Kiwi Ears Cadenza II: Refined dynamics, smarter tuning, and a more mature voice

The Cadenza II is Kiwi Ears doing what they do best: taking a simple idea—a single dynamic driver—and refining it until it feels considered, musical, and easy to live with. No wild hybrid configs, no tuning gimmicks. Just a clean, modern in-ear designed to sound good from pretty much anything you plug it into, whether that’s a phone with a dongle, a portable DAP, or a desktop DAC.

At the center of the Cadenza II is a 10 mm titanium-coated dynamic driver, paired with Kiwi Ears’ updated KARS 2.0 acoustic system. Instead of relying on brute-force bass boosts, KARS 2.0 shapes the low end inside the shell itself, giving the Cadenza II a sub-bass-focused foundation that feels deep and physical—but never sloppy.

The design utilizes a modified version of the second-generation Kiwi Acoustic Resonance System.

Sound: balanced, smooth, and easy to enjoy

The tuning here is smart. Sub-bass has real presence and weight, but it’s carefully reined in before it bleeds into the mids. There’s a gentle roll-off toward the upper bass, which keeps things clean and avoids that thick, boomy character that plagues a lot of budget IEMs.

The lower midrange is slightly filled in around the 300–400 Hz region, giving instruments and vocals a bit of density and warmth without turning them muddy or colored. Vocals sit naturally in the mix—neither pushed forward nor buried—and remain stable even as volume goes up.

Treble is handled with restraint. There’s enough sparkle and air to bring out detail, but no artificial edge or “look at me” brightness. It’s the kind of tuning you can listen to for hours without fatigue, which honestly matters more than impressing you in the first 30 seconds.

The titanium-coated PET diaphragm plays a big role here. The titanium adds stiffness and control, while the PET base keeps things lively and dynamic. The result is a driver that feels responsive and coherent, especially through the mids and upper frequencies, where cheaper dynamics often fall apart.

The housings are made of composite polycarbonate with a matte finish. The front panels are CNC-machined aluminum and feature a laser-engraved honeycomb pattern. The design is designed for long-term wear and a secure fit without excessive pressure.

Design and comfort

Visually, the Cadenza II keeps things clean and tasteful. The shells are made from lightweight composite polycarbonate with a smooth matte finish, and the aluminum faceplates feature a subtle laser-engraved honeycomb pattern. It looks premium without screaming for attention.

Comfort is excellent. The shape is friendly, the weight is low, and the fit feels secure without pressure points—ideal for long listening sessions, commuting, or desk use.

Cable and practicality

Kiwi Ears sticks with 0.78 mm 2-pin connectors, which is always a win. The included cable is made from single-crystal oxygen-free copper and feels solid and flexible, not stiff or plasticky. It’s not a fashion statement, but it’s reliable—and easy to replace or upgrade if you want to.

The dynamic driver is based on a titanium-coated PET diaphragm.

Quick specs, for those who care

• 10 mm dynamic driver with titanium coating (KARS 2.0)

• 18 ohms / 106 dB sensitivity

• 10 Hz – 29 kHz frequency response

• <1% THD

• 0.78 mm 2-pin detachable cable

• 1.2 m monocrystalline copper cable

The Kiwi Ears Cadenza II isn’t trying to wow you with exaggerated bass or artificial clarity. Instead, it delivers a smooth, balanced, and genuinely musical sound that works across genres and sources. It’s the kind of IEM you stop thinking about and just keep listening to—and that’s usually the best compliment you can give.

If you’re after a single-dynamic IEM that feels mature, easygoing, and well-tuned rather than hyped, the Cadenza II absolutely deserves your attention.