duplex operation with USB The respective SPDIF signal is clock source and can be recorded via USB The analog output signal is now the current USB playback no longer the SPDIF inpu...

Page 11: ...then simply press the Update button A progress bar will indicate when the flash process is finished Verify Ok After the update the ADI 2 DAC needs to be reset Push the standby button to switch it off...

Page 12: ...istortion fully transparent and crystal clear sound at any volume setting for any personal taste in any application And there is more The headphone sockets of the ADI 2 DAC have sensor contacts The un...

Page 13: ...ell as to better meet personal taste with a variety of head phones RME found 5 bands of parametric EQ to be the best balance between occupied DSP resources and efficient sound treatment While it is tr...

Page 14: ...uals at the customer s home Room size room dampening and efficiency of the used speakers are all unknown But the effect of loss in perceived sound exists read about the Fletcher Munson curves and can...

Page 15: ...ers but which sounds unnatural on a headphone The Bauer Binaural method is used with five selectable strengths of narrowing the upper fre quencies This advanced method which also includes a small dela...

Page 16: ...ates 705 6 kHz and up Crossfeed or EQ can be active not both at the same time Bass Treble and Loudness are not available The high sample rates available in the ADI 2 DAC also exceed the capabilites of...

Page 17: ...User s Guide ADI 2 DAC RME 17 User s Guide ADI 2 DAC Operation Controls and Display...

Page 18: ...ny other key two times The display will revert to the top screen that was active before entering the menu 10 2 Encoders The encoders can be turned endlessly but also pressed adding a push button funct...

Page 19: ...everts to the level meter screen that has been active before Line Out defaults to Auto Ref Level enabled The current volume setting is then shown as dBr dB relative and the unit automatically switches...

Page 20: ...d right channel to the left output only Width Defines the stereo width 1 00 equals full stereo 0 00 mono 1 00 swapped channels M S Proc Activates M S processing Monaural content is sent to the left st...

Page 21: ...L or R to C and vice versa Mute Mutes the output Can also be controlled via the VOL screen and Remap Function Keys 12 2 Subpage Parametric EQ EQ Enable ON OFF Default OFF Band 1 Type Available settin...

Page 22: ...the shelf treble filter Adjustable from 3 kHz to 10 kHz in steps of 100 Hz Default 6 5 kHz Treble Q The quality factor of the filter is adjustable from 0 5 to 1 5 Default 0 7 12 4 Subpage Loudness Ena...

Page 23: ...red band 2 yellow band 3 green band 4 light blue band 5 dark blue To change to the next band push VOLUME Another push on encoder 2 selects the filter symbol in the right of the parameter line As this...

Page 24: ...cheme lets the user easily change and compare three different EQ settings the manual one the 20 stored presets and the modified preset without loosing changes while listening to a different set of EQ...

Page 25: ...Default Remote Allows to assign 21 different functions actions to the four function keys on the unit and on the remote or the remote only Configuration is done via the following four entries VOL 1 I...

Page 26: ...rate is shown 14 1 3 Device Mode The subpage Device Mode has the following entries Mute Line OFF vs Phones Toggle Ph Line Default vs Phones Activates mutual mute between Phones IEM out and rear Line O...

Page 27: ...PDIF and USB and a dark Volume screen with additional information Pushing the small encoder 1 or 2 cycles through them if any is currently active To quickly call them up simply press any of the four f...

Page 28: ...0 5 dB steps accuracy per band on the ADI 2 DAC DSP even at 768 kHz sample rate The most important application using a Spectral Analyzer is the visualization of frequencies and levels found in music o...

Page 29: ...ut a signal shown as 24 bit might contain only 16 bit real audio plus 8 bits of noise But SPDIF can also transport AC 3 and DTS encoded surround sound This signal sounds like chopped noise at full vol...

Page 30: ...could happen Therefore the phones outputs will switch off with 1 8V DC detected Power Fail In case the operating voltage drops below 9 3V the internal power supply of the analog I Os is switched off...

Page 31: ...xample EQ Enable ON The DoP recognition also works on USB A DSD playback via USB State Overview shows DSD will be done at 176 4 192 kHz for DSD64 352 8 384 kHz for DSD128 and 705 6 768 kHz for DSD256...

Page 32: ...sample rate This is caused by the 1 bit format which unlike PCM requires absolute silence and DC freedom at the beginning and end of a title so that the transition as required by the 1 bit stream does...

Page 33: ...User s Guide ADI 2 DAC RME 33 User s Guide ADI 2 DAC Inputs and Outputs...

Page 34: ...ters for details All outputs feature mute components to suppress power on off noise even when power fails instead of switching the unit off via the standby button SNR and THD values as well as frequen...

Page 35: ...t is now 117 dB minus 20 dB 97 dB RMS unweighted While it is unlikely that any noise will be audible changing the Ref Level to 1 dBu would need only a Volume setting of 2 dB to achieve the same level...

Page 36: ...ons Device Mode Mute Line is set to OFF all three outputs will work simultaneously The Line out specifies all settings Its EQ Bass Treble Loudness etc can be heard on Phones and IEM output Since the d...

Page 37: ...User s Guide ADI 2 DAC RME 37 User s Guide ADI 2 DAC Installation and Operation Windows...

