A Focal Clear The Clears are dynamic, circumaural, open-backed headphones built on a solid aluminum yoke with a soft leather headband. They use the same 40mm aluminum-magnesium domes and transformerless voice-coils as the 33%-less-expensive Focal Elears, yet here those coils are pure copper rather than copper-clad aluminum; their impedance is 55 ohms, their sensitivity 104dB—clearly drivable ..