Comfortable and Accurate Headphones for Superior Monitoring. Roland’s RH-200 Headphones deliver the power, comfort and accuracy needed for a variety of personal monitoring needs. With 40mm drivers, neodymium magnets and CCAW (copper-clad aluminum wire) voice coils, these professional headphones offer the clarity and sonic accuracy needed for mixing and silent practice. The RH-200 includes a gold-plated 1/8-inch stereo connector with 1/4-inch adapter, plus a high-quality cable with built-in strain relief.   – Professional stereo headphones with exceptional clarity and accuracy – Adjustable, lightweight design provides superior sound isolation and comfort – High-power capacity with 40mm drivers, neodymium magnets and CCAW voice coils – 180º rotating ear pieces for single-ear monitoring