Update.
Music listened to:
Joe Jackson: Body & Soul
Brian Bromberg: Downright Upright
Donald Fagen: Morph the Cat
Miles Davis: Water Babies
After a lot more listening and experimenting I have the following observations:
The =/= (neutral bass/neutral treble ports) combination is VERY enjoyable. It is surprisingly lively and dynamic. Especially compared to the +/+ combination. It is absolutely FUN, with big, but very well defined bass.
I found that in most other combinations I missed a bit of sparkle, briliance. (Less so in the =/= combination strange enough....) Especially missed with an instrument like the piano. So I measured (by ear) the frequency response and found out that the treble roll off sets in rather early and is pretty steep.
When I asked Jason about this he told me that they actually have a prototype of an extended treble port ready. I'll get those probably next week.
Can't wait.
In the mean while I found out that the Shure olives fit these perfectly and add another + to the already excellent bass. Also much better isolation and comfort than the biflanges of course... Good move to use this size for the treble ports.
These fare very well without the help of an amp. This is very important to me, because I want to use them straight out of my DAP when in the office.
more to come...