I
love the Volür. For my preferences, with the M15, the Volürs bass is phenomenal -- textured, physical, among my favorites there.
I've been playing around with eartips, and started with an old standby -- AZLA SednaEarfit (size MS). I've enjoyed the Volür very much with these, so I left them on for a while.
Recently, though, I was swapping around more, and kept coming back to the Final Type E (size M) -- another old standby eartip at the Head-Fi office. For me, there was something more
put-together with the Final eartips -- a clear preference of the few different types of eartips I'd tried with the Volür. So I decided to measure. Here's the frequency response with the SednaEarFit tips (below):
(That (above) was measured using HEAD acoustics' labCORE / ACQUA, with the Benchmark HPA4 as amp, with the Brüel & Kjær Type 5128 measurement manikin.)
This was the measurement with the Final eartips (below):
(That (above) was measured using the Audio Precision APx555, with the Benchmark HPA4 as amp, with the Brüel & Kjær Type 5128 measurement manikin.)
These are using two different systems, only because I hadn't yet specifically measured the Volür with the Final eartips yet on the HEAD acoustics setup. And even though these were done using two different systems, they were on the same manikin, so the results are comparable.
Caveat: These were only one seating, one pass each -- not averaged multi-seatings. That said, I feel reasonably confident we have a fair representation here of the Volür with these two types of eartips. If/when I do multiple seatings for these two types of eartips, I'll post them. I'm still going to try other eartips, too, but, for now, I'm going to enjoy the Final-Type-E'd Volür, which has been one of my reference IEMs since its release.
EDIT 2024-04-19 1301 EDT: Replaced the AP plot with 50 dB y-axis (instead of 60 dB).