I've still got the 590 model that I've owned for over 30 years.
Someone said they used the same drivers as the (original) 600.
I'm not sure about that, but they don't sound bad.
The earpads are the softest I've known on any make / model. Together with my DIY headband padding and featherweight clamp force - can't imagine a more comfortable headphone.
If I could combine their comfort with the (more neutral) sound of the 560S, I'd have my perfect headphone:
View attachment 4178
Gray,
You got an enormous value their 30 years is truly amazing for headphones. Which is why I went back to Sennheiser as parts are so widely available. As comfortable as the stock pads are, I'm intrigued to try the Dekoni pads at some point for a small experiment. ⬇️
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Your first destination for Sennheiser earphone pads and other top brands and products that are comfortable and high-quality is Dekoni Audio.
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Also the HD650 headband is extremely comfortable. I thought it was a good choice for the latest HD600 - Gray if you wanted to test it for your 590 or 560s the replacement headband is on Amazon. You're 560s is highly regarded by the YouTube community. I have been reading and watching all the reviews for the past month. Another headphone of outstanding value by Sennheiser. 👏