OK some early pithy observations
Been listening to this quite a lot over the last couple of days. the difference in quality was immediately noticeable - more detail , sweeter treble with a longer decay and also more and deeper bass. The last is good as 1 slight niggle I had was that the previous iteration of the DCB1 did not do bass lower down the register too well. If anything it sounded (very, very slightly) lean. However this is obviously due to the budget attenuator that was previously fitted, as it is there now
which is great seeing as I listen to a lot of rock and reggae.
The sound has "rounded off" slightly after a bit of use but with no loss of detail and the decay on the higher notes is longer than it was before fitting. I would say that overall (so far) it has introduced an element of clarity but without losing any musicality which is really nice.
Especially as the DCB1 was not lacking in clarity before, it makes me wonder how far you can take this thing without mucking about with the current available to it again (which I won't be doing, happy at 700-800 ma or so).
It's also a pleasure to use as the action is smoother and also it has 41 steps rather than the 23 the other switch had. At £140 odd it's not cheap, was it worth it from my POV - absolutely!!
Its showing some real drive and dynamics as well, again no that it was lacking before.
I'll add some more thoughts later down the line when played in a bit but all good so far.