LectroFan EVO

Pros

• +Broadest frequency range in the lineup (100Hz-5000Hz) for office-speech masking
• +20 sounds including 10 fan variations and 10 white/pink/brown noise types
• +No-loop guarantee — sounds are generated, not recorded
• +USB power keeps desk cable management clean
• +Precise 10-level volume control

Cons

• −Digital audio — the Dohm's mechanical sound character is different in ways some users strongly prefer
• −Slightly more complex operation than the Dohm's two-speed simplicity
• −No battery power for travel or hot-desk use
• −Higher price than the Dohm for non-mechanical audio