SFD is a 32-bit Audio VST plugin designed for echo and delay effects, featuring a unique dual-channel approach that allows independent control of the left and right audio channels. This design enables users to create wide stereo signals from mono audio sources without interference between channels. The plugin's algorithm is based on a 'side by side' audio emphasis technology, providing enhanced flexibility in shaping stereo soundscapes.

The plugin's dual nature supports the creation of stereo vocal effects from mono inputs, making it ideal for vocal processing and spatial enhancement. SFD includes built-in low pass and high pass filters for each channel separately, allowing precise frequency shaping and the removal of unwanted audio content without the need for additional EQ plugins in the mix. This channel-specific filtering ensures that adjustments on one side do not affect the other, maintaining the integrity of the stereo image.

SFD operates as a 32-bit VST plugin compatible with all Windows VST-supported digital audio workstations, running on Windows XP SP3 through Windows 10. It requires a minimum of 1GB RAM with 2GB recommended and supports both Intel and AMD processors. The plugin utilizes ASIO drivers for low-latency performance, making it suitable for professional and home studio environments seeking creative delay effects with detailed stereo control.