Grado Signature S550 Headphone (B-Stock, Factory Refurbished) OPEN-BOX A5000 (Not compatible with A8000

A5000 (Not compatible with A8000

Resistance: 16 Ohm

In order to refine this HF response

Open-Professional Parametric Equalizer

Ultimate individual fit

Grado Signature S550 Headphone (B-Stock, Factory Refurbished) OPEN-BOX A5000 (Not compatible with A8000The Grado Signature S550 brings the core values of the Signature Line into a more streamlined and approachable form. Designed for listeners who value musical engagement as much as technical performance, the S550 delivers clarity, balance, and energy in a headphone built for long, immersive listening sessions. At its heart, the S550 is tuned to preserve the immediacy and openness Grado is known for, while offering a refined presentation that remains