Dolby audio decoder without Dolby License

Digital Drive

Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it.

Do you think it is OK to use a DA converter that can downmix 5.1ch Dolby digital to 2ch analogue?
I can find only one Dolby licensed Dolby audio decoder. That is Gefen GTV-DD-2-AA Digital Audio Decoder.
Other product do not have Dolby symbol, and the manufacturer names are not on the list of licensed Dolby manufacturers.
http://www.dolby.com/us/en/professional/licensing/licensed-dolby-manufacturers.aspx
These include
Fiio D07,
Muxlab 500081,
Parts Express Digital to Analog Converter (5.1-Compatible),
Orei DA34 Digital to Analog Audio Decoder SPDIF/Coaxial 5.1-Channel Input to RCA L/R/3.5mm Headphone Output,
Panlong Optical SPDIF/ Coaxial Digital to Analog RCA Audio Decoder Converter with 3.5mm Headphone Jack - Converts PCM DTS/ AC3 5.1CH Signal to 2CH Analog L/R Audio,
etc.
.
.
.
They certainly make 2ch sound, but is there a guarantee that the down mix is correct?
I am looking for something other than Gefen, because Gefen has exceptionally high level of jitter. See my post below.

Edits: 01/02/15

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Topic - Dolby audio decoder without Dolby License - dave789 18:22:39 01/02/15 (1)

There seems to be another one, but . . .(WyreStorm EXP-CON-DAC-D) - dave789 19:54:27 01/02/15 (0)

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