Hi guys, been contemplating on a set of Focal Elears to upgrade from my Sennheiser HD600. My rig is based on an SPL Auditor headphone amp, the output impedance of which
is rated at 9Ω. Following the 'rule of eights' (see e.g.
here) this should put the Elear quite ideally into the optimum range for impedance matching, shouldn't it? Reason I'm asking is that I used to consider the SPL as a design that favors high-impedance headphones (my HD600 really sing on the SPL), but I wouldn't want to end up with a bassy Elear on my hands since it already looks prone to rendering things on the dark side.
Btw, impedance matching is also what's keeping me away from planars (but I wish it didn't)...
Any informed opinions/advice would be well appreciated, thanks!
Edit:
this guy puts the Elear at 115Ω instead of the
official 80Ω. On the other hand, I'm reading
Tyll's measurements that put the chances of the dreaded bass bloat with hp amps with output impedances grater than 20Ω. Looks like the Focal
is indeed a good match to the SPL, isn't it?