In this first look, I unbox and do a quick hands-on with the SIMGOT SuperMix 4, then jump straight into what matters: how it actually sounds, how it stacks up against a couple of known references, and what my measurements show. Build-wise it’s a pretty typical modern IEM shell with a flat 2‑pin connector and a nozzle that doesn’t have a very distinct lip, so tip fit can be a thing. The included cable is a basic silver-coated copper single-ended cable—fine for the price, but I do wish there was a balanced option at around $150. Sound-wise, my first impression is that the bass is surprisingly “not a lot” compared to many modern IEMs—there’s bass there, but it’s not super deep, rumbly, or slammy, and it sits in that “average amount / average response” zone. The mids lean a bit forward in the upper mids/presence area, giving vocals more presence without getting shouty, though I do hear a slight lack of body that can make some female vocals feel thin. Treble is controlled with good detail, but not overly sparkly and not very sibilant, and the stage comes across medium-to-small and a bit narrow. For comparisons, I found the SuperMix 4 surprisingly close to the Moondrop Variations in overall technicalities and general quality, mainly differing in that the SuperMix 4’s mids are a touch more forward while Variations feels a bit more laid back. Against the U4s, the U4s is better in multiple ways—but it’s also about six times the price. Overall, for roughly $150, the SuperMix 4 feels like a strong entry-to-midrange value, and my measurements also showed a small left/right imbalance (around ~1 dB) that shouldn’t meaningfully affect listening.