GRADO / Signature S750

＜＜december 2025 New Product！＞＞The Signature S750 is the third model in the Signature Line. It is a high-quality headphone model that inherits the technology and craftsmanship cultivated in the higher-end models, while revising its design concept from the ground up, achieving significant improvements in acoustic performance, comfort, and durability.

■ Improved Acoustic Performance with the Newly Developed "S2 50mm Driver"
・The S2 50mm driver, the heart of the Signature S750, is a completely redesigned unit, from the diaphragm to the magnetic circuit. The composite diaphragm, made from a combination of carbon fiber and paper, combines high rigidity and light weight, suppressing unwanted resonance while delivering a natural sound with excellent response. Combined with the copper-plated aluminum voice coil, it delivers a detailed, three-dimensional acoustic expression, from the depiction of subtle sound textures to a rich dynamic range.

■ New Comfort and Sound Field Created by the Newly Designed "B Cushion"
・The S750 is the first Grado earphone to feature the newly developed B Cushion, completely redesigning the fit and acoustic balance. The reduced driver-to-ear distance improves mid-range clarity and accurate positioning. Internal ventilation slits optimize airflow, maintaining the wide sound field characteristic of Grado earphones while delivering a natural sound without sacrificing detail. The flat surface evenly distributes pressure, ensuring comfort and reducing fatigue even during extended use.

■ Improved detachable cable system
・The Signature Gold cable features a new design that combines flexibility and durability, improving ease of use. The headphone end features a 4-pin mini XLR connector with a secure locking mechanism and expandability for future cable upgrades. In addition to 6.3mm connections, 4-pin XLR balanced and 4.4mm balanced connections are available, providing a wide range of options to suit your listening environment.

■ High-rigidity, lightweight design with machined aluminum housing
・The S750 features a housing precisely machined from aluminum for superior rigidity and durability. Hand-assembled in our Brooklyn workshop, this housing suppresses unwanted resonance and maximizes the performance of the S2 driver. Weighing just 460g, it's more than 10% lighter than the higher-end HP100SE model, and boasts a well-balanced construction ideal for extended use.

■Headband mechanism designed for comfort and durability
- While maintaining the same design as the previous Signature Series headband, the amount of internal padding has been increased by 50% compared to previous models, significantly reducing strain on the wearer. The gimbal is made of aluminum alloy, the slide rod is made of stainless steel, and the joints are made of reinforced aluminum blocks, providing flexible adjustment and durability for long-term use. The housing's rotation angle is controlled to 105 degrees, optimizing the balance between wear prevention and ease of use.

■Handbuilt in a Brooklyn workshop
- Since its founding in 1953, Grado Labs has continued to hand-assemble headphones in the same workshop in Brooklyn. The Signature S750 is also a product that combines craftsmanship and quality, with skilled craftsmen carefully completing each step, from design to final adjustment.

Specifications
■Model Name: Signature S750
■Driver Configuration: 50mm S2 Dynamic Driver
■Type: Open-Air
■Frequency Response: 6-46kHz
■Sensitivity: 115dB
■Total Harmonic Distortion: <0.2% @100dB
■Impedance: 38Ω
■Channel Balance: 0.5dB
■Weight (including cable): Approx. 580g
■Weight (excluding cable): Approx. 460g
■Cable Length: Approx. 1.85m
■Cable: Super-Annealed 12-Core OFC Cable
■Input Connector: 6.3mm / 4-Pin XLR / 4.4mm
■Housing Connector: 4-Pin Mini XLR
■Accessories
・Headphone Cable
・Ear Pad B
・4-Pin XLR to 6.3mm Adapter (4-Pin XLR Model Only)