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Low carbon steel front baffle with integrated resonance control
5-pin Pro Bias
5mm single-ended and 4
and immersive experience that awakens the senses of the listener
It complies with Bluetooth 3
Grado Signature S550 Headphone (Open Box) phono stage Low carbon steel front baffleThe 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