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John Curl's Blowtorch preamplifier part III
John Curl's Blowtorch preamplifier part III
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Old Yesterday, 09:14 PM   #12831
billshurv is online now billshurv  United Kingdom
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John Curl's Blowtorch preamplifier part III
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Originally Posted by Markw4 View Post
I think Benchmark considers the clocks, clock regeneration, and jitter reduction functions all to be part of analog. In ESS Sabre dacs the power for that circuitry inside the dac chips is also considered analog, such as VCCA, with the 'A' referring to analog. In addition, there is AVCC, the analog output reference. In other words, it isn't just the output stage.

I remember a discussion 28 years ago with Bob Stuart when I presented that argument and he was very clear that, whilst the analog side had been an issue in the 80s that, in his mind all those issues were solved. He did go on to win a lot of awards with his digital products. Of course he is making a lot more money selling snakeoil licensing now. Clever guy!
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Old Yesterday, 09:15 PM   #12832
Tournesol is online now Tournesol  Belgium
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Quote:
Originally Posted by Markw4 View Post
I think Benchmark considers the clocks, clock regeneration, and jitter reduction functions all to be part of analog. In ESS Sabre dacs the power for that circuitry inside the dac chips is also considered analog, such as VCCA, with the 'A' referring to analog. In addition, there is AVCC, the analog output reference. In other words, it isn't just the output stage.
Yes. And analog+digital power supplies.
That is exactly what some people improve in their Behringer DCX2496, plus the output stage, to transform a very cheap device ... in a 'high-end'* one ?

*Smiley here.
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Old Yesterday, 10:46 PM   #12833
phase is online now phase  United States
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Yep, along with cd players and more...
Digital is just high speed analog anyways, easier in many ways imo than the analog stuff.
Supersonic!
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Old Yesterday, 11:09 PM   #12834
Max Headroom is online now Max Headroom  Australia
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Originally Posted by 1audio View Post
The carbon black was added to improve the durability of the records, same as for tires. Probably the same source?? Color vinyl records are known for wearing out fast.
Thanks, I have read these assertions and others.
What I am interested in is supply chain and purity of 'carbon black' as used in vinyl records......anybody ?.


Dan.
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Old Yesterday, 11:17 PM   #12835
Max Headroom is online now Max Headroom  Australia
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Originally Posted by john curl View Post
Wow, so Benchmark considers clocks, etc as part of the ANALOG portion of the digital conversion, this makes sense. This is where I am at a loss. I can and have designed first class Class A, all fet, I to V converters, but I don't know how to improve the clocks, etc to any great extent. I already have a Sabre 9038 evaluation board, BUT I have to accept their selection of clocks, etc, and this does not seem good enough to take on the big boys of digital out there.
Jocko has selection of crystals/oscillators (the first step to good digital sound) down pat, I can hunt down his contact details if you like.


Dan.

Last edited by Max Headroom; Yesterday at 11:19 PM.
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Old Yesterday, 11:18 PM   #12836
billshurv is online now billshurv  United Kingdom
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John Curl's Blowtorch preamplifier part III
Historically vinyl formulations were different between plants and a guarded secret, so unlikely you will find that out. I'd call around hipster new boutique plants and ask where they get their pellets from then call them.


The real question is why?
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Old Yesterday, 11:23 PM   #12837
john curl is offline john curl  United States
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Thanks Max, I already have talked to Jocko about oscillators. This is a problem, because he has to hand select them from many. Not the best approach for production.
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Old Yesterday, 11:56 PM   #12838
Tournesol is online now Tournesol  Belgium
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Originally Posted by Destroyer OS View Post
Seems you're the only one who knows this... Everyone else I know is buying turntables from $750 to $100,000, and everything in-between that goes with them.
Are-you living in a museum ?
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Last edited by Tournesol; Today at 12:16 AM.
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