ADC Options to play vinyl through my DSP preamp

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vinylnvalves
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#1 ADC Options to play vinyl through my DSP preamp

Post by vinylnvalves »

Since going fully active with my speakers I haven't played any of my vinyl, as it doesn't sound as good as digital through my Nadja DSP. I suspect that the ADC input in the Nadja is the weak link. I now have decided it's time to revive my turntable. Having had my ears opened up to the superior sound of using I2S for digital input, I think I would like to use an ADC with I2S output so I can play analogue via my riaa preamp realtime.
Has anyone got any positive feedback either from digitising vinyl or similar to share. I have seen http://hifimediy.com/ADC-i2s, and a DIY option - Beis AD24QS using the same chipset.
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Mike H
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#2 Re: ADC Options to play vinyl through my DSP preamp

Post by Mike H »

If it's any help I'm using a HiFimeDIY DAC which I think is very good.

For RIAA pre-amp plus ADC I'm using an ART USB Phono Plus, but I mostly use it as the main analogue RIAA pre-amp, and to me anyway, it sounds as good as digital, only the record surface noises give it away that it's a vinyl record.

HTH
 
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vinylnvalves
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#3 Re: ADC Options to play vinyl through my DSP preamp

Post by vinylnvalves »

Thanks for that. I will order the Hifime ADC, see if I can hear any difference over the standard ADC input on the Nadja DSP. If I can I may consider building the Beis ADC, hopefully there maybe one based on a 384khz capable chipset, I can find in a " kit" form instead.
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Mike H
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#4 Re: ADC Options to play vinyl through my DSP preamp

Post by Mike H »

Yes ultimately will be a case of trying things for yourself. :D
 
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DSJR
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#5 Re: ADC Options to play vinyl through my DSP preamp

Post by DSJR »

I can't really help with personal experiences, but please take a look at some pro retailer websites too, such as Thomann, to see if they sell anything suitable at the right price..
vinylnvalves
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#6 Re: ADC Options to play vinyl through my DSP preamp

Post by vinylnvalves »

Got the hifime ADC today. Now I have a big challenge where the hell do I get a hdmi to USB type B cable from!!
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pre65
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#7 Re: ADC Options to play vinyl through my DSP preamp

Post by pre65 »

The only thing necessary for the triumph of evil is for good men to do nothing.

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vinylnvalves
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#8 Re: ADC Options to play vinyl through my DSP preamp

Post by vinylnvalves »

That one on eBay's a USB A to USB B got loads of them already. This ADC has a hdmi socket as it's output, reckon I am going to have to bodge something, will start reading up on the protocols.
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Mike H
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#9 Re: ADC Options to play vinyl through my DSP preamp

Post by Mike H »

On their web page: "can be connected to a HDMI to USB device like our UH1 Digital"

Which seems to indicate this:

http://hifimediy.com/index.php?route=pr ... uct_id=176
 
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vinylnvalves
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#10 Re: ADC Options to play vinyl through my DSP preamp

Post by vinylnvalves »

I am connecting it into my amanero i2s input card, which like their device has a USB B connector. After extensive browsing last night I cannot seem to find a lead or adaptor so I will be knocking something up. What I am suprised about is they don't sell this unconventional interface cable on their website, to interface between two products they sell.
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Mike H
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#11 Re: ADC Options to play vinyl through my DSP preamp

Post by Mike H »

Hmmm!
 
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vinylnvalves
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#12 Re: ADC Options to play vinyl through my DSP preamp

Post by vinylnvalves »

I am confused on how to connect the ADC to my Amanero converter. I have been given the following data for connecting to the ADC.
IMG_0142.JPG
. What's confusing me is that the USB input has only 4 connections ( 5 if you include the plug shield). I also know that a couple of those pins feeds +5v to power the USB device. So I don't understand how to get the 4 signals into the device. Help please.
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Mike H
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#13 Re: ADC Options to play vinyl through my DSP preamp

Post by Mike H »

I'm confused as well, been looking on net for half an hour, but don't know what I'm looking for
 
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vinylnvalves
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#14 Re: ADC Options to play vinyl through my DSP preamp

Post by vinylnvalves »

USB input is
IMG_0143.JPG
. But which of the hdmi pin call outs are data + and data - is the million dollar question.
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Nick
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#15 Re: ADC Options to play vinyl through my DSP preamp

Post by Nick »

That diagram makes me think they are not sending USB over HDMI at all (you could do this just using a single differential pair), but are sending the four i2s signals using the four differential pairs. At the receiver end you would need a quad differential to single converter, which is what the DS90LV048 is.

I think you have to wire a HDMI connector as shown to a DS90LV048, the the four outputs of the receiver give you i2s
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