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USB phono pre..(ADC 24/96...192)

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USB phono pre..(ADC 24/96...192)

Postby listener666 » 03 Mar 2011 17:54

While waiting for a new job contract I have decided to transfer my LP's to hard disk at 24/96 or 24/192.......they will be played via a laptop and DAC ....(another discussion I think)

so.........the Garrard 301 will plug into one of these...........

Could I have opinions/experience on the following:

http://www.sounds4uentertainment.co....ace-4971-p.asp

I like the fact that I can use this as a pre as well, with analogue volume and without a PC

and

http://www.etcetera.co.uk/products/TER010.shtml

smaller and more compact but only 24/96...needs pc if used as a pre amp

and
http://www.terratec.net/en/products/..._USB_2084.html

24/192....needs pc for digital volume about £ 175

need to buy soon ...so any comments appreciated
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Postby jiiteepee » 03 Mar 2011 21:18

Two of your links are not valid.

EMU 0202 USB would be a low budged (<100£) USB audio device which supports recording up to 24-bit/192kHz. Though, you would need a phono pre-amp ...

Check also this thread.

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Postby Werner » 04 Mar 2011 15:58

There is absolutely no need for recording over 88.2kHz or 96kHz, and the money saved (if any) really should go towards optimising the source (i.e. phono stage).

Ask yourself: what sounds best? A stellar 44.1kHz ADC, or a consumer-level 192kHz one?
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Postby rkay5 » 22 Mar 2011 08:27

Hi,
I have a E-MU 0404 usb I recorded LP's at 24Bit 88.2KHz and sounds very good thing is what you have before ADC that counts.Mine is a modified thorens TD150 with Mose/Hercules psu/Audioquest PT-7/Denon DL103R, Pro-ject phonobox SE(got 1 week ago) Creek Evolution 5350 integrated amp (also new about 2 weeks ago)tape out to E-MU 0404.I get a recording that is true to what was mastered to vinly if it's great sounding LP the files sound great if LP is lo-fi the files lo-fi
and so on.To hear some of what I've recorded go to this link and download files are apple lossless play with itunes or foobar with ALAC decoder:
http://www.mediafire.com/?sy104k6ekk5zb
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Thorens TD150/Sole sub-chassis/Mose+Hercules/Rokan NIMA Unipivot/Denon DL-S1/Jolida JD9/Cambridge Audio Azur 851A/Mytek Stereo 192DSD DAC
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Postby Whitneyville » 23 Mar 2011 00:48

Werner, sometimes it's not that simple here. In the US market, it's harder to find a stellar 44.1Khz ADC than an outstanding 88Khz ADC. That's US "mass marketing think" for you.
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Postby Werner » 23 Mar 2011 07:21

That was just to drive something home: a component's implementation matters more than the figures it sports on its facia.
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Postby davidsrsb » 23 Mar 2011 08:41

24bit 48 ksps will work very well and lead to much smaller file sizes and therefore easier click editing

Computers work far better with 48/96 than 44.1/88.2 and I would avoid the latter unless you are planning to burn audio cds
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Postby Werner » 23 Mar 2011 08:54

davidsrsb wrote:Computers work far better with 48/96 than 44.1/88.2


Could you elaborate?

The only time this is true is when an ADC or DAC runs at a multiple of 48kHz and is physically not capable of running at a multiple of 44.1kHz, so that on-the-fly sample rate conversion is required.
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Postby davidsrsb » 23 Mar 2011 09:47

It depends on the Windows version. Vista and Win 7 are transparent.
XP and older used Kmixer, which tends to work at 48 KHz internally
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Postby Werner » 23 Mar 2011 09:58

I have XP.

Months ago I looked for evidence of hidden resampling
between my ADC/DAC and the OS. I couldn't find any.
And trust me, I know how to look for AA and AI filter effects.
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Postby Whitneyville » 24 Mar 2011 06:37

I'm still on XP Pro also, and old "Frank" here does like 48/96/128 etc. better than the "odd" 44.1/88.2 frequencies. My AVID A/V card supports rates up to 192Khz, but that's insane. My Canon XLIIs with the added "sound board" handles anything up to 192Khz too. At 48Khz, I can record in stereo and still "overdub" in stereo on the mini DVT, then "bounce them down" in "post".
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Postby davidsrsb » 25 Mar 2011 04:58

Several cartridges seem to have tip resonance at about 22 KHz, many ADCs behave badly at the Nyquist frequency, so 44.1 KHz is a bad choice. There may be no music content above 18 KHz on many of my LPs, but surface noise is there. At 48 KHz sampling I can low pass filter at about 20 KHz in the digital domain, or use it as dither
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Postby Whitneyville » 28 Mar 2011 02:44

David, being of the lazy persausion, I just low-cut at 15 Hz and high-cut at 17.5Khz, and set the "noise floor" setting just high enough not to "punch holes" in the music. I do the low and high cut at the pre-amp, so I don't have to deal with strange "artifacts" and IM's.
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Postby davidsrsb » 28 Mar 2011 12:18

That is a perfectly sensible way of doing it. Few of my LPs have content much above 15KHz and below 15 Hz is warp rubbish.

Most users will be depending on the ADC input digital filtering, which can be dubious
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Postby duficity » 06 Apr 2011 14:07

Try a Rolls v530 with usb output. Works great for file transfers
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