The Sennheiser HD 660 line on Speaker Ranking spans 2 generations and 2 models, from the Sennheiser HD 660 S to the Sennheiser HD 660S2. Ratings run from 3.4/5 to 3.8/5. Only one of them is still sold.
Each column below is a release year, oldest on the left. Each row follows one model into the model that replaced it; a long arrow spans the years between them. Ratings are out of 5, and an estimated rating comes from measured models in the same family.
More from this brand: every Sennheiser speaker ranked.
Generation by generation
HD 660 S to HD 660S2
The Sennheiser HD 660S2 replaced the Sennheiser HD 660 S. It rates higher, 3.8/5 against 3.4/5.
Frequently Asked Questions
How many generations of the Sennheiser HD 660 are there?
Speaker Ranking covers 2 generations of the Sennheiser HD 660, from the Sennheiser HD 660 S to the Sennheiser HD 660S2.
What replaced the Sennheiser HD 660 S?
The Sennheiser HD 660S2 replaced the Sennheiser HD 660 S. It is rated 3.8/5, against 3.4/5 for the Sennheiser HD 660 S.