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In Reply to: RE: Monoprice referred me to this Product that I Think Should Work posted by Mel on September 14, 2011 at 09:01:35
Follow Ups:
In my comment below, I should have listed the model number of the monoprice product. What they directed you to is actually the model that I have and I know for a fact that it doesn't work because I've already tested it.
"I have a similar monoprice box -- an HDMI to coax/optical converter (aka HDMI de-embedder) -- and when it's fed Dolby Digital via HDMI, the optical output will be either 5.1 Dolby Digital or 2.0 Dolby Digital (there's a switch). I tested mine last night just in case it could be used to convert Dolby Digital to PCM, but the DAC I tested it with couldn't lock onto the signal, even in 2.0 mode (so it doesn't convert Dolby Digital to PCM)."
Anyone have experience with the little Gefen GTV-DD-2-AA? Is it a quality unit? How much will my sound suffer relative to the Lavry? Does anyone know what chip it uses?
Thanks.
Actually, it's more than $86 overpriced as the monoprice product that you were directed to -- Product ID 5557, which does even more -- also has analog stereo outputs. That 3.5mm jack in the back provides an analog stereo output from what you feed it via HDMI. Just get a 3.5mm-to-stereo RCA cable and you're set.
Did you change your mind on using the DAC in your system? I ask because neither option, the Gefen nor the monoprice, will provide a 2.0 digital PCM signal for a stereo DAC from a Dolby Digital signal. They will, however, (obviously) provide an analog stereo signal.
Below is a link to the 3.5mm-to-stereo RCA cable 3ft version, but they have lengths from 6" to 50' of that type of cable.
My problem is that I have a long run (about 18') where I've been using Toslink. I can use analog cables there already from the DAC in the cable box, but the sound suffers compared to Toslink into the Lavry. That's why I was asking about the quality of the Gefen unit. If it did the job VERY WELL it would be worth the money to me.
So the question is how good can two channel from Dolby Digital be, and whether this unit can do the job well!
Each box, the Gefen and the monoprice, must convert to PCM in order for their onboard D-A converter (the one that feeds the analog stereo output) to work. It would be nice, at least for people who wanted a 2.0 PCM signal instead of a Dolby Digital or DTS signal, if you could just have the signal that feeds that D-A converter available on the coax/optical output.
I would bet that the sound quality from the Motorola FIOS box, the Gefen converter and the monoprice converter, will be no match, by far, for the audio quality that you get from the Lavry DAC fed by an optical connection. The reason is that, even with a PCMed lossy Dolby Digital signal, the analog stage of those devices are no match for the analog stage in the Lavry DAC. Most people do not realize that the analog stage contributes more to the sound quality of a DAC than just about any other part of the DAC. The total cost of the analog stages in the other devices, combined , is less than $6 -- and that's being generous.
If I come across another option or, better yet, a simple device that just converts a Dolby Digital/DTS signal to 2.0 PCM, I'll try to remember to post a link here.
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