Downloading Waves MaxxAudio Pro for Dell to use offline is tricky because modern versions are typically tied to the Microsoft Store. However, you can secure an offline installer by downloading the Dell Update Package (DUP) directly from the Dell Support site Deep Write-Up: Offline Installation Strategy
The MaxxAudio software cannot run without the matching Realtek drivers. For an offline setup, you should download the full executable driver package rather than relying on Windows Update. Dell Drivers & Downloads , enter your Service Tag, and look for the Realtek High Definition Audio Driver waves maxxaudio pro for dell download offline