About
Free real-time FFT spectrum analyser plugin for mixing and mastering.
SPAN is a free spectrum analyser plugin that runs inside a DAW. It shows a real-time FFT spectrum with adjustable block size, overlap and smoothing, and can analyse stereo, mono, mid/side and surround channels.
Beyond the spectrum it includes loudness and level metering (EBU R128 and K-system), true peak detection, clipping indicators and a correlation meter. A separate paid product, SPAN Plus, adds further features.
Features & Use Cases
- Real-time FFT spectrum with adjustable resolution
- Mid/side and surround analysis
- EBU R128 and K-system metering
- Correlation meter and true peak detection
- VST, VST3, AU and AAX formats
Pricing
Free. SPAN Plus is a separate paid product.
View current pricingSources
Pricing checked 3 October 2026. Preview from voxengo.com, retrieved 3 October 2026.