How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want a secure, noise-blocking wired monitor for stage, sport and travel, choose Sorandy IEM Headphone; if you need an open-back, wide-stage IEM for critical listening and production work, choose Jyinudio TANGZU YuXuanJi in‑Ear.
• Sorandy IEM Headphone — biggest strength: a single balanced-armature HiFi setup paired with real passive noise cancelling, so it seals you off from a loud room instead of letting the room in.
• Sorandy IEM Headphone — biggest trade-off: a closed, isolating design with no open-back venting, so the soundstage stays intimate rather than airy, and the Light Blue resin finish is more "earplug" than "jewelry."
• Jyinudio TANGZU YuXuanJi in‑Ear — biggest strength: an open-back structure with a 10mm TPLX topology dynamic driver inside a zinc alloy housing, built for a spacious, well-imaged presentation.
• Jyinudio TANGZU YuXuanJi in‑Ear — biggest trade-off: open-back means it leaks and lets outside sound in, so it is a poor choice for noisy commutes or loud stages.
• Pick Sorandy IEM Headphone if you want isolation and a locked-in fit while performing, training or travelling.
• Pick Jyinudio TANGZU YuXuanJi in‑Ear if you want an open, detailed monitor for mixing, classical, acoustic and live recordings.
The Sorandy IEM Headphone is built around one idea: shut the world out. A single balanced armature unit drives the full range, and the tuning is aimed at lossless HiFi stereo rather than a big, roomy presentation. That is a deliberate trade. A balanced armature in a sealed resin shell gives you a tight, controlled, detail-forward sound, and the resin cavity itself is shaped for a comfortable in-ear seat that stays put.
The noise cancelling claim is the headline here. This is a headset pitched at performances, sports and travel — the exact situations where ambient noise ruins a listen. If you are a singer tracking a click in a loud room, or a musician who needs to hear the mix and not the crowd, an isolating IEM is the tool. The 3 sizes of silicone eartips (S, M, L) matter more than they look: getting a real seal is what makes the isolation actually work, so having three sizes to dial in is a practical win.
The detachable cable is a genuinely useful design choice. It is a silver-plated copper cable with two-strand braiding, and Sorandy specifically calls out reduced skin effect from high-frequency signal transmission plus better stability in the connection. In plain terms: a braided, shielded cable resists interference, and a replaceable one means a snagged cable does not end the earphones. The pre-molded wrap-around section over the ear also holds the fit secure, which is exactly what you want when you are moving.
Who should skip it? Anyone chasing an expansive, out-of-your-head soundstage. A closed resin shell with a balanced armature is not going to give you that airy, speaker-like image. If your listening is mostly solo, quiet-room critical listening, the isolation here is solving a problem you do not have. And note the Light Blue finish — it is a statement, not a neutral black. Sorandy's own 90-day manufacturer warranty is also on the short side compared with the year offered on the other set, which is worth knowing if you are hard on gear.
Jyinudio TANGZU YuXuanJi in‑Ear: Who It's For
The driver is a 10mm TPLX topology dynamic unit — a diaphragm with deliberate surface patterning. The design intent is acoustic precision: better clarity, lower distortion, and balanced tonal accuracy across the range. A dynamic driver of this size generally moves more air than a small balanced armature, which is part of why the open-back presentation feels bigger. The zinc alloy housing is not just cosmetic either. Die-cast zinc is dense, and Jyinudio points to it damping unwanted vibrations and resonances, with the casting process allowing complex internal geometry to control how sound waves travel inside the shell.
In the ear, the YuXuanJi uses an oval earpiece shape, and the spec sheet lists a 15.6 ohm impedance with 104 dB sensitivity. Low impedance plus high sensitivity is an easy load — this is the kind of IEM that a phone or a basic dongle can drive without strain, which matters if you are not running a dedicated amp.