Page 38: ...Simply install the new driver over the existing one Possible reasons why an ADI 2 DAC is not found automatically x The ADI 2 DAC is not switched on x The USB port is not active in the system check the...

Page 39: ...umber shown will no longer be 0 An audio reset is performed automatically The counter is reset on start of playback record Sample Rate Sets the currently used sample rate Offers a central and comforta...

Page 40: ...ing used ADI 2 DAC must be selected as output device It can often be found in the Options Preferences or Settings menus as Playback Device Audio Devices etc Increasing the number and or size of audio...

Page 41: ...tputs The following is a short summary of the currently available functions x Level Meter High precision 24 bit resolution 2 channels Application examples Peak level measurement RMS level measurement...

Page 42: ...42 User s Guide ADI 2 DAC RME...

Page 43: ...User s Guide ADI 2 DAC RME 43 User s Guide ADI 2 DAC Installation and Operation Mac OS X...

Page 44: ...re the stereo or multi channel playback to any available channels Applications that don t support card or channel selection will use the device chosen as Input and Output in the System Preferences Sou...

Page 45: ...evel measurement RMS level measurement over detection phase correlation measurement dynamic range and signal to noise ratios RMS to peak difference loudness long term peak measurement input check Over...

Page 46: ...46 User s Guide ADI 2 DAC RME...

Page 47: ...User s Guide ADI 2 DAC RME 47 User s Guide ADI 2 DAC Installation and Operation iOS...

Page 48: ...ation x Any Apple iPad with at least iOS 5 or an iPhone with at least iOS 7 x Apple iPad Camera Connection Kit or Lightning to USB adapter 28 Setup Connect the USB cable to the Camera Connection Kit L...

Page 49: ...User s Guide ADI 2 DAC RME 49 User s Guide ADI 2 DAC Technical Reference...

Page 50: ...z 109 kHz x THD 1 dBFS 112 dB 0 00025 x THD N 1 dBFS 110 dB 0 00032 x THD 3 dBFS 116 dB 0 00016 x Channel separation 120 dB x Output impedance 200 Ohm balanced 100 Ohm unbalanced Cinch As output XLR b...

Page 51: ...ower consumption 18 Watts x Idle current at 12 V 570 mA 6 8 Watts x Dimensions WxHxD 215 x 52 x 150 mm 8 5 x 2 05 x 5 9 x Weight 1 0 kg 2 2 lbs x Temperature range 5 up to 50 Celsius 41 F up to 122 F...

Page 52: ...rocesses the read out of the embedded data Both sample rates have to be fully identical not only in their frequency but also in their phase relation This state is called Sync and also shown in the Sta...

Page 53: ...nu allows for a manual activation in such a case 31 3 SteadyClock FS RME s SteadyClock technology guarantees an excellent performance in all clock modes Its highly efficient jitter suppression refresh...

Page 54: ...54 User s Guide ADI 2 DAC RME 31 4 Filter Curves 44 1 kHz 31 5 Frequency Response...

Page 55: ...ase linear over the whole frequency range NOS Non Oversampling SuperSlow The DAC includes another filter which is called Super Slow in its data sheet The impulse re sponse looks perfect but checking t...

Page 56: ...56 User s Guide ADI 2 DAC RME 31 7 Total Harmonic Distortion Measurements 31 8 Loudness...

Page 57: ...User s Guide ADI 2 DAC RME 57 31 9 Extreme Power Charts...

Page 58: ...by the device undistorted As the current limiter of the Extreme Power output stages operates in finer resolution its reaction can be evaluated dynamically and be used as simplified impedance detectio...

Page 59: ...pand PCI Bus This branch normally includes two entries of a USB2 Enhanced Host Controller A USB Root Hub can be seen which then connects all USB devices including the ADI 2 DAC By recon necting to a d...

Page 60: ...These efforts guarantee the supreme sound quality of the ADI 2 DAC to be available in all operation and connection scenarios Which level setting is recommended There are a total of four hardware refe...

Page 61: ...olume control has a theoretical advantage in only one point namely the maximum signal to noise ratio at a higher level reduction In reality current circuitry overturns the theory and the SNR at the ou...

Page 62: ...n And at a volume setting of 96 3 dB there are still 93 dB THD measurable These results clearly show that distortion products of the digital volume control are not drowned by the DAC s noise but are n...

Page 63: ...s display shows a message Bit Test 16 bits 24 bits or 32 bits passed depending on the detected signal If the transmission path is not bit transparent or bit accurate the signal only minimally changed...

Page 64: ...64 User s Guide ADI 2 DAC RME 31 16 Block Diagram...

Page 65: ...User s Guide ADI 2 DAC RME 65 User s Guide ADI 2 DAC Miscellaneous...

Page 66: ...that your product is faulty please contact your local retailer Do not open the device by yourself as it may get damaged It has been sealed with tamper evident material and your warranty is void if tho...

Page 67: ...stered trade marks of Alesis Corp ADAT optical is a trademark of Alesis Corp Microsoft Windows 7 8 10 are registered trademarks or trademarks of Microsoft Corp Apple iPad iPhone and Mac OS are registe...

Page 68: ...ment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no...

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