OPTIMO_ATX - truly linear ATX power supply

[Marcin_gps]

Will be announced in March. 

 

We should have the first production unit next week :)

[Marcin_gps]

OPTIMO ATX – world’s first truly linear ATX PSU for audiophiles – heat management.

 

One of the biggest challenges in linear power supply design is heat management, as heat generation is inherent for its nature, especially for high-current PSUs such as OPTIMO ATX. 

Full article in the EDITORIAL section here: https://jcat.eu/optimo-atx-worlds-first-truly-linear-atx-psu-for-audiophiles-heat-management/

[Marcin_gps]

The revolution in digital audio is about to begin 

 

https://jcat.eu/the-revolution-in-digital-audio-is-about-to-begin-optimo-atx-psu-final-prototype-sneak-peak/

 

[Evo-No-Revo]

Is anyone else having issues opening jcat.eu links?   Is the site down?

 

I have been getting this for three days...

This site can’t be reached

jcat.eu refused to connect.

 

(Update) For some reason it's working now.  All good.

[ASRMichael]

Works fine for me. No issue 

 

Update: Should have read all your post! 😜

[Exocer]

No issues on this end.

[Marcin_gps]

THE DEFINITIVE SOLUTION TO COMPUTER-BASED HI-FI SYSTEMS’ MOST NOTABLE WEAKNESS.

 

JCAT INTRODUCES THE ONLY 100% LINEAR COMPUTER POWER SUPPLY ON THE MARKET:

 

OPTIMO S ATX

 

 

https://jcat.eu/product/optimo-s-atx/

 

LOT 1 is available now. 

[The Computer Audiophile]

You beat me to it @Marcin_gps! 

 

This is really cool. 

 

[manisandher]

I'm sure the OPTIMO S ATX is superb. But I've had my Teradak fully linear PSU for nearly 7 years.

 

Just saying...

 

Mani.

[Patatorz]

2 minutes ago, manisandher said:

I'm sure the OPTIMO S ATX is superb. But I've had my Teradak fully linear PSU for nearly 7 years.

 

Just saying...

 

Mani.

Your Teradak is an ATX power supply (3.3/5/12v) to power a motherboard without any dc/atx module ?

[manisandher]

Yep.

 

"The host uses the module is a pure linear power chip, no ATX module. Do not use the switch power supply chip. The whole machine is pure separation type voltage stabilizing linear power supply."

 

http://www.teradak.com/products/105.html

 

Mani.

[Patatorz]

You can share the reference please ? 

[manisandher]

Just added above.

[Gavin1977]

Well done on the launch @Marcin_gps 

 

https://jcat.eu/product/optimo-s-atx/

[RickyV]

I do not think the teradak uses regulators capable of delivering 23A on every rail with less then 23uV of noise. 

[manisandher]

1 minute ago, RickyV said:

I do not think the teradak uses regulators capable of delivering 23A on every rail with less then 23uV of noise. 

 

No doubt you're right. But I never said it did 🙂.

 

I think saying this is a bit suspect though:

 

"JCAT INTRODUCES THE ONLY 100% LINEAR COMPUTER POWER SUPPLY ON THE MARKET"

 

Mani.

[RickyV]

17 minutes ago, manisandher said:

JCAT INTRODUCES THE ONLY 100% LINEAR COMPUTER POWER SUPPLY ON THE MARKET"

yes I saw that too, not sure what that means

[Marcin_gps]

14 hours ago, manisandher said:

Yep.

 

"The host uses the module is a pure linear power chip, no ATX module. Do not use the switch power supply chip. The whole machine is pure separation type voltage stabilizing linear power supply."

 

http://www.teradak.com/products/105.html

 

Mani.

I can’t discuss all products on the market, especially dubious products.

 

OPTIMO S ATX is the first legit truly linear ATX power supply on the market as far as I know. It is designed according to ATX 2.2. specs and Intel’s Desktop Platform Form Factors Power Supply Design Guide. It complies with EU safety directives for CE: CE 2014/35/UE, LVD, 2014/30/UE, EMC, 2011/65/UE RoHS II and 2015/863 RoHS III. It is safe to use.

 

All specs of OPTIMO S ATX are real-world measured values. It is a state-of-the-art product. 

 

Teradak does not say anything on their website except for power transformer used. And looking at the pictures, the way it is built, I have serious doubts one can call it an ATX power supply. 

