Windows

• Microsoft Windows 10 or 11
• 8GB RAM, 16GB recommended
• x86-64 quad core CPU, Intel Core i3, i5, i7, i9. Fourth generation or newer. Or AMD equivalent.
• 200MB disk space

macOS

• macOS Ventura 13.1 or later
• 8GB RAM, 16GB recommended
• Apple Silicon M1, M2 or Intel x86-64 quad core CPU, Intel Core i3, i5, i7, i9. Fourth generation or newer.
• 200MB disk space

Audio Hardware

The measurement application will play a frequency swept sine-wave through your loudspeakers and record the result with a measurement microphone. This requires a USB DAC or similar audio interface to be connected to your PC along with a suitable measurement microphone. Typically the DAC or other interface already used for music playback combined with a USB measurement microphone is all that is required.

Links to suitable measurement microphones can be found on the Resources page.

Playback Software

Focus Fidelity software generates filters saved as stereo *.wav files. Playback software is required to load these filters and perform the filtering.

Suitable applications include Accurate Sound's HLC, Roon, JRiver Media Center, and HQPlayer.