We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-20 · 7 min read · Independent comparison
If you want a wired, in-ear monitor tuned for neutral balance with a genuine sub-bass lift, choose Linsoul 7Hz; if you need lightweight wireless on-ear headphones with LDAC, app EQ and a gaming mode, choose FiiO EH11.
• Linsoul 7Hz (7Hz x Crinacle Zero:2) — Biggest strength: a 10mm dual-cavity dynamic driver with a PU+Metal composite diaphragm, tuned for tonal balance with roughly 3dB more low-end than the original Zero. Biggest trade-off: it's a wired IEM with no Bluetooth, no app and only passive noise cancellation.
• FiiO EH11 — Biggest strength: wireless freedom with LDAC up to 990kbps, 30 hours of playtime, dual-device connection and a customizable EQ app. Biggest trade-off: it's on-ear (not in-ear), so isolation is limited by its semi-open back design.
• Buy the Linsoul 7Hz if you listen critically at a desk, care about tonal accuracy, and want a removable cable you can swap or replace.
• Buy the FiiO EH11 if you move around all day, take calls, game on the go, and refuse to be tethered to a cable.
• Different tools, different jobs. One is a wired monitoring earphone; the other is a wireless lifestyle headphone. Neither replaces the other.
The 7Hz x Crinacle Zero:2 is the second generation of a collaboration between 7Hz and Crinacle, a reviewer whose frequency-response database reshaped how the budget audio world talks about tuning. That collaboration matters here, because the whole pitch of this IEM is tonal balance — a sound signature that doesn't exaggerate any one part of the spectrum.
What changed in the "2" version is the low end. The original Zero was praised for balance but criticized for taming the bass too much for people who want energy. The Zero:2 keeps that balanced signature and adds roughly 3dB in the low frequencies. A newly developed 10mm dual-cavity driver with an upgraded PU+Metal composite diaphragm moves faster and harder, which is what lets the extra bass arrive without smearing detail. The stated frequency range is 10Hz to 20kHz, so the extension is genuinely wide on paper.
The cable is worth a mention because it's a real ownership benefit, not marketing filler. It's a high-purity oxygen-free copper cable with silver plating, arranged coaxially and woven in a 140.06 / 250.06 winding pattern for strength and cleaner transmission. It's removable, which means you can swap it for a different cable or replace it if it wears out — something you can't do with most wireless headphones.
Who should buy it: musicians, students, and desk listeners who want an honest, balanced in-ear monitor with a bit of bass warmth, and who are fine being wired to a phone, laptop, dongle or interface. The version with a Type-C mic also handles calls and voice chat directly.
Who should skip it: anyone who wants wireless freedom, active noise cancellation, or an EQ app. This is passive noise cancellation only, so it blocks sound by physically sealing your ear canal — good with the right tips, useless if you want to hear the room. There's no app, no battery, no gaming mode. If those matter, this isn't your product.
The FiiO EH11 is a retro-styled on-ear Bluetooth headphone, and FiiO clearly built it around comfort and wireless convenience rather than studio accuracy. At about 92g with a low clamping force of 1.7N, the design intent is obvious: wear it for hours without your ears or the top of your head complaining. A 1.5-hour charge gives up to 30 hours of playback, which comfortably covers a week of commuting for most people.
The acoustic side is where it surprises. A 40mm long-stroke dynamic driver with a high-damping composite diaphragm, a low-frequency-enhanced design, resonance reduced to 60Hz and bass extension down to 17Hz — that's a bass-forward tuning profile, not a neutral one. The semi-open back design is a deliberate trade: it makes the sound feel more open and less boxed-in, but it also means you'll hear your surroundings and they may hear a little of you. FiiO lists no active noise cancellation here, so don't expect any.
Wireless is the headline. LDAC support at up to 990kbps is roughly three times the data rate of standard SBC/AAC, which matters if you stream from a service that actually serves high-bitrate audio. Bluetooth 5 handles the link, and dual-device connection means you can be paired to a laptop and a phone at once and switch between a call, a video and music without re-pairing. There's a built-in HD microphone, so calls and team chat are covered.
