Bundle Pack! Upgrade Cable for SENNHEISER Headphones HD650 HD600 HD580 HD535 HD545 HD565 HD265 + Sennheiser Adapter Cable 1/8" 3.5mm Genuine Replacement cable for Sennheiser HD650 and HD-series. Manufactured by Sennheiser. Genuine SENNHEISER Mini-Cable Adapter Female 1/4" (6.3mm) to Male 1/8" (3.5mm) plug. (The adapter is un-marked but made by Sennheiser) Total length including adapters: 9" (230mm). The adapter is designed with high quality components and gold-plated plugs for no degradation of the audio signal The cable is a "beefier" version compare to the stock Sennheiser cabl. Reported benefits are improved sound and better durability. Note! The connectors attached to the ear speakers are of different sizes and not color coded, but marked L for "Left" and R for "Right".