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Product Description
The Grado S550 Signature Headphones utilise a balanced 4-pin mini-XLR cable interface coupled with open-back dynamic architecture engineered for critical listening and audio analysis. Matched 50 mm S2 drivers sit within solid Brazilian walnut housings to deliver an authentic, wide-bandwidth frequency response ranging from 6 Hz to 44 kHz. Handcrafted in Brooklyn, this design merges precise driver calibration with an open-air topology that reproduces natural acoustic depth without pressure build-up.
The Hi-Fi Centre Team Take
The S550 Signature delivers an expansive acoustic environment that makes extended sessions feel completely effortless in a dedicated home setting. The dense Brazilian walnut chambers add an organic warmth to acoustic instruments while preserving pinpoint positional separation across the soundstage. With the breathable B cushions and balanced weight distribution across the headband, the physical presence of the chassis recedes during continuous listening. It serves as a focused reference instrument for domestic spaces where transparency and natural timbre take precedence.
Key Features
- Brazilian Walnut Chambers: Dense hardwood construction controls internal resonance to deliver rich low-frequency definition and natural midrange clarity.
- Matched S2 Drivers: Precision 50 mm dynamic transducers calibrated within 0.05 dB ensure an accurate, three-dimensional stereo image.
- Balanced Mini-XLR Interface: Detachable silver cabling terminates securely via 4-pin connections for clean signal transfer and modular cable changes.
- Authorized Dealer Guarantee: Hi-Fi Centre is an Authorized Dealer, ensuring authentic product origin, comprehensive manufacturer warranty protection, and dedicated support.
Technical Specifications
- Transducer Type: Dynamic
- Operating Principle: Open air
- Driver Size: 50 mm (matched within 0.05 dB)
- Frequency Response: 6 Hz – 44,000 Hz
- Nominal Impedance: 38 ohms
- Sensitivity (SPL 1 mW): 112 dB
- Total Harmonic Distortion (THD): <0.2% @ 100 dB
- Termination: 4-pin mini-XLR to 3.5 mm stereo jack (with 6.3 mm adapter)
- Ear Cushion Type: Grado B Cushions
- Chassis Weight: 335 g
Shipping
All orders are processed within 48 hours from date of order.
We offer Free Ground Shipping on all orders regardless of size.
- If you would like to receive your order quicker you can request Express shipping during Check-Out in the Comments section. Additional charges will apply.
- In-stock items are shipped from our Vancouver warehouse and will reach major Canadian cities in 5-7 business days.
- Items not in stock will either ship from one of our manufacturer partners' warehouses or in rare cases first must be sent to Vancouver and then to you.

