10 thoughts on “OAS Development – From Blueprints to OAS 7

  • 03/24/2019 at 09:53

    Hi Jason,

    I think that this is principally a performance upgrade, so I wouldn’t expect that it would have a direct effect on the sound of the instrument, except in circumstances where the CPU is being overloaded. On digital systems this situation tends to distort the sound, so if this is happening I would expect that with a more powerful processor on board, a cleaner, better quality sound would be produced.

    We can certainly expect to see shorter boot up times, a faster response to OAS menu commands, faster saving and retrieving of user data, and the ability to run effortlessly the more demanding OAS activations that I know some owners have had issues with.

    I know that Karlheinz Hack at Wersi-Studio Hochrhein bought up all the stock from the previous company when it went out of business so as Curt recommends, it’s worth contacting him to see if he can fit you an EA3 board as part of the upgrade. Then you would have a great instrument!


  • 03/22/2019 at 12:38

    Hi everyone,

    Good news for OAS owners. This is featured in the latest newsletter from Wersi – Studio Hochrhein (translated from the German)

    OAS now with Windows 7
    “Support for Windows XP was discontinued years ago. This made it more and more difficult to get hardware components on the market for which there were still XP drivers. That’s why we decided to implement the OAS system on Windows 7. This was a time-consuming undertaking, as the OAS system was not actually designed for Win7 and therefore there is no corresponding driver for the SG12 card. However, we are pleased that it is now successfully completed and we have prepared a ready-made package with everything necessary already installed”

    And this additional information from the Wersi – Studio Hochrhein web site (also translated from the German)

    New, up-to-date PC hardware for OAS instruments
    “Is the PC hardware in your instrument now reaching its performance limit?
    No problem: we offer you a hardware upgrade that will make your OAS instrument fit for the current software with its sometimes power-hungry sound packages.

    You get:-
    A new, powerful AMD motherboard with AM3+
    6×3.5 GHz CPU,
    8 GB RAM
    128 GB SSD
    A powerful power supply.

    The system will be reinstalled with Windows 7 Home.

    Price: €590 ready configured”

    It’s good to see that Wersi are still supporting the OAS models, and giving them a new lease of life with this upgrade. I’m reminded of that famous comment by Mark Twain when his obituary unexpectedly appeared in the newspaper:-

    “Reports of my death have been greatly exaggerated!”



    • 03/23/2019 at 09:59

      Excellent find Jeff! To help ensure this gets exposure I’ll copy it up to a dedicated post and also share over on our Facebook page.

      • 03/23/2019 at 10:52

        I do the Same on my website Jeff and Curt. Its perfect news, the order for me has already been sent to WERSI-Studio Hochrhein.

        • 03/24/2019 at 06:46

          John, I figured you might be one of the first to jump in. Please keep us posted on how it goes and what you think once implemented.

    • 03/23/2019 at 10:44

      Hi all,
      I am wondering how effective this upgrade would be if you have the EA1 or EA2 board, and not the latest EA3 board. I have been told that the EA1and EA2 boards could be the cause for unstable volumes and other sound delivery issues which I’m currently having. Would it be wise to upgrade to Windows 7 without the EA3 board installed?
      Is there an EA3 board upgrade available?

      • 03/24/2019 at 10:37


        I was considering upgrading to the EA3 board before I got my OAX1. They wanted 650 euros for a used one, which is all that’s available, and 150 euros for the amplifier as it is not built in like the EA2.



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