Then there's the personality layer. The FIIO Control App unlocks EQ presets like Pop and Rock, and a dedicated gaming mode is tuned to push footsteps and gunshot details forward — a real feature if you play on a phone or handheld. The physical knob on the wood-grain control panel lets you adjust volume and skip tracks by feel, without pulling your phone out. The transparent mechanical shell nods to 1980s on-ear headphones. And the ear pads detach, so cleaning and replacement are easy, with two differently colored official pairs included.
Who should buy it: commuters, remote workers, casual gamers, and anyone who wants one pair of headphones to jump between phone, laptop and handheld without cables.
Who should skip it: critical listeners chasing a flat, reference-style signature, and anyone who needs real noise cancellation on a plane or in a loud open office. The semi-open on-ear design simply can't deliver that.
• Best for sound accuracy and balance → Linsoul 7Hz. The Zero:2's entire design brief is tonal balance with a measured bass lift.
• Best for bass quantity and depth → FiiO EH11. A 40mm long-stroke driver with 17Hz extension and a low-frequency-enhanced tuning leans noticeably bassier.
• Best for wireless freedom → FiiO EH11. LDAC, Bluetooth 5, dual-device connection, no cable at all.
• Best for long sessions without fatigue → FiiO EH11. 92g and 1.7N clamping force is built for all-day wear; 30 hours per 1.5-hour charge.
• Best for replacing and repairing → Linsoul 7Hz. The OFC silver-plated cable is removable, so a worn cable isn't a dead product.
• Best for gaming and voice chat → FiiO EH11. A tuned gaming mode plus a built-in HD mic is a combination the Zero:2 doesn't offer.
• Best for tuning to taste → FiiO EH11. The FIIO Control App's EQ presets let you reshape the sound; the Zero:2 gives you one signature, done well.
• Best for isolation → Linsoul 7Hz. Passive sealing in your ear canal beats a semi-open on-ear design for blocking noise.
• Best for a wired, latency-free connection → Linsoul 7Hz. No codec, no battery, no pairing.
If I had to pick one, I'd buy the Linsoul 7Hz x Crinacle Zero:2 — but only because my listening happens at a desk, wired, and I care more about balanced tuning than wireless convenience. The bass lift over the original Zero is exactly the correction that model needed, and the removable cable makes it a longer-term purchase. That said, if your life involves moving between a phone, a laptop and a handheld all day, I'd point you to the FiiO EH11 instead. The 30-hour battery, LDAC, dual-device pairing and gaming mode solve problems the Zero:2 doesn't even attempt. Pick based on how you actually listen, not on which one sounds more impressive on paper.
FAQ
No. FiiO lists no active noise cancellation for the EH11, and its semi-open back on-ear design limits passive isolation too. It's built for comfort and open sound, not for blocking out a plane cabin.
They aim at different things. The Zero:2 adds roughly 3dB of low end over the original Zero for a controlled, balanced bass. The EH11 goes further with a 40mm long-stroke driver, a 60Hz resonance point and extension down to 17Hz — a clearly bass-forward tuning. If you want quantity, the EH11 goes deeper; if you want balance, the Zero:2.
Yes. It has a dedicated gaming mode tuned to emphasize footsteps and gunshot detail, plus a built-in HD microphone for team communication. The 7Hz Zero:2 has no gaming mode, though its wired connection avoids Bluetooth latency entirely.
If you're mostly at a desk and value accuracy, the Linsoul 7Hz. If you're mostly mobile and value convenience, the FiiO EH11. Check the current price on Amazon before deciding — both sit in very different product categories, so the value comparison depends on what you're replacing.
As an Amazon Associate I earn from qualifying purchases.
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.
When you buy through links on this page, we may earn a commission from qualifying purchases at no extra cost to you.
Amazon and the Amazon logo are trademarks of Amazon or its affiliates. This site is an independent third-party review and is not affiliated with, endorsed by, or sponsored by Amazon or the product brands mentioned.