ASIO is a hardware specific driver provided by the audio interface manufacturer. WAS and MME are generic audio driver applications provided by Microsoft Windows. MME was the only Windows audio driver from Windows 95 to Windows XP. The WAS application was added in Windows Vista and is also in Windows 7, 8, 8.1 and 10.

ASIO4ALL is an audio driver that makes MME appear as ASIO to a DAW. Most DAW developers don't like ASIO4ALL because it can create problems.

Microsoft created MME in Windows to support computer audio cards and CD-ROM audio. WAS adds the capability to handle multiple audio streams at one time.

Can you access Wikipedia? Here is an article about MME: +++ Wikipedia MME Article +++

+++ HERE +++ is a short article about WAS or WASPI.


Jim Fogle - 2025 BiaB (Build 1128) RB (Build 5) - Ultra+ PAK
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