ASIO4ALL Official Home

Universal Windows ASIO Driver

Version 2.19

  • No new features, bug fixes only.
  • This version officially supports Windows 10 and Windows 11.
  • Also confirmed to work with Windows 7 and Windows 8, with some minor GUI visual artefacts, though.
  • Report bugs to feedback@asio4all.com!

Changes since version 2.18

  • Fix aggregation issue when mixing WaveCyclic output and WaveRT polled input devices, resulting in input signal distortion.
  • Fix sporadic host reset loop in Studio One (and may be other hosts, too).
  • Remove PnP ID from device tooltip window, thus cleaning up the GUI somewhat.
  • Fix detection of Bluetooth device connect/disconnect status. This would have resulted in some connected devices disappearing and some disconnected ones visible.
  • Fix minor resource leak across host reset requests.
  • Some minor tweaks to WaveRT buffer handling.

ASIO4ALL 2.19 Download ⮱

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10 responses to “Version 2.19”

  1. manny Avatar
    manny

    version 2.18/2.19 is an improvement on2.17 which broken my set up. thanks for the improvements.

    Reply
  2. KJ Avatar
    KJ

    I found a new bug in ASIO4ALL. When using “Studio One“ in WaveRT device mode, requesting the buffer size fails.
    Could you please look into this issue? Thank you very much.
    Best regards 🙂

    Reply
    1. L Avatar
      L

      Try using ASIO4ALL UI (User Interface) was a bug since 2.17 .

      Reply
  3. L Avatar
    L

    For some reason, 2.19 [Final] doesn’t work for many people, it produces no sound at all. However, 2.19_Test (which was linked in your 2.18 post: https://asio4all.org/downloads/ASIO4ALL_2_19_Test.exe ) works very well. I’m using Realtek Audio; WASAPI and Steinberg Built-in both work fine.

    Reply
    1. Michael Tippach Avatar
      Michael Tippach

      Try to set the ASIO buffer size to >= 15ms, as an experiment. Does this make a difference?

      Reply
      1. L Avatar
        L

        Yes, works for me under this config:

        ASIO Buffer Size: 768 spls (16/21 ms)
        Low Power Mode: Off
        Input: disabled
        Output: headphones only
        Latency Compensation (in/out): 16 samples
        Sample Rate: 48 kHz
        DAW: Reaper 7.69 (Apr 2026)
        OS: Windows 11 Home 25H2 (Apr 2026)
        Audio drivers: Realtek 6.0.9915.1 (Nov 17, 2025)

        Reply
        1. admin Avatar
          admin

          Have you been able to pick any ASIO buffet size less than 10ms on previous versions?

          Reply
          1. L Avatar
            L

            Only with 2.19_Test and 2.16

  4. KJ Avatar
    KJ

    Thank you for your great work on ASIO4ALL!
    In v2.19 you fixed:
    “Fix aggregation issue when mixing WaveCyclic output and WaveRT polled input devices, resulting in input signal distortion.”
    But the reverse combination still has the same bug:
    Input: WaveCyclic (USB 1.1 audio device)
    Output: WaveRT polled (onboard Realtek audio)
    Symptoms:
    Audio buffer drift over time
    Increasing output delay
    Output signal distortion, crackling, static noise
    This is the same clock drift/sync issue, just on output instead of input.
    Is this the issue that the previously mentioned buffer drift compensation was meant to address?
    Could you please fix this reverse case in a future version?
    Many users with USB 1.1 inputs have this problem for years.
    Thank you! 🙂

    Reply
    1. Michael Tippach Avatar
      Michael Tippach

      Clock drift correction is not yet implemented. The sample rate display feature currently only helps to find out whether clock drift might/might not be an issue with individual devices.

      Reply

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  • Low Power Mode

    Low Power Mode

    This is a global option – for the current audio host application – telling the ASIO4ALL main audio thread how to spend its idle time, i.e. the time when not calling the DAW audio processing handler. The default for this option is “enabled”, potentially lowering CPU utilization in idle mode. Depending on the current ASIO4ALL

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  • Hardware Buffer on/off (Obsolete)

    Hardware Buffer on/off (Obsolete)

    This feature has been removed in version 2.17!The only purpose it did serve – more than 20 years after its introduction – was to confuse users needlessly. Enables the hardware buffer for the highlighted device. This only works for so called “WavePCI” miniports, as other types of WDM drivers do not usually allow direct access

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  • Allow Pull Mode (WaveRT) (obsolete)

    Allow Pull Mode (WaveRT) (obsolete)

    In version 2.17, this feature has been replaced by the “Alternative Buffer Synchronization” – option! There are two basic access methods for a WaveRT device, “pull-mode” (also called “event-mode”) and “push-mode” (also called “polling mode”). If this box is left unchecked, ASIO4ALL will not use “pull-mode”, otherwise it will use it whenever possible. The default

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