Creative has made a DAC/headphone amp that’s quite good for the price, but you should ignore its Windows/Mac software-driven special features unless you have a lot of patience and persistence.
The Sound Blaster X7 delivers an incredibly strong price/performance ratio. If it had HDMI in and out (and the ability to decode Dolby TrueHD and DTS-HD Master Audio) it would be darn near perfect.
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