WMA to SD2 Converter

Create Sound Designer 2 files from WMA audio

Drop files here. 1 GB maximum file size or Sign Up
to
Facebook Amazon Microsoft Tesla Nestle Walmart L'Oreal

Legacy Pro Tools

SD2 is the classic Digidesign format — convert WMA for vintage session compatibility.

Professional Quality

SD2 stores uncompressed audio — WMA is decoded into production-grade format.

Online Processing

No Pro Tools needed — produce SD2 from WMA in your browser.

How to convert WMA to SD2

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose sd2 or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your sd2 file right afterwards

About formats

WMA (Windows Media Audio) is a family of proprietary audio codecs developed by Microsoft and first released in 1999 as part of the Windows Media framework. Created to compete with MP3 and AAC, WMA Standard uses perceptual coding to deliver what Microsoft claimed was near-CD quality at bitrates as low as 64 kbps — roughly half the data rate MP3 typically needed for comparable results. The codec family grew to include WMA Professional for surround sound and high-resolution audio, WMA Lossless for bit-perfect archival compression, and WMA Voice optimized for spoken content at very low bitrates. Deep integration with Windows, Windows Media Player, and the Zune ecosystem gave WMA a strong distribution advantage throughout the 2000s, and digital rights management (DRM) support made it attractive to online music stores of that era. Encoding and decoding are handled natively by Windows, requiring no third-party software for playback on any Windows machine. Cross-platform support has improved through libraries like FFmpeg and GStreamer, though WMA remains less universally compatible than MP3 or AAC on non-Microsoft devices. The format still appears in legacy media libraries, though newer codecs have largely taken its place for streaming and portable use.
Initial release: 1999
Sound Designer II (SD2) is a professional audio format created by Digidesign around 1988 as the successor to the original Sound Designer format. For over a decade, SD2 was the standard interchange format in professional recording studios, especially those on Macintosh systems. It stores uncompressed linear PCM audio at up to 24-bit resolution with sample rates used in professional production (44.1, 48, 88.2, and 96 kHz). A distinctive technical trait is its reliance on the classic Mac OS resource fork for critical metadata — sample rate, bit depth, and channel configuration — while audio data resides in the data fork. This design worked elegantly within the Mac ecosystem but created portability challenges when files moved to Windows or Unix. A key advantage was SD2's support for multiple channels in a single file and tight integration with the Pro Tools editing environment, enabling non-destructive region-based editing. The format also carried loop points and markers, making it valuable for sample libraries. As Avid Technology shifted Pro Tools toward WAV and AIFF, SD2 usage declined, but millions of legacy session archives still contain SD2 files needing occasional conversion.
Initial release: 1988

Frequently Asked Questions

Why convert WMA to SD2?

SD2 is the Digidesign format for legacy Pro Tools. WMA cannot be imported into vintage Pro Tools sessions — SD2 is needed.

What opens SD2?

Pro Tools, Sound Designer II, Audacity, and classic Mac audio applications support SD2.

Is SD2 still used?

SD2 is for legacy session compatibility — modern Pro Tools uses WAV or AIFF.

Can Pro Tools import WMA?

Older Pro Tools versions cannot. SD2 conversion provides guaranteed compatibility.

Can I batch convert?

Upload multiple WMA files and produce SD2 simultaneously.

WMA to SD2 Quality Rating

3.0 (1 votes)
You need to convert and download at least 1 file to provide feedback!