I highly doubt it's a typo.
Ara spec:
93 dB SPL/mW Sensitivity
8.5 Ohms @ 1kHz Impedance.
Impedance is the other factor on ease of driving. 8.5 ohms is incredibly low for nominal impedance. I've got one lower IEM at 3 ohms in the house right now. The AME Custom Gravitas is harder to drive (current requirements).
Here's the Andromeda 2020 specs:
112.8 dB SPL/mW Sensitivity
12.8 Ohms @ 1kHz Impedance
50% more nominal impedance. I'd wager they take similar juice to drive.
Solaris 2020
115 dB SPL/mW Sensitivity
15.5 Ohms @ 1kHz Impedance
Even more nominal impedance. I really doubt these are much different to drive.
@Jackpot77 what volume you using on the Solaris 2020 with the Cayin N6ii A01? I'm doing in the 30s with the Ara for 78.2 dB measured with Ayre IBE white noise on both T01 and E02.