Grado Signature S550 Open-Back Headphones

The most approachable entry into Grado’s Signature Line, the S550 pairs a 50mm S2 dynamic driver with a hand-crafted Brazilian Walnut housing and detachable Signature Silver cable via 4-pin mini XLR — delivering clarity, balance, and musical engagement for extended listening.

Specifications

• Transducer Type: Dynamic
• Operating Principle: Open Air
• Frequency Response: 6 Hz – 44 kHz
• Total Harmonic Distortion (THD): < 0.2% at 100 dB
• Sound Pressure Level (SPL): 112 dB (1 mW)
• Nominal Impedance: 38 ohms
• Driver Diameter: 50 mm
• Driver Matching Tolerance: 0.05 dB
• Weight: 335 g
• Cable: Signature Silver detachable cable
• Headphone Connector: 4-pin balanced mini XLR
• Source Connector: 3.5 mm with 6.3 mm adapter
• Ear Cushions: B Cushions

Grado Canada product details