Binary 3.5mm

The Binary 3.5mm packs a novel direct-drive MEMS driver into a six-driver hybrid IEM, but the sound quality is mediocre at the 29th percentile. Comfort and mic performance are also weak spots. Unless you're a tech enthusiast who absolutely must try MEMS drivers, skip this one and grab a better-sounding wired IEM or a solid wireless option instead.

The driver setup is ambitious: a 10mm dynamic driver, a 6mm passive diaphragm, three balanced armatures, and one MEMS unit. On paper, that's a lot of hardware. But our database shows the sound quality sits at the 29th percentile, which is underwhelming for a six-driver hybrid. The high-frequency extension up to 40kHz sounds nice in marketing copy, but real-world performance doesn't back it up. Battery is irrelevant here since it's wired, but the 45th percentile ranking is still odd for a passive product. Connectivity is a weak spot at the 13th percentile, which makes sense given the 3.5mm-only termination and no wireless option. The mic is even worse at the 12th percentile, so don't plan on taking calls with these.

Stacked against the competition, the Binary 3.5mm struggles. The Technics EAH-AZ100 and Sony WF-1000XM6 are wireless with active noise cancellation and far better overall scores. Even the budget-friendly Soundcore P31i and EarFun Air Pro 4+ offer more practical features like ANC and decent mics. The Binary's only real differentiator is the MEMS driver and wired connection, which appeals to a niche crowd. But for most people, the wireless options from Technics or Sony are simply better products.

Pricing is all over the map depending on where you buy. In Europe it runs around 333 to 347 EUR, while UK buyers pay 284 GBP and Canadians shell out 465 CAD. For that money, you're getting a wired IEM with mediocre sound scores and poor mic performance. The tech is interesting, but interesting doesn't equal good value. You can find better-sounding wired IEMs for less, and the comfort issues make it hard to justify the premium price tag.

The Binary 3.5mm is a weird one. It's a wired IEM pitching itself as a studio-grade hybrid with a direct-drive MEMS driver, which is genuinely interesting tech. But the scores tell a different story. Sound lands at the 29th percentile, which is mediocre for this category, and comfort isn't much better at 28th. For a product aimed at audiophiles and producers, that's a rough starting point.

Skip this if you need a reliable all-rounder. The mic is terrible, comfort is below average, and the sound quality doesn't justify the price. If you take calls, commute in noisy environments, or just want something that sounds great out of the box, the Technics EAH-AZ100 or Sony WF-1000XM6 are far better choices. Also skip it if you don't have a 3.5mm jack or don't want to deal with dongles.

This is a niche product for a niche buyer. If you're a tinkerer who wants to try direct-drive MEMS tech and already owns a good DAC or amp, the Binary 3.5mm might scratch that itch. But for anyone looking for a reliable daily driver IEM, the mediocre sound, poor comfort, and terrible mic make it a tough sell. The tech is cool, but the execution falls short.