John Curl's Blowtorch preamplifier part III

[Jakob2]

<snip>
No need at all, but please remember that the plural of anecdote is not data, nor is it proof.

Nevertheless it can be evidence..... 🙂

 

[billshurv]

I don't know Cidious so I cannot take anything he says as evidence though. It's at best metadata.

 

[Evenharmonics]

No need at all, but please remember that the plural of anecdote is not data, nor is it proof.

But the believers don't believe that, thus "never ending debate". 😉

 

[Evenharmonics]

Nevertheless it can be evidence..... 🙂

It sure can be but not the kind you are thinking of.

 

[FdW]

I don't know Cidious so I cannot take anything he says as evidence though. It's at best metadata.

Metadata is data, it's data that describes the (underlying|refered|described) data.

 

[billshurv]

OK rephrase as 'input to meta analysis'.

 

[scottjoplin]

Nevertheless it can be evidence..... 🙂

It depends, not if it's just repetition without variation, this is Evidence.....
YouTube

 

[scott wurcer]

Metadata is data,

The term is misused here so I would usually try to use "metadata". The typical meaning here is reported results with no scrutiny or review of any kind, simply numbers of anonymous votes.

 

[Markw4]

That's only a DAC?

Do you want good measurements or not? That's what it costs. If you want good sound too, then depending on what constitutes 'good sound' for you, it could cost more.

 

[billshurv]

The ask was for ADC and DAC together with shared clock.

 

[1audio]

I have not seen a premium ADC board on ebay. There are some modest 100 dB SNR based boards. Getting real performance from an ADC is not easy. I think the best bet for cost effective would be either an EMU 1212m/1616m or a Lynx L22 second hand. Otherwise a QA401, now supporting ASIO, will get you very close to the state of the art for a reasonable price and ready to go.

For many tests I would not want the clocks common on the ADC and DAC. The common clocks could hide some possible artifacts.

 

[Markw4]

The ask was for ADC and DAC together with shared clock.

That was the preference expressed. There is nothing of that sort that measures well and is low cost that I know of. Seem likely it is because there is relatively little demand for such a thing. At least the dac part is possible.

 

[scott wurcer]

The Scarlet 2i2 and ARTA worked fine until the latest WIN10 upgrade but a cheap Soundblaster worked with ARTA under ASIO. I got the Soundblaster to work at 48/16 under Python with simultaneous play/record on the same clock.

 

[scott wurcer]

Seem likely it is because there is relatively little demand for such a thing.

It is known as a DAS and National Instruments would probably disagree with that opinion.

 

[billshurv]

Reminds me I must test my Scarlet 6i6 on linux.

 

[Markw4]

The Scarlet 2i2 and ARTA worked fine...

Depends on what people want want to use something like that for, doesn't it?
HD measurement with a notch filter is pretty easy. 20-tone IMD may be a little more complicated.

 

[Markw4]

It is known as a DAS and National Instruments would probably disagree with that opinion.

Somehow I wouldn't expect they sell as many audio instrumentation systems (especially at very low cost as was requested), as there are dacs sold for music enjoyment. Isn't the demand for the latter much higher?

 

[Zung]

The Scarlet 2i2 and ARTA worked fine until the latest WIN10 upgrade...

They work fine under ASIO with the Win10 version 1803/OSBuild 17134.648 I'm running; it's the latest public (non-preview) build.

 

[TNT]

Ah, if measurement is the only issue, and you aren't too picky re how it sounds, Khadas Tone Board dac measures quite well for $99.

Sums up the industry state of the nation and why it can't really progress 😉

//

 

[1audio]

I think Win 10 is up to 1809. I'm running it without obvious hiccups. I would understand not rushing however.