If you want wireless listening with a charging case and hybrid drivers, choose ICESOMNUS Sabbat E16; if you need wired in-ear monitors with a cable and multiple ear-tip sizes, choose NFACOUS NA20. For glasses wearers, the E16 is the more convenient starting point for wireless headphones, while the NA20 suits someone who prefers a wired setup and a fit they can adjust with included tips.
• ICESOMNUS Sabbat E16’s biggest strength: Bluetooth 5.2, aptX/AAC/SBC support, and a charging case rated for up to 30 hours of listening; trade-off: it has an in-ear fit and needs charging.
• NFACOUS NA20’s biggest strength: a wired connection, single dynamic driver, and four pairs of ear tips in XS, S, M, and L; trade-off: it is not wireless and has no charging-case battery for untethered use.
• Sound design: the E16 combines a dynamic driver with a balanced armature driver; the NA20 uses one dynamic driver and lists a 20 Hz–40 kHz frequency range.
• Everyday setup: the E16 connects over Bluetooth and supports USB-C and Qi charging; the NA20 uses a 3.5 mm connection and includes a 6.35 mm adapter.
• Who each pick is for: choose E16 for cable-free listening and hybrid-driver design; choose NA20 for a wired in-ear monitor with interchangeable tips and a carrying case.
The E16 is an in-ear wireless earbud built around two driver types: a 10 mm dynamic driver for bass and a balanced armature driver intended to bring out vocal and high-frequency detail. That combination gives it a different design emphasis from the NA20’s single dynamic driver. It also supports aptX, AAC, and SBC audio codecs over Bluetooth 5.2, so it is made for listening from a compatible wireless device without plugging in a cable.
For daily routines, the practical draw is the case and its charging options. The earbuds are listed for more than six hours of playback on a charge, with up to 30 hours total when using the case. Charging is via USB-C, and the case also supports Qi wireless charging. Automatic connection when opening the case is another convenience feature for someone who wants to start listening without handling a cable or navigating a wired adapter.
How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-23 · 7 min read · Independent comparison
The NA20 is a wired in-ear monitor with a single dynamic driver. Its listed frequency range is 20 Hz–40 kHz, and its design includes a 32-ohm impedance. Those figures describe the audio and electrical specifications, but they do not by themselves predict how every listener will perceive the tuning. The product also describes an acoustic design using damping nets and tuning sponges to manage reflected sound, plus an integrated tuning board intended to accommodate different music styles.
Its wired format makes it a fit for listening setups with a compatible 3.5 mm jack. The included 6.35 mm adapter adds another connection option for equipment with that size jack. There is no Bluetooth connection or battery to charge, but the trade-off is that the cable ties the listening position to the connected device. The package includes a storage case and four pairs of silicone-style ear tips in XS, S, M, and L, giving the buyer several sizes to try.
The NA20’s shell uses high-strength polycarbonate and CNC-carved aluminum parts, with a frosted surface. It is shaped as an in-ear monitor, and the product describes its form as ergonomic for longer listening or mixing sessions. That may suit glasses wearers who want ear clip headphones for glasses wearers only if they actually prefer an in-ear monitor—the NA20 is not an ear clip design. Skip the NA20 if you need Bluetooth freedom, a charging case, or a listening setup without a cable.
• Best for wireless listening → ICESOMNUS Sabbat E16. It uses Bluetooth 5.2 and supports aptX, AAC, and SBC; the NA20 is wired.
• Best for avoiding routine charging → NFACOUS NA20. Its wired design does not rely on an earbud battery or charging case.
• Best for a charging case → ICESOMNUS Sabbat E16. The case supports USB-C and Qi charging and contributes to up to 30 hours of listed total playback.
• Best for hybrid-driver construction → ICESOMNUS Sabbat E16. It combines a dynamic driver and a balanced armature driver; the NA20 uses a single dynamic driver.
• Best for trying several ear-tip sizes → NFACOUS NA20. It includes four pairs, ranging from XS to L.
• Best for switching between 3.5 mm and 6.35 mm connections → NFACOUS NA20. It includes a 6.35 mm adapter alongside its 3.5 mm connection.
• Best for glasses wearers who want a cable-free setup → ICESOMNUS Sabbat E16. Its in-ear form avoids an over-ear headband, though the available specifications do not establish how it will fit every wearer.
• Best for a wired monitor and included storage case → NFACOUS NA20. It comes with a carrying case and a wired connection, but gives up the convenience of Bluetooth.
Buying Considerations
Think about the device you will connect before deciding. The NA20 has a 3.5 mm jack and includes a 6.35 mm adapter, which can suit compatible audio equipment, but the product sheet does not list Bluetooth. The E16 connects wirelessly, so your choice hinges partly on whether you want a cable-free routine or a direct wired connection.
Finally, consider what “sound design” means to you. The E16’s dual-driver layout and codec support make its wireless audio features a central part of the package. The NA20 instead pairs one dynamic driver with its described damping and tuning components, alongside a cable and adapter. The specifications offer useful distinctions, but they are not a substitute for personal preference about sound or fit. If price affects your decision, check the current price on Amazon rather than relying on an estimate here.
I would choose the ICESOMNUS Sabbat E16 for glasses wearers who want wireless listening, a hybrid-driver design, and a case that supports USB-C and Qi charging. Its in-ear format and lack of an over-ear headband make it the more straightforward option for a cable-free glasses-wearing routine, though fit remains personal. I would pick the NFACOUS NA20 instead for a wired setup, multiple tip sizes, and the included jack adapter.
No. The E16 uses Bluetooth 5.2 and supports aptX, AAC, and SBC codecs. The NA20 is a wired in-ear monitor with a 3.5 mm jack and a 6.35 mm adapter.
The E16 may suit someone who wants in-ear listening without an over-ear headband and without a cable. The NA20 also uses an in-ear design and includes four tip sizes, but neither product’s listed specifications guarantee comfort for every glasses wearer.
The E16 is listed for more than six hours per earbud charge and up to 30 hours with the case. The NA20 is wired, so its specifications do not provide a battery-playback figure.
Choose the NA20 if you want a 3.5 mm wired connection, a 6.35 mm adapter, four pairs of ear tips, and a storage case. Choose the E16 if Bluetooth listening and a USB-C/Qi charging case matter more.
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