W124 Acceleraing Sound question

[sptt]

Do any of you hear a high pitched whine when you accelerate or punch the gas pedal on your W124? In my past car life, this would typically be a pulley bearing or something like the alternator going bad. I cannot tell with a stethascope and hear it better from inside the car. Is it the Torque Converter spinning? Were they like this new out of the box? It cruises nice and quiet but when I punch to pass, high pitched whine along with the engine powering up. Can't seem to pinpoint it. Hmmmm...