Grado Signature S150 Open-Back Wired Audiophile Stereo Headphones with Detachable Cable
The Grado Signature S150 Open-Air Wired Stereo Headphones bring Grado's latest Signature Line driver engineering to a lightweight 220-gram design hand-assembled in Brooklyn, New York. Featuring a newly developed 44mm S dynamic driver with a paper-composite diaphragm derived from the flagship HP100 SE and S950, the S150 delivers a wide 16Hz to 34kHz frequency response, 0.05 dB driver matching, and a full-bodied, musical presentation.
Designed for listeners seeking open-back audiophile clarity with modern convenience, the S150 pairs a single-piece matte-black engineered ABS polymer housing with an updated padded leather Signature headband, stainless-steel height rods, and acoustically tuned F cushions. With 38-ohm nominal impedance, 104 dB SPL sensitivity, and a detachable Signature Bronze cable terminating in 3.5mm with an included 6.3mm adapter, it drives effortlessly from portable players, laptops, and dedicated desktop headphone amplifiers.
Experience authentic Brooklyn-built open-air hi-fi performance with the Grado Signature S150, backed by authorized Canadian dealer support and full manufacturer warranty.
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Newly Developed 44mm Signature S Driver
At the heart of the Signature S150 is Grado's newly engineered 44mm S dynamic driver, utilizing a paper-composite diaphragm adapted from the larger 52mm S drivers in the flagship HP100 SE and S950 headphones. Matched to within 0.05 dB between left and right channels, the driver delivers exceptional clarity, clean articulate bass, and natural midrange presence from 16Hz to 34kHz.
Single-Piece Matte-Black Acoustic Housing
The S150 introduces a contemporary single-piece acoustic chamber molded from engineered ABS polymer in a refined matte-black finish. This rigid, lightweight open-air housing minimizes unwanted internal resonance while preserving the unmistakable Grado silhouette and airy, out-of-head soundstage.
Detachable Signature Bronze Cable System
Equipped with Grado's modular detachable cable architecture, the S150 includes the lighter, softer, and more flexible Signature Bronze cable. Dual 3.5mm mini connections attach cleanly to each earcup, while the source end terminates in a 3.5mm stereo plug accompanied by a 6.3mm adapter for seamless use across portable players, laptops, and desktop headphone amplifiers.
Updated Signature Headband and F-Cushion Tuning
Weighing just 220 grams, the Signature S150 features an updated padded leather headband with an internal flexible steel band to adjust inward clamping tension, paired with matte-black polymer gimbals, stainless-steel height rods, and reinforced junction blocks. Supplied with Grado's F cushions featuring internal acoustic slits for balanced airflow, the S150 also supports Grado's full range of replacement cushions for personalized comfort and sonic tuning.
Hand-Assembled in Brooklyn, New York
Continuing Grado Labs' heritage of Brooklyn craftsmanship since 1953, every Signature S150 is designed and hand-assembled in-house to ensure enduring acoustic consistency and build integrity.
Specifications
| Transducer Type | Dynamic |
| Operating Principle | Open Air |
| Frequency Response | 16Hz - 34kHz |
| THD | <0.3% @ 100dB |
| SPL 1mW | 104dB |
| Nominal Impedance | 38 ohms |
| Driver Size | 44mm |
| Driver Matching | 0.05 dB |
| Weight | 220g |
| Cable Type | Signature Bronze Detachable |
| Headphone Connection | Dual 3.5mm Mini |
| Source Connection | 3.5mm with 6.3mm Adapter |
| Earpad Supplied | F Cushion |
In The Box Contents
- Grado Signature S150 Open-Air Wired Stereo Headphones
- Detachable Signature Bronze 3.5mm Audio Cable (6-Foot)
- 6.3mm Stereo Adapter
- Grado F-Cushions (Pre-Installed)
- Product Story Sheet and Warranty Information
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Key Features
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