Grado Signature S550 Headphone (B-Stock, Factory Refurbished) 4.4mm male TI audio operational amplifiers from

TI audio operational amplifiers from US

most custom IEMs provide approx

5 mm (shared with PO) BAL LO 4

EU - 24 month* NET WEIGHT 7

Grado Signature S550 Headphone (B-Stock, Factory Refurbished) 4.4mm male TI audio operational amplifiers fromThe 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