It's been said that since Stax are largely capacitative devices, low cable capacitance is the most important parameter by far (more so than conductivity). That's why Stax makes the cables flat. And that's why traditional cable design "logic" doesn't fully apply here.
I think the vast majority of experienced Stax lovers are going to tell you that recabling is a bad idea.
And yes, the 009 can sound anywhere from mildly to annoyingly bright out of many drivers...including the BHSE. A KGST or (much better yet) a KGSShv Carbon is a better tonal match for the 009 and the new L700. The BHSE is a great tonal match for the 007. Amps make a HUGE difference in the quality of sound rendered by your 009. Much more so than with dynamic headphones. Much more so than even most speakers.
If you truly believe the silver coated wire is top blame for the brightness (I believe that it's 99% the transducer + amp), then maybe try one of the Stax all-copper extension cables and see what that does to the sound.
I think the vast majority of experienced Stax lovers are going to tell you that recabling is a bad idea.
And yes, the 009 can sound anywhere from mildly to annoyingly bright out of many drivers...including the BHSE. A KGST or (much better yet) a KGSShv Carbon is a better tonal match for the 009 and the new L700. The BHSE is a great tonal match for the 007. Amps make a HUGE difference in the quality of sound rendered by your 009. Much more so than with dynamic headphones. Much more so than even most speakers.
If you truly believe the silver coated wire is top blame for the brightness (I believe that it's 99% the transducer + amp), then maybe try one of the Stax all-copper extension cables and see what that does to the sound.