tldr; Upgraded HD 600 series. Intimate mids, detailed highs. Smaller soundstage than 800S but fantastic timbre. Add G6 DAC for full potential.
$434.85 on AmazonScores based on sentiment analysis of topic-related comments
Best praise vs top criticism for Sennheiser HD 660 S
“I don't really use mine for music, but would have kept my HD660S if i had. A/B testing PC38X/H6pro I find the PC38X to be a bit flat/neutral in comparison, 'best' is subjective and might be in your case. But preference aside the H6pro is definitely the more fun sounding of the two when it comes to gunshots and explosions/immersion etc, and directional audio/soundstage is just as good, so much so I'm contemplating selling the PC38X as the inferior headset..”
“Skip the hd660 not worth it. Also never buy a crappy blue yeti. Check out podcastage for mic reviews on YouTube. But in a budget get a q2u. Hd660 sucks for fps.”
50 Reddit opinions analyzed • Last updated 4/5/2026