of controllers. Dolby Digital bitstream out This setting controls the DD sound encoder. DTS (Digital Theater Systems) bitstream out This setting is the same as Dolby Digital Bitstream Out, only with DTS sound instead. Operating system support Although Creative was slow to embrace 64-bit drivers for the X-Fi lineup, most x86-64 architecture based operating systems are now supported. Microsoft Windows 7 includes basic driver support for many of the X-Fi series cards. Many of the X-Fi features however require the software applications provided by Creative in order to utilize the full capabilities of the hardware. Linux support On September 24, 2007 Creative Labs released a closed source unsupported beta driver providing Linux 64-bit OS support for the following Sound Blaster X-Fi series sound cards: Creative Sound Blaster X-Fi Elite Pro Creative Sound Blaster X-Fi Platinum Creative Sound Blaster X-Fi Fatal1ty Creative Sound Blaster X-Fi XtremeGamer Creative Sound Blaster X-Fi XtremeMusic An open-source driver is available with OSS v4 build 1013 and above. Datasheets were provided by Creative to enable ALSA driver development. On November 6, 2008 Creative finally released their driver under a GPL license. It supports x86 as well as x86-64 architectures and is listed in their support area. On May 15, 2009 after some communications with Creative, SUSE developer Takashi Iwai finally got a mergeable version of their X-Fi driver. On August 31, 2009 the driver (snd-ctxfi) was included in release of ALSA 1.0.21. Support for Creative Sound Blaster X-Fi Titanium HD was added on January 25, 2012 in ALSA v1.0.25 release. This driver does not support I/O Front panel and its IR, because that documentation part was missing. Xtreme Audio that has a different chipset stayed unsupported for longer time. It is currently supported by advanced Linux ALSA driver modules but might require installation of additional packages from alternative repositories. X-Fi MB as a pure software solution has Windows as a system requirement and thus does not provide Linux support. X-Fi line-up Products in the X-Fi Family SNR is 109 dB for Multi channel analog outputs and 115 dB for Stereo analog outputs. All PCI Fatal1ty cards have "Fatal1ty" sign with two red LEDs. PCIe Fatal1ty cards have no illuminated Fatal1ty logo and only features the X-Fi logo illuminated by two white LEDs (however it does have the Fatal1ty branding on the heatsink of the card). Elite Pro card has "X-Fi" sign with two blue LEDs. The