Sennheiser’s HD 600 and HD 650 sit in the brand’s long running audiophile line-up, competing with open back classics from Beyerdynamic and AKG for home listening. This listing is for refurbished units, so expect a previously owned or returned pair that has been checked over. Refurbished stock from the manufacturer is typically fully tested and cleaned, with any faulty parts replaced, and may show light cosmetic marks on the cups or headband.
Which should you choose, HD 600 or HD 650?
Both are open back, wired headphones aimed at detail and natural tone rather than big, thumping bass. The HD 600 is often picked for a more neutral, analytical presentation, useful for acoustic, classical and mixing. The HD 650 tends to sound a touch warmer and smoother, which can be kinder on brighter recordings and longer sessions. Being open back, they leak sound and do not block noise, so they suit a quiet room more than commuting.
- Open back fit: wider, airier soundstage, less isolation
- Home focused listening: best with a decent headphone amp or capable DAC
