Grado Labs, designer and manufacturer of award-winning headphones, announces the Signature S150, the most accessible entry into its expanding Signature Line.
Featuring a newly developed 44mm S driver incorporating technology from Grado’s higher end HP100 SE and S950 headphones, the S150 delivers exceptional clarity and detail while maintaining a full-bodied, musical presentation.
The S150 also introduces an entirely new single-piece housing design, modernizing the classic Grado appearance while retaining its unmistakable identity. Combined with detachable Signature Bronze cables, a comfortably padded leather headband, and refined mechanical components, the S150 offers a compelling combination of musical performance, comfort, and versatility.
New 44mm S Driver
At the heart of the Signature S150 is Grado’s 44mm S driver, marking the first use of this new driver design. The driver incorporates a paper-composite diaphragm based on the technology found in the larger 52mm S drivers utilized in the HP100 SE and S950.
Developed specifically for the smaller 44mm format, the new driver builds on Grado’s ongoing exploration of materials and magnetic design, and their influence on musical reproduction.
The S150 delivers a level of clarity and detail that challenges expectations for a headphone in its class, while preserving the natural body and musical character of the performance.
While open-back headphones are often associated with a more restrained low-frequency presentation, the S150 delivers clean, articulate bass with a satisfying sense of presence. This contributes to a balanced presentation across the frequency spectrum, allowing subtle musical details to emerge without sacrificing fullness or musical engagement.
As with every Grado headphone, the S150’s final acoustic presentation reflects a combination of engineering, extensive listening, and fine-tuning, with the goal of bringing listeners closer to their music.
Signature Bronze Detachable Cables
The Signature S150 features Grado’s detachable cable system, incorporating the new Signature Bronze cable as standard equipment.
Part of Grado’s latest generation of Signature Line cables, the Bronze cable features a lighter, softer, and more flexible construction, improving comfort and convenience during everyday listening.
The S150 features 3.5mm connections at each headphone housing, providing additional freedom to adjust cable orientation to suit individual listening preferences and comfort. The included cable terminates in a 3.5mm plug at the source end and is supplied with a 6.3mm adapter, ensuring compatibility with a wide range of portable audio players, headphone amplifiers, and home audio equipment.
The S150 can also be ordered with alternative cable terminations, allowing listeners to select the connection that best suits their audio equipment.
Comfort, Fit and Refined Engineering
Weighing just 220 grams, the Signature S150 combines lightweight construction, a padded leather headband, and updated mechanical components to provide a comfortable and secure fit for extended listening sessions.
The S150 incorporates Grado’s new Signature headband assembly, featuring a padded leather strap that distributes the headphone’s weight comfortably across the head. A flexible steel band within the headband allows listeners to adjust the inward tension, providing a more personalized fit and level of comfort.
The assembly includes redesigned matte-black polymer gimbals, stainless-steel height rods, and reinforced junction blocks, providing improved stability, adjustability, and durability. Controlled housing rotation limits unnecessary movement while maintaining the flexibility needed for a personalized fit.
The new Signature headband assembly is also available separately as an accessory, offering owners of compatible earlier Grado headphones a convenient way to incorporate the latest comfort and mechanical refinements.
The S150 is supplied with Grado’s F cushions, selected as part of the headphone’s overall acoustic tuning. Their design incorporates internal acoustic slits that promote airflow and contribute to the headphone’s open, detailed presentation.
The S150 is also compatible with the complete range of Grado headphone cushions, allowing listeners to explore different cushion options and personalize the headphone’s sonic presentation and comfort.
A Contemporary Interpretation of a Classic Design
The Signature S150 introduces an entirely new, single-piece acoustic chamber body, bringing a contemporary refinement to Grado’s iconic headphone design.
Moulded from engineered ABS polymer, the housing combines lightweight construction with durability and dimensional consistency. Its rich matte-black finish creates a refined, understated appearance while preserving the recognizable character of a Grado headphone.
The new housing design reflects Grado’s continued approach to product evolution, combining modern materials and manufacturing techniques with the distinctive appearance that has defined the brand for generations.
Continuing the Evolution of the Signature Line
The introduction of the Signature S150 represents the next step in Grado’s ongoing commitment to advancing headphone design and musical performance, making the latest Signature Line developments accessible at a new price point.
Combining the new 44mm S driver, paper-composite diaphragm technology, detachable Signature Bronze cables, updated headband engineering, and contemporary housing design, the S150 brings together meaningful developments in acoustic performance, listening comfort, and versatility. The result is a headphone designed to reproduce music with clarity, detail, and natural musical expression, continuing
Grado’s longstanding goal of bringing listeners closer to the music they love.
The Grado Signature S150 is available for pre-order at an MSRP of $295 and SRP of £295 USD, with shipping expected to begin in early November 2026.
Technical Specifications
Transducer Type: Dynamic
Operating Principle: Open Air
Frequency Response: 16Hz – 34kHz
THD: <0.3% @100 dB
SPL 1mW: 104 dB
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
To learn more about the Signature S150 and discover other Grado products, please visit www.gradolabs.com.
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