Bass (8.25/10): Let’s get this out of the way to begin with. As far as I’m concerned, the Geminis will never be true “Endgame” status given their poor subbass extension for a flagship product, which for example, digs slightly less deep than even their 3-driver model, the QDC Anole V3. It’s an area that’s lacking for sure, and it stands out particularly on tracks that call for gobs of subbass, such as Lorde’s “Royals”. There’s decent detail, but it just doesn’t dive deep enough to rumble.

Thankfully, that’s really the only Achilles heel of the Geminis. Midbass is bumped up in terms of emphasis, well textured with great detail. Not quite the slam of a DD, but basslines still sound very convincing, and it’s all accompanied with an amazing sense of speed and tightness, handling midbass heavy tracks like Muse’s “Neutron Star Collision” excellently. Decay on the Gemini lingers just short of a natural DD. They don’t quite have the “oomph” of the JH Roxannes, instead opting for a cleaner, snappier presentation.

Mids (10/10): There it is, the first perfect “10” this site will witness. Even given my many years in the hobby, my answer to the question “Which IEM has the best midrange?” will without any doubt or hesitation be the “QDC Gemini. The tonal balance and timbre of the midrange is simply incredible, and not to mention the sheer resolution and clarity it oozes, probably the industry best at the moment for sound signatures which don’t have sharp upper midrange/lower treble boosts to bump up perceived clarity (like the Z1R).

I’m quite picky about the midrange, and prefer a balanced presentation more often than not, rather than one which emphasizes only male/female vocals, like the Hyla CE-5 does for the latter. Not the Geminis, though, all vocals sound absolutely spectacular on them, from Frank Sinatra’s to Adele’s, though female vocals just edge out the male ones in terms of emphasis by just a hair. Male vocals are always textured and weighty, while female vocals always sound sweet, clear and enthralling.

Note weight is perfect, with just the right amount to ensure a musical yet surgical presentation. The Geminis also lean towards my personal preference of a mellower presentation contrary to an aggressive, in-your-face presentation, which keeps the listening fatigue to a minimum. Everything just sounds so natural, detailed and clean, that often I find myself lost in the Gemini’s euphoric and emotional midrange. Bravo!