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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want a five-driver hybrid monitor with a metal faceplate, a detachable upgradeable cable and the widest frequency range of the two, choose erjigo KZ ZS10; if you need 7.1 spatial audio with switchable gaming and bass modes plus featherweight comfort for long sessions, choose CCA Falcon 2.
• erjigo KZ ZS10 biggest strength: a 4BA+1DD five-driver hybrid setup per side with a stated 7Hz–40,000Hz range, so it is built for layered, detail-heavy monitoring rather than a single full-range driver.
• erjigo KZ ZS10 biggest trade-off: it is the heavier, more complex option, and its 3.5mm cable is wired-only unless you add a Bluetooth module yourself.
• CCA Falcon 2 biggest strength: dual 7mm + 8mm dynamic drivers with DSP-driven 7.1 surround and four selectable sound modes on the Type-C version — a lot of flexibility for gaming and movie use.
• CCA Falcon 2 biggest trade-off: that 4-mode DSP feature is Type-C only; the 3.5mm version is plain analog audio, and the quoted frequency range tops out at 20,000Hz with no detachable cable.
• Pick erjigo KZ ZS10 if you want a metal-bodied, upgrade-friendly IEM for critical listening and general wired use.
• Pick CCA Falcon 2 if you want the lightest possible fit and mode-switching spatial audio for games, streams and long sessions.
The KZ ZS10 is the more ambitious design of these two. Each earpiece carries four balanced armatures — two 30095 units handling highs and two 50060 units covering the mids — alongside a 10mm dual-magnetic dynamic driver for the low end. That five-driver hybrid arrangement is the whole point of this model: instead of asking one driver to do everything, it splits the work, which is why the quoted frequency response stretches from 7Hz all the way to 40,000Hz at 111dB sensitivity and 24 ohms impedance. In practice, that combination of high sensitivity and low impedance means it does not demand much power to get loud, so a phone dongle or a basic player will drive it without strain.
The build is the other half of the story. The faceplate is 304 stainless steel with a sand-black finish over an imported resin cavity, and the whole earpiece weighs about 0.07 pounds. That is not a featherweight, but it buys you a sense of solidity that plastic shells rarely match. The cavity shape is derived from cochlea data, and the ergonomic fit is quoted as isolating external noise by up to 26dB — useful on a train, in a shared office, or anywhere you want the outside world turned down.
Where it earns its keep for most people is flexibility. The 0.75mm 2-pin connection is detachable, with a limit slot to protect the pins, so a worn or broken cable is a swap rather than a replacement purchase — and you can move to a Bluetooth module later if you want wireless. The inline one-button remote handles calls and track skipping, and there is a built-in microphone for meetings and game chat. Three sizes of tips (S, M, L) come in the box.
CCA Falcon 2: Who It's For
The CCA Falcon 2 takes a completely different route. Instead of stacking drivers, it uses two dynamic drivers per side — a 7mm and an 8mm — wired in physical series. That series connection is the interesting engineering choice here: it lets the two drivers behave as one coherent unit rather than two separate sources fighting each other, which is why CCA can talk about deep bass, natural vocals and clear treble from a purely dynamic setup. Quoted impedance is 25 ohms and the frequency range is 10Hz–20,000Hz.
The headline feature, though, is the DSP. On the Type-C version, the Falcon 2 decodes 7.1 spatial audio and lets you switch between four modes from the inline remote: Hi-Fi Music, Gaming, 7.1 Surround and Bass Boost. For anyone who splits time between competitive shooters, films and music, that is genuinely useful — you are not locked into one tuning. Be careful with this one detail, though: the 3.5mm version has none of it. If you buy the analog version, you get standard stereo audio and no mode switching, so the connector you pick decides which product you actually get.
Comfort is where it clearly wins on paper. Each earpiece is 7.8g, the shape is designed to sit naturally in the ear, and the vented metal acoustic chamber is there to reduce air pressure build-up. If you have ever pulled IEMs out after three hours with a headache from pressure, that venting detail matters more than any spec sheet number. The shell mixes metal with polycarbonate, the fit is aimed at isolation, and CCA positions the model for stage monitoring, studio tracking, choirs and DJ sets as well as gaming.
Buy it if you want spatial audio and switchable tuning, the lightest fit for marathon sessions, and you are happy to use a Type-C connection to unlock the full feature set. Skip it if you need a detachable cable, or if you want the wider quoted frequency range and multi-driver architecture.
• Best for driver count and separation → erjigo KZ ZS10. Five drivers per side (4BA+1DD) versus two dynamic drivers.
• Best for gaming and surround sound → CCA Falcon 2 (Type-C). 7.1 spatial decoding with a Gaming mode is something the KZ simply does not offer.
• Best for long, pressure-free sessions → CCA Falcon 2. 7.8g per earbud plus a vented chamber designed to relieve air pressure.
• Best for cable longevity and upgrades → erjigo KZ ZS10. The detachable 0.75mm 2-pin design with limit slot protection lets you replace or go Bluetooth.
• Best for build feel in the hand → erjigo KZ ZS10. 304 stainless steel faceplate over a resin cavity.
• Best for EQ flexibility → CCA Falcon 2 (Type-C). Four switchable modes versus a fixed analog tuning.
• Best for isolation on the move → a near tie, slight edge to erjigo KZ ZS10. It quotes up to 26dB of external noise isolation from its cochlea-derived fit.
• Best for stage and studio monitoring → either, depending on your chain. The KZ leans analytical with its armature mids and highs; the Falcon 2 leans musical with its dynamic pair.
In my opinion, the erjigo KZ ZS10 is the better buy for most people reading this comparison. The five-driver hybrid array, the metal build and the detachable 2-pin cable give you more hardware and more long-term flexibility, and the 7Hz–40,000Hz range plus 111dB sensitivity means it will run off almost anything you plug it into. I would only steer you to the CCA Falcon 2 if gaming surround and mode switching are your priority — and in that case, make sure you get the Type-C version, because the 3.5mm model drops the entire DSP feature set. Check the current price on Amazon before deciding, since the value math shifts with whatever each one costs the day you buy.
FAQ
For gaming specifically, yes — if you buy the Type-C version. It decodes 7.1 spatial audio and has a dedicated Gaming mode plus Bass Boost, which the KZ ZS10 does not offer. The KZ counters with better positional detail from its armature drivers, so it is not a blowout.
The CCA Falcon 2, on paper. At 7.8g per earbud with a vented metal chamber designed to reduce air pressure, it is built for marathon sessions. The KZ ZS10 is heavier at about 0.07 pounds per set with a metal faceplate, though its cochlea-derived shape is quoted as isolating up to 26dB of outside noise.
The KZ ZS10 uses a 3.5mm jack and is wired. The Falcon 2 also offers a 3.5mm version, but remember that on that version you lose the DSP and all four sound modes — you only get 7.1 surround and mode switching on the Type-C variant.
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