I received my tour TWS600s yesterday. They appeared to be new from HiFiMan, so I don't know if these are truly new as they appear or have been refurb'd. I will assume new. My intial impressions :
Pros:
- Great case, battery, USB C charging.
- Easy pairing
- No dropouts
- Great fit for me
- Great build and feel of the earphones themselves
- Best button tactile response I've had with TW phones
Cons:
- Unfortunately, the big one -- When I first tried these on they sounded like cardboard -- lots of mids, no bass or highs. Not wanting to use the included tips if I didn't need to, I used a set of silicone tips that I knew fit with other TW earphones. OK, they can't possibly be this bad, so I found a good fit with one of the included tips. I'm getting bass, but the mids are exaggerated and the highs are severely rolled off. Sounds very veiled.
I'm going to give them the benefit of the doubt, and assume they're new and need some burn-in. After they were playing unattended for an hour or so, I put them back in and I've been listening for an hour or so. They're starting to sound better (tolerable, anyway!), so I'm attributing this to brain/physical burn-in.
I'll give them a good workout and check back in later.