... the silvery area on the (in)side of a tube is normal when the 'getter holder' is to the side rather than towards the top of the tube.
Thanks for clarification. I am diving in right now.

... the silvery area on the (in)side of a tube is normal when the 'getter holder' is to the side rather than towards the top of the tube.
I have the Dahlia and the Bokeh Open, and I have to say the Bokeh Open is just the better headphone of the 2 (imo of course)Looking at his, HFA Dahlia, or even the DCA XO as a possible next choice...would love to know if anyone has any insights into relative strengths/ weaknesses. Cheers
Thanks a million for the very comprehensive insights; sounds like the BO is just up my avenue...which means I am on another "saving for a headphone/ justifying another headphone" round for a while! CheersI have the Dahlia and the Bokeh Open, and I have to say the Bokeh Open is just the better headphone of the 2 (imo of course)
The BO has faster transient response, punchier bass, and a smoother tonality overall. And its midrange is superb, it is a ridiculously good sonic value at its price point.
Both headphones can be a bit spicy in the treble initially, but I found the BO to smooth out to a greater extent than the Dahlia, which I find to be a bit aggressive in the treble even with burn in and some pad rolling.
In the case of each headphone I've rolled pads, settling on the Caldera Ultra perf lambskin for the BO, and still searching for the right pad for Dahlia. Its stock pads might be the best, but I've also tried Caldera hybrids and Caldera thin TSP on Dahlia, all with the goal of smoothing the top end and maybe giving a bit of bass boost. I haven't found quite the right combo, though I do rather like plain old Universe perf lamb pads on it. (!)
Don't get me wrong, I think the Dahlia is a good headphone, it's very comfortable, it does sound good, and it's the nicest of the DIY Peerless driver headphones. And with all the great feedback it has, I wanted to try it out. I just think the Bokeh Open sounds better in comparison to the Dahlia.
But the usual disclaimers apply, YMMV and all that as we all hear differently.
.... thank you !!@jonathan c I'm not sure I've seen anyone have a nicer collection of assorted amps and headphones. Extremely well done.