Comfort over long sessions is where open-back design earns its keep here. Because air flows through the shell, pressure does not build up the way it can in a fully sealed IEM, and Jyinudio explicitly frames the balanced sound as reducing ear fatigue. If you mix for hours, that is a real difference.
What you give up is isolation. The YuXuanJi relies on passive noise cancellation and sound isolation from the eartip seal, and an open-back shell fundamentally cannot block a room. On a plane, a train or a loud office, you will hear everything. It also comes with a 3.5mm plug, no microphone, and a 1.2m silver-plated oxygen-free copper cable with a 0.78mm 2-pin detachable interface — great for swapping cables, but not a headset for calls. The box includes six pairs of silicone eartips, a cleaning cloth and a silicone carrying case, and the warranty runs a full year.
Side-by-Side: Which Should You Choose?
• Best for isolation in loud places → Sorandy IEM Headphone. Noise cancelling plus a sealed resin shell is designed to block performances, sport and travel noise.
• Best for soundstage and imaging → Jyinudio TANGZU YuXuanJi in‑Ear. The open-back structure is built for a spacious, well-placed presentation.
• Best for mixing and critical listening → Jyinudio TANGZU YuXuanJi in‑Ear. The 10mm TPLX driver is tuned for clarity and low distortion across the spectrum.
• Best for long, fatigue-free sessions → Jyinudio TANGZU YuXuanJi in‑Ear. Open airflow and a balanced tuning are designed to reduce ear fatigue.
• Best for cable repairability → a tie, with a caveat. Both are detachable, but Sorandy uses a silver-plated copper braided cable while the YuXuanJi uses a 1.2m silver-plated OFC cable with a standard 0.78mm 2-pin interface.
• Best for easy driving without extra gear → Jyinudio TANGZU YuXuanJi in‑Ear. At 15.6 ohm and 104 dB sensitivity, it is an undemanding load.
• Best for classical, acoustic and live recordings → Jyinudio TANGZU YuXuanJi in‑Ear. That is the genre list the open-back tuning is explicitly aimed at.
In my opinion, most people shopping this pair should buy the Jyinudio TANGZU YuXuanJi in‑Ear. The open-back design, the topology-patterned 10mm driver and the dense zinc alloy housing add up to a more interesting, more revealing listen, and the easy 15.6 ohm load means you do not need extra gear to get the most from it. I would only steer you to the Sorandy IEM Headphone if isolation is your actual priority — performing, training or travelling in noise. If that is your life, its noise cancelling, secure fit and three eartip sizes are the right answer. If you are listening in a quiet room and want to hear the recording, the YuXuanJi is the one I would pick.
how to open back headphones work
Open-back headphones — and open-back IEMs like the TANGZU YuXuanJi — leave the rear of the driver vented so air can move in and out of the shell. That airflow reduces internal pressure buildup and lets sound radiate more freely, which is what creates the wider, more spacious stage. The trade-off is that the same opening lets outside noise in and your music out.
what is open back studio headphones
It is a headphone or in-ear monitor designed with a vented rear chamber rather than a sealed one. In studio use, that translates to a more natural, speaker-like image and less ear fatigue over long sessions, which is why mixing and mastering work often favours them. The YuXuanJi applies this same principle at the in-ear scale with its open-back structure.
what are the best open back headphones
There is no single answer — it comes down to fit and use case. In my opinion, within this comparison the TANGZU YuXuanJi is the stronger open-back pick because it pairs the open structure with a 10mm TPLX dynamic driver and a zinc alloy housing that damps resonance. If you need isolation instead of openness, an open-back design is the wrong tool and the Sorandy IEM Headphone is the better fit.
are open back headphones better
They are better for some things and worse for others. Open-back designs like the YuXuanJi tend to win on soundstage, imaging and long-session comfort, which suits mixing, classical and acoustic listening. They lose on isolation, so for travel, stage or noisy environments a sealed, noise-cancelling design such as the Sorandy IEM Headphone is the better choice.
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