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Ultimate-Preamplifier by Analog-Precision / Re: Please Read !
« Last post by David Samborsky on Today at 08:25:33 AM »
While I am intrigued by the Ultimate Preamplifier, at least for me, some of the use-cases for it are unclear.
For example - what is the easiest way to create a crossover using the UP? I know DEQX has a simple process that is using a mic and does its magic automatically.
How easy is it to create a correct, good sounding crossover? I am looking to replace my NHT XDA amp with the Ultimate Preamp + multi-channel amp.

Well - nothing like reading the manual  ;D
The manual directs you to download sample 2,3 or 4 way crossover templates from the download section. In other words, it is next to trivial to implement a xover with Audio Weaver + Ultimate Preamp.

Most people will use the available templates from our downloads page https://analog-precision.com/downloads/  and modify them for their own use case.

DEQX is truly a lightweight DSP platform compared to the UP whiuch uses a 4th generation SHARC DSP chip. By comparison DEQX uses a first generation SHARC DSP from Analog Devices and needs two of them just to process at 96kHz ! Their hardware design hasn't changed in decades and is hamstrung by legacy code. See here for a direct comparison with the UP https://analog-precision.com/home/pcg/

regards
David
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Ultimate-Preamplifier by Analog-Precision / Re: Please Read !
« Last post by Boerd on January 24, 2021, 11:49:40 PM »
While I am intrigued by the Ultimate Preamplifier, at least for me, some of the use-cases for it are unclear.
For example - what is the easiest way to create a crossover using the UP? I know DEQX has a simple process that is using a mic and does its magic automatically.
How easy is it to create a correct, good sounding crossover? I am looking to replace my NHT XDA amp with the Ultimate Preamp + multi-channel amp.

Well - nothing like reading the manual  ;D
The manual directs you to download sample 2,3 or 4 way crossover templates from the download section. In other words, it is next to trivial to implement a xover with Audio Weaver + Ultimate Preamp.
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Ultimate-Preamplifier by Analog-Precision / Re: Please Read !
« Last post by Boerd on January 21, 2021, 10:43:25 PM »
While I am intrigued by the Ultimate Preamplifier, at least for me, some of the use-cases for it are unclear.
For example - what is the easiest way to create a crossover using the UP? I know DEQX has a simple process that is using a mic and does its magic automatically.
How easy is it to create a correct, good sounding crossover? I am looking to replace my NHT XDA amp with the Ultimate Preamp + multi-channel amp.
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The Dark Room / Re: Unusual timing for DEQX anniversary sale !!
« Last post by David Samborsky on December 29, 2020, 04:44:16 AM »
Not a conspiracy theory at all.

Those forum donors will all come to their collective senses one day and see that there is very little return on their investment when all the moderators plug is Elektra and the website continually plugs Harmon. I already see some are not renewing and are no longer represented in the sponsors list. Imagine being OAD or Hulgich and paying all that money only to see the moderators chime in at any opportunity to plug Elektra or some other speaker. Don't take my word for it, I have plenty of screen shots (and emails, PM's) to prove it and if you go looking for yourself you will see. I myself was offered Elektra at a substantial discount from what was being sold in shops when I was thinking about buying Holton. I still have the email.

I believe there is a new website starting up soon that is not connected in any way to any manufacturer. I have been told that membership will be free. It will also host proper in depth technical reviews including test bench measurements of equipment being offered by the members/shops., similar to Audio Science Review. ALL FOR FREE. Imagine that, not having to compete with a forum of moderators all biased towards equipment that they own at your expense.

Yes and you got banned for reporting it and the only thing that happened was those crooked moderators who were involved are still there today and now just keep spruiking the same brand of amplifier at every chance they get !! And until recently I had not seen that PM. What a shocker to see something like that and how stereonet got away with it because nobody did anything about it at the time. Had I been the particular sponsor in question I would have been seeking legal advice and suing that bastard that runs stereonet to allow this to happen. The admin did nothing in the end except close down the forum for a few hours and then clean out the forum for any incriminating evidence. After that, the unsolicited PM's were replaced with spruiking the same amplifier by the same moderators at any chance they get so nothing really changed. The alleged amplifier vendor who gets a free ride is not even a payed up sponsor on the forum so go figure how this nefarious behaviour is allowed to continue :(

This same thing also happened to a local speaker manufacturer who risked his whole house to invest in plant and equipment only to have those promises to buy from him totally broken in favour of another local speaker manufacturer who got the sales. He went bankrupt in the end and lost his house and marriage in the process :( This thing where people waste your time and money and then turn their backs on you is quite a common theme here in Australia with the people in the industry. It happened to me too so I know it goes on. The problem is nobody is willing to speak out and seek proper legal advice which in hindsight they would have had a pretty good case so instead the culprits get away with it only to do it all again :(

Why would you want to be a sponsor of stereonet and pay 2K a year to have tiny bit of forum space with so many restrictions and at the same time having to deal with this crap ?? Even if you are a payed up sponsor you are not immune to being undermined by another sponsor or in that other example someone who is not even a sponsor !!

This forum software here is basically freeware and the server space costs me the bare minimum. Why would I pay Mr Rushton 2k a year for a tiny bit of forum space with so many restrictions ?? As soon as you stop paying him your forum disappears along with all of the posts !! They are not even available as an archive which is why most new vendors only last a year and never renew their sponsorship because it is a complete waste of money and time for the same reason that nobody ever discusses the UP on stereonet. Not only that the stereonet owner doesn't even support or own any locally made equipment of any substance. Not one bit of gear he owns is locally made and yet he has got some special deal at his show for the locals. Put them in a pint sized room and hope they don't realized they are being ripped off big time :(

Do yourself a favour and look elsewhere other than stereonet.

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Performance and Measurements / Re: DAC - THD + Noise @ 1kHz
« Last post by David Samborsky on December 07, 2020, 02:25:26 AM »
Bump !
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Minimal overshoot and ringing with a well defined transition period !



Expanded scale with equivalent time sampling rate of 100 Gs/s !

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Minimal overshoot and ringing with a well defined transition period !

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As smooth as ;)

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Performance and Measurements / Raw Output from the master clock oscillator
« Last post by David Samborsky on November 19, 2020, 09:23:10 AM »
Very well defined with no overshoot and smooth crossover transition !

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Performance and Measurements / Frequency Measurement
« Last post by David Samborsky on November 19, 2020, 09:19:11 AM »
Frequency is pretty much spot on !!



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