Room EQ Wizard

Pros

• Completely free to use for advanced room analysis
• Highly effective for identifying room modes and optimizing subwoofer placement
• Integrates seamlessly with MiniDSP hardware and various AVR manual EQ settings
• Provides professional-grade measurement data for fine-tuning DSP and crossovers
• Active community support with numerous tutorials and third-party optimization scripts

Cons

• Significant learning curve often described as a 'black hole' of time
• Initial software and hardware setup can be tedious and frustrating
• Requires the purchase of a separate calibrated microphone (like the UMIK-1) to be useful

Caveats

• The software is a measurement tool, not a 'one-click' fix; users must still manually apply the resulting EQ or physical room treatments
• Some advanced testing may exceed the capabilities of REW when used only with basic USB microphones

Best for

• Home theater enthusiasts wanting to optimize multiple subwoofers
• Audiophiles comfortable with manual DSP and EQ adjustments
• Users looking for a free alternative to paid calibration suites like Dirac Live

Avoid if

• You prefer a fully automated, plug-and-play room correction solution
• You are unwilling to spend time watching tutorials or learning acoustic measurement theory