Grado SR225x Prestige Series HeadphonesFor the Love of Fidelity Just before we get into metal and wood, the SR225x produces a fine tonal spread and balance to your music. A Unique Voice The SR225x and SR125x have had a sibling rivalry for decades. Being the mature one, the SR225x utilizes the new F cushion to open up the sound to more textured tones. The driver works in unison to produce a unique voicing and be just as fast as the SR125x. Just dont tell their kid brother. Signature Sound