 

13 hours ago, RickyV said:

JCAT INTRODUCES THE ONLY 100% LINEAR COMPUTER POWER SUPPLY ON THE MARKET"

 

yes I saw that too, not sure what that means

 

It is an ATX power supply in human language: https://en.wikipedia.org/wiki/Power_supply_unit_(computer)

 

Regards, 

Marcin

[manisandher]

7 hours ago, Marcin_gps said:

Teradak does not say anything on their website except for power transformer used. And looking at the pictures, the way it is built, I have serious doubts one can call it an ATX power supply.

 

The Teradak uses no buck converters, and yet outputs the following:

 

 

Having owned one for 7 years, with the top off many times to make various adjustments, I have no doubt that the the Teradak is a fully linear ATX power supply. But you go ahead claiming whatever you want.

 

I won't contaminate your thread any more...

 

Mani.

[Marcin_gps]

@manisandher it takes a lot more than a multi-rail PSU with ATX connectors to be able to call it an ATX power supply.

 

It is relatively easy to make such a PSU, but there will be compatibility issues with various motherboards and stability issues.

 

OPTIMO S ATX has a CPU with custom software which monitors all states and parameters of the PSU in real-time.  E.g. according to ATX requirements, the PSU must start within 500ms or shorter. The OPTIMO S ATX starts in 368ms (please see the screenshot below). These requirements are important in order to ensure compatibility with motherboards.

 

 

BTW - we power the CPU with a linear PSU too to keep the noise as low as possible

 

Regards, 

Marcin

[Marcin_gps]

Regarding CPU compatibility

 

It’s quite complicated. The OPTIMO S ATX has 23A on 12V line (12V is used for CPU). So technically we have up to 276W power. But let’s start by explaining what TDP is (Thermal Design Power) - this is a capability of dissipating heat from the CPU core. It is not the same as CPU power requirements. So a CPU categorised as 95W TDP can easily draw even 200W power (momentary)! The OPTIMO S ATX is capable of delivering 23A (30A peak for 2 seconds). So limiting compatible CPUs to 95W or lower does not make any sense for OPTIMO S ATX - this comes from Intel’s Desktop Platform Form Factors Power Supply Design Guide recommendation which we used during development. The Intel’s recommendation is mainly for their server platforms to ensure maximum compatibilities in any possible situation. So with OPTIMO S ATX  e.g. 125W TDP CPU, assuming moderate load, should work fine. My partner son’s PC equipped with i76800k CPU (TDP 105W) and GTX1080i graphic card works fine with OPTIMO S ATX even when he launches games. The problems start when you stress the PC by running e.g. a benchmark - then it will shut down after a while. It is clear that for practical use of an average music server nobody will run benchmarks so CPU utilization and hence power draw will stay on a lower level. I will modify description on the website as this can be very confusing.

 

Regards, 

Marcin

[Marcin_gps]

The 1st batch of OPTIMO S ATX is sold out already! I would like to thank all my customers for the trust.

 

PRE-ORDER for 2nd batch is now open and orders can be placed via jcat.eu. Shipping in March 2022 

 

We started shipping the PSUs to customers worldwide.

Below is a picture of the OPTIMO S ATX next to hd-plex 400W atx and my APL DSD-MR MKII DAC - just to give perspective how big the OPTIMO S ATX is:

 

 

 

I can't wait to hear your feedback. 

 

Best regards,

Marcin Ostapowicz

JPLAY & JCAT Founder

 

[Savolax]

@Marcin_gps Probably controversial topic for many but have you found any improvement on CD Audio Extraction quality on a system run with Optimo S ATX, or better, able to measure anything?

[Marcin_gps]

9 hours ago, Savolax said:

@Marcin_gps Probably controversial topic for many but have you found any improvement on CD Audio Extraction quality on a system run with Optimo S ATX, or better, able to measure anything?

 

@Savolax I have not tried ripping any discs on a PC powered by OPTIMO S ATX yet. 

 

Regards, 

Marcin

[Gato]

120 hours now that the JCAT Optima ATX is powered up and powering the i9-12900K+JCAT NET Card XE+SOtM tX-USBexp.
What can I say... Whouahhhh: timbre accuracy, warmth, details, realistic soundstage (no, no, no more than that).  I had dreamed of it, I really needed it, it's done: a pure delight!