BEN/SCHULZ tells us that Spectrum is a VST, AU and AAX plugin that allows you to inspect the frequency content of your mixes. A spokesperson told us, "It's ideal to find clashing frequencies and to cleanup your mix. It supports input from multiple channels: just drop an instance into your master bus and route the audio of the tracks you want to inspect into Spectrum."

The free trial version runs for 30 days and has no restrictions. After that you need to 'purchase' the free base version. The base version supports up to two stereo pairs (four channels). More channels are available via an upgrade. In the all channel unlocked version a single plug-in instance supports up to 16 channels (eight stereo pairs). However this number might be less if your DAW does not support this number of channels.

Specifications / Features

• Hardware accelerated graphics
• low CPU usage
• Spectrogram & Spectrograph display modes
• variable block size: 2k-16k
• variable refresh rate: 40ms - 200ms
• Spectral Smoothing: zero to eight seven
• display spectrum as bins or lines
• manual & auto-ranging
• visualization of Left/Right or Mid/Side channels
• flexible channel selection
• Display Frequencies in Hz and as musical Note
• Supported Plugin Formats: VST2, VST3, AU (Audio Unit), AAX (Pro Tools)
• Supported Operating Systems: macOS, Windows
• Word-Width Support: 32 bit, 64 bit

Pricing and Availability:
4 channels: Free
16 channels: £20

More information:

• Spectrum