My overall pick for most music listening is the Focal; choose the SIMGOT if in-ear fit and its hybrid driver setup matter more to you.
Focal AZURYS High-Fidelity Closed-Back vs Linsoul SIMGOT SuperMix 4 at a Glance
• Focal AZURYS High-Fidelity Closed-Back: A closed-back over-ear design with 40 mm aluminium/magnesium drivers, memory foam earpads, and a lightweight magnesium yoke. Its trade-off is that it is wired and physically larger than an in-ear monitor.
• Linsoul SIMGOT SuperMix 4: A compact wired IEM with four driver types and a detachable 0.78 mm two-pin cable. Its trade-off is that it sits in the ear, which some people find less comfortable than over-ear cushions for long sessions.
• Choose Focal for full-size, closed-back listening and a cushioned fit; choose SIMGOT for in-ear wear, a multi-driver setup, and a replaceable cable.
The Focal AZURYS is a passive, closed-back headphone built around 40 mm aluminium/magnesium “M”-shaped dome drivers. Its stated frequency range is 15 Hz to 22 kHz, and its listed harmonic distortion is below 0.3% at 1 kHz and 100 dB SPL. Those figures describe the design; they do not guarantee that every listener will prefer its sound. The closed-back construction and earpad materials point toward a more enclosed listening experience than an open headphone.
How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-17 · 6 min read · Independent comparison
For side sleepers, though, the over-ear shape is a real caveat. A pillow can press on the earcups, and the product details do not identify a sleep-specific design. I would skip it if you need a headphone expressly made to lie on your side, or if you want wireless freedom: the listed connection is a 3.5 mm jack, and the AZURYS is described as passive.
The SuperMix 4 is an in-ear monitor that combines a 10 mm dynamic driver with balanced-armature, planar, and piezoelectric drivers. Its stated frequency range is 8 Hz to 40 kHz. The tuning description points to full-bodied low frequencies, smooth mids, and added high-frequency detail. That mix may suit listeners who want an IEM with a complex driver arrangement for music or gaming.
The resin housings have separate acoustic ducts for the drivers, and the cable is detachable through a 0.78 mm two-pin connection. It comes with an oxygen-free copper silver-plated cable. The detachable design is a practical distinction from a fixed cable, though the earphones remain wired. Their in-ear form makes them much less bulky than full-size headphones, but comfort depends heavily on how the earpieces fit your ears.
That compact shape may seem appealing for listening while reclining, but it does not make the SuperMix 4 a sleep product. The provided details do not specify waterproofing, so I would not choose it as waterproof bluetooth earbuds for side sleepers—or assume it is safe for sweat, water, or overnight use. It is also not Bluetooth: the listed connection is wired, with a 3.5 mm jack.
• Best for an over-ear listening experience → Focal AZURYS High-Fidelity Closed-Back. Its full-size, closed-back design and memory foam earpads distinguish it from the in-ear SIMGOT.
• Best fit to consider for lying on your side → Linsoul SIMGOT SuperMix 4. Its in-ear form avoids large earcups against a pillow, but fit and pressure vary, and it is not described as sleep-specific.
• Best for a four-driver in-ear design → Linsoul SIMGOT SuperMix 4. It combines dynamic, balanced-armature, planar, and PZT drivers in one earphone.
• Best for a 40 mm aluminium/magnesium driver setup → Focal AZURYS. Choose it if that full-size driver design is the feature you are after.
• Best for a detachable cable → Linsoul SIMGOT SuperMix 4. Its 0.78 mm two-pin cable can be detached; both products are wired in the listed specifications.
• Best for someone seeking a gaming headset for side sleepers → Neither is an exact match. The SIMGOT is identified for gaming and offers an in-ear form, but the available details do not describe a microphone or sleep-specific fit. The Focal is a headphone, not a headset with a listed microphone.
• Best for avoiding in-ear tips → Focal AZURYS. Its design sits around the ears rather than in them, though its earcups may be awkward against a pillow.
• Best for someone seeking waterproof bluetooth earbuds for side sleepers → Neither. The SIMGOT is wired, and neither product’s supplied specifications establish waterproofing or Bluetooth use.
I would choose the Focal AZURYS for everyday music listening because I prefer its closed-back, over-ear design and memory foam earpads to relying on an in-ear fit.
For side sleepers, I would still treat comfort as a personal fit question: the Focal’s earcups may press into a pillow, while the SIMGOT is smaller but sits in the ear.
If I wanted compact wired IEMs with four driver types and a detachable cable, I would choose the SuperMix 4 instead.
Neither is my pick for Bluetooth or waterproof sleep listening.
FAQ
The supplied specifications list a wired connection with a 3.5 mm jack and a detachable cable. They do not establish Bluetooth connectivity or waterproofing, so do not treat it as a wireless or water-resistant earphone.
The Focal AZURYS is listed at 15 Hz to 22 kHz, while the SIMGOT SuperMix 4 is listed at 8 Hz to 40 kHz. Those ranges are specification figures, not a complete measure of sound quality or a guarantee of what each listener will hear.
The SuperMix 4 is described for gaming and uses an in-ear design, but the supplied details do not list a microphone. The Focal is a closed-back headphone with a 3.5 mm connection; choose based on fit and listening preferences, and verify that your gaming setup has the connections and communication features you need.
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