Lets be honest – spectrum analyzers aren’t as excting as some of the other plugins in your vst folder, but they are arguably way more important and interesting when it comes to track referencing, finding problematic frequencies amongst other cool applications.

Let’s take analyze some absolutely free ones, use this as your reference guide!

SPAN

SPAN is a free – real-time FFT frequency spectrum analyser for pro audio and music production. Supporting stereo, mono, mid-side, 7.1 & 5.1 surround sound, with a stereo correlation meter. This one is probably the most popular free spectrum analyzer plugin on our list.

MAnalyzer

MAnalyzer is a powerful spectral analyzer and sonogram with features like smoothing, normalization, super-resolution, prefiltering, and deharmonization.

FreqAnalyst

Designed for exceptional smoothness and high resolution in both time and frequency. Unlike most spectrum analyzers, Blue Cat’s FreqAnalyst uses smooth interpolation algorithms to show continuous variations even at high frequency resolution. You have full control over the audio-to-frequency display, with a special thresholding system that highlights key parts of the spectrum. You can also zoom in for extra precision in specific frequency ranges. Plus, it supports Blue Cat’s skinning language, allowing you to customize the user interface to your liking.

SpectrumAnalyzer

SpectrumAnalyzer is a cutting-edge spectrum analyzer plugin that provides various options for visualizing the spectral content of your audio, helping you create a better mix. Available in both free and full versions, it features a mode based on bandpass filters, not just FFT like many other analyzers, giving you a clearer view of your mix’s frequency balance.

---

Remember – RouteNote Create subscriptions start from as little as $2.99. You also get 10 FREE credits to spend on samples along with access to our FREE sample pack bundle when you sign-up!