Directstream Mk 2 observations

[dchang05]

P20 & P15 Regenerator Performance Tweaks and Digital Stream Enhancements, plus BHK Preamp

There are tons of pictures of interiors on P20, P3 and P10 and nothing on P15. P10 has display on the side like P15, but transformer is at the same location as P20. My guess is P15 has it at center too. The transformer sits near bottom so maybe putting absorber at bottom is just as effective. I think 3M AB7050 is replaced by AB5050. They are at the same thickness but 7050 is hard to find.

@vmax has a long discussions on this thread including 3M 7050 absorbent.