It's good to read detailed impressions of the BA4.
Except that the resulting temptation to give in and just buy a BA4f makes waiting for the next Cosmic hybrid that much harder.
It's a long shot, but are any owners of the BA4 thinking of getting the HY3? ( or vice-versa ).
I'd love to read a direct comparison.
My HY-TF10, and the HY3 that I had really give me hope for the HY5 being great though.
In the absence of genuine factual info I'd like so speculate wildly:
I wonder what kind of new driver you're waiting for Phil, conventional dynamic?, or micro-drive?.
I ask as I've got a Sony MH1-C that uses a micro dynamic driver, and for the £17 I paid for it it is staggeringly good.
I wonder if any manufacturers have combined micro-drive dynamic drivers with BA's?
They'd presumably take up less room than a conventional D-D?
Do you have any timescale established for either the BA6 or the HY5 yet?
With the HY3 you get big bass at the expense of upper mids and treble. Phil did say that the HY3 treble is a bit worse than the BA2 treble, while the mids are very similar. I don't know if he means quantity or quality, or both. I find the HY3 mids and treble to be of amazing quality, they're just lacking quantity so they need a bit of EQ to sound good. The BA4, on the other hand, is much more neutral from what everyone has been saying, so it needs no EQ.
I'm curious about the HY5 and the BA6. If they can get reference quality with only 4 drivers, the 6 driver model must be pretty amazing to say the least.