OPTIMO ATX – world’s first truly linear ATX PSU for audiophiles. We are almost there.

OPTIMO ATX truly linear audiophile atx power supply

The heart of JCAT OPTIMO ATX PSU’s is a separate  Linear Regulator Board for each power line; 12V, 5V and 3.3V, providing 23A of continuous current. Its main components are: rectifier, smoothing capacitors bank and linear regulators.



For the OPTIMO ATX whopping current we designed unique active rectifier. It is using MOS FET transistors instead of diodes that are switched at zero points of AC waveform by special circuit. The MOS FET in this application has forward resistance below 1 mOhm (0.001 Ohm) – this outperforms diode resulting in much better dynamic response. JCAT designed analog control circuit with so called “floating ground” which means that there is no ground connection for rectifier at any point that otherwise might be path for introducing noise into DC circuit. This further ensures best noise performance as with GHz speed of MOS FETs there is practically no switching noise.


Eleven low impedance capacitors of total 110mF (110.000 uF) will ensure outstanding dynamic performance of OPTIMO ATX. On the graph below, the green line shows output voltage. You can observe superb response for step change of load (turquoise line).


We chose high quality 105 Celcius degrees capacitors for trouble free operation in years to come, and designed in significant margin so even with some capacitance lost over time, there will be no effect on the OPTIMO ATX’s performance. Built to last, as we like things in JCAT.


The OPTIMO ATX is world’s first truly linear ATX power supply with no switching power circuits at any point. For cutting edge performance, instead of discrete elements, we used 11 state of an art LT3086 integrated linear regulators working in parallel. In result, the RMS noise of the OPTIMO ATX is impressive <15uV. We carefully optimised the PCB layout for shortest signal path, impedance and heat dispatch.



High quality components, from resistors to connectors. Significant design margins. Gold plated 70 um copper PCB. Heat transfer elements made of pure copper. EU placed supply chain. Everything to ensure superb quality. The OPTIMO ATX PSU complies with these safety regulations: directive 2014/35/UE EMC, 2014/30/UE RoHS 2, 2011/65/UE, EN 62368-1, EN 50419 and EN-61558-1.


All above information and specifications are preliminary/prototype and final product may vary.


Shop the full JCAT collection here

14 thoughts on “OPTIMO ATX – world’s first truly linear ATX PSU for audiophiles. We are almost there.

  1. jongchae lim says:

    HDPLEX 500W ATX linear power supply
    I am waiting for this
    OPTIMO_ATX-Linear ATX power supply
    This will also be released
    Is the case made of stainless steel?.
    Is the hot heat handled well?.
    Send us an email when done and we will pre-order it.
    Thank you

    1. Marcin Ostapowicz says:

      The enclosure will be a mix of stainless steel and aluminum. There are large heatsinks mounted directly on the linear regulator boards, so please don’t worry about heat dissipation. It’s calculated and tested extensively. We will announce more details very soon.

      Best regards,
      Marcin Ostapowicz
      JPLAY & JCAT Founder

  2. Chris says:

    I will soon be installing a new system as following:
    Fractal Define 7 (with 4 fans)
    Gigabyte Z390 UD ATX
    – Intel Core i9-9900K (3.60GHz, 8-Core) TPD 95W
    – Noctua NH-D15 Chromax
    – RAM CORSAIR Dominator Platinum DDR4-2400MHz CL10 32GB (4*8) CMD16GX4M2B2400C10 2400MHz
    – Intel PRO/1000 CT single port desktop adapter
    – SAMSUNG SSD 850 PRO 256 GB 2.5″ externally powered by Phobya External Power
    – JCAT NET FEMTO card powered externally by the BOTW P&P ECO 5V – 6V MKII Sbooster.
    – SOtM tX-USBexp powered externally by Farad Super3
    – SOtM sCLK-EX externally powered via SOtM sPS-500
    – Display Samsung SyncMaster 225BW HDMI connected
    – Samsung Portable SSD T5 500GB USB-C connected
    – Standard USB mouse
    – Apple USB Keyboard A1242 wired
    Does the OPTIMO ATX will

    Will the OPTIMO ATX be able to power such a system without any problems or overheating?
    If so, when and at what estimated price will the OPTIMO ATX be available?

    Kind Regards

    1. Marcin Ostapowicz says:

      Hi Chris,

      Yes, it will power this config without a problem 🙂

      Best regards,
      Marcin Ostapowicz
      JPLAY & JCAT Founder

  3. John Rocke says:

    When will this be available for purchase?

    1. Marcin Ostapowicz says:

      Hi John,

      The OPTIMO ATX PSU will be announced in March.

      Best regards,
      Marcin Ostapowicz
      JPLAY & JCAT Founder

  4. Arthur says:

    Beautiful work guys. My first question is price. If reasonable then I’m certain you’ll sell many and I’ll be a customer.

    I am interested in just the regulator board. I’ll make my own case and with the right transformer

    Thank you,

    1. Marcin Ostapowicz says:

      Hi Arthur,

      Thank you! The prognosed price is 3000-4000EUR.

      We do not plan on selling the linear regulator modules separately.

      Best regards,
      Marcin Ostapowicz
      JPLAY & JCAT Founder

  5. David says:


    Do you plan to release a more affordable version of this PSU later, perhaps an “Initio ATX” ?

    Another question. I take it that your design goal with the Optimo ATX was to minimize noise on the DC output. Does it also create low noise (EMI) on the AC input, and low RFI? Conventional PSUs create a large amount of both.

    1. Marcin Ostapowicz says:

      Hi David,

      There are no plans for Initio ATX at the moment.

      Yes, there is no EMI/RFI on the AC side. This comes from truly 100% linear design.

      Best regards,
      Marcin Ostapowicz
      JPLAY & JCAT Founder

  6. christian rappo says:

    Hi Marcin,
    Any news about an OPTIMO ATX PSU price and release date?
    Kind Regards

    1. Marcin Ostapowicz says:

      Hi Christian,

      Yes – Good news 🙂 first batch is being manufactured and the PSU is scheduled for release (and shipping) in September. Price and all the details will be announced in a newsletter.

      Best regards,

  7. roman says:

    Can i use it with my hybrid PC (workstation/audiophile)

    3950X + geforce 3080
    motherboard asrock creator
    64gb of ram
    2 SSD
    1 hard drive

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.