NOPE! Bass is NOT weak. Just realistic. Very similar to the much vaunted Yamaha HP-1's of the same vintage. These both were AKG killers in their day, and darn respectable now for Opera and Classical music. I own them both and STAX Lamda Pros as well as a few odd AKG pro. monitor phones. Anybody remember the Jacklin Floats (electrostatics)? Or the superb Sonnus over ear sets?