DAC 8 - T+As
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1. TA Technische Mitteilungen Nr 105 Rev 0 23 01 2013 L Wiemann DAC 8 Operation with LINUX PCs 1 2 3 4 OPT AES INVERT FIR BEZIER WIDE S P DIF BNC USB SYS OVS OVS MODE VOLUME Linux is not officially supported by T A as operating system for use with the DAC 8 Nevertheless it is possible to use the DAC 8 as USB D A Converter for Linux PCs The system described below was successfully tested but no responsibiluty is taken for the correctness of the information given USB 1 Mode Most current LINUX distributions will support USB 1 mode Out of the Box with DAC 8 With USB 1 mode reproduction of HD audio files up to 96kHz 24Bit in adaptive mode is possible Please choose USB 1 mode at the DAC 8 see DAC8 user manual for details USB Mode 2 USB Mode 2 with up to 192kHz 32Bit and asynchronous data transmission is also possible under the following conditions Kernel version gt 3 4 x older kernels do not support the TE8802 USB receiver chip used in DAC 8 Select USB 2 mode at the DAC 8 see DAC 8 user manual for details The following system was successfully tested in asynchronous USB 2 mode with DAC 8 e Ubuntu 12 04 LTS with kernel upgrade to Kernel 3 6 2 e ALSA Sound Architecture e Clementine as player programme Hint Other distributions with appropriate new kernel other sound architectures and other player programmes might work as well but were not tested by us Some detai2. A and as output device nw 1 1 as buffer size 4000 ms If the DAC 8 has a different card number in your system see above this setting is to be adjusted accordingly To guarantee a bit perfect and flawless playback the following settings and features should be switched OFF under preferences playback e cross fade manual track change OFF e cross fade automatic track change OFF e Replay Gain OFF Other player programmes like gmusicbrowser DeaDBeef QuodLibet etc were not tested This link will give some further details about player programmes and bit perfect play back under Linux http www head fi org t 56196 1 bit perfect audio from linux post_7596268 Audacity Audacity sound processing programme also works with DAC 8 with the following settings under preferences devices Sound architecture ALSA Device T A USB Audio Device USB Audio 1 hw 1 1 If the DAC 8 has a different card number in your system see above this setting is to be adjusted accordingly Generally player programmes should be started after DAC 8 was properly connected switched ON and selected unser system settings audio as output device Further Information For further Information about Linux support of the TE8802 USB receiver chip please follow the link below http www head fi org t 609062 te8802 asynchronous dacs on linux and squeezebox touch supported with triodes app for the sbt 15
3. ls Ubuntu _ 12 04 with default Kernel 3 2 x does not support DAC 8 For the necessary kernel upgrade to kernel version 3 6 2 see the following link After installing the new kernel please choose the T A Audio Device as output device in System Settings Audio ALSA as Soundarchitektur is tested by us with DAC 8 ans works flawlessly Other sound architectures like OSS OSS4 Phonon etc were not tested The ALSA sound device to choose will normally be device hw 1 1 Card 1 Device 1 You can check that by typing the following terminal command sudo aplay l This will give an output like this List of PLAYBACK Hardware Devices card 0 Intel HDA Intel device 0 ALC889 Analog ALC889 Analog Subdevices 1 1 Subdevice 0 subdevice 0 card 1 Device T A USB Audio Device device 0 USB Audio USB Audio Subdevices 1 1 Subdevice 0 subdevice 0 card 1 Device T A USB Audio Device device 1 USB Audio USB Audio 1 Subdevices 1 1 Subdevice 0 subdevice 0 In the above case select ALSA device hw 1 1 card1 device 1 USB Audio 1 Do not use device hw 1 0 card1 device 0 USB Audio this might produce a distorted or interrupted playback Hint If in your case the T A device has a different card number the ALSA device number must be adjusted accordingly ex hw 0 1 for card 0 or hw 2 7 for card 2 Cementine Please select the following settings under Preferences Playback output Audio sink ALS
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