If you want an open-back planar headphone for spacious, home-based listening, choose SENDYAUDIO Peacock Gold Planar; if you need a lightweight electrostatic setup for focused listening, choose Koss ESP/95X. For swimming, choose neither: both are wired, open-air or open-back over-ear headphones, not swimming headphones.
SENDYAUDIO Peacock Gold Planar vs Koss ESP/95X at a Glance
• SENDYAUDIO Peacock Gold Planar strength: 88 mm planar magnetic driver, wood cups, and a design focused on natural mids and vocals. Trade-off: It is wired, open-back, and has no noise control.
• Koss ESP/95X strength: Electrostatic drivers, a stated 8–35,000 Hz frequency range, pivoting ear cups, and a lightweight 353 g design. Trade-off: It needs the E/90 Energizer to deliver the electrostatic system’s full potential.
• Choose SENDYAUDIO if you want an over-ear planar headphone for listening at home and value its stated emphasis on vocals and comfort.
• Choose Koss if you want an electrostatic headphone with an adjustable fit and included protective case for a dedicated listening setup.
• For swimming, neither is suitable: their open designs and wired connections do not match the practical needs of listening in water.
The SENDYAUDIO Peacock Gold Planar is an open-back, over-ear headphone with a planar magnetic driver and an 88 mm film. Its stated design priorities include efficient electroacoustic energy conversion and a sound presentation with natural, delicate mids and vocals. That points toward a listener who spends time with vocal recordings and wants a wired headphone for a quiet room, rather than a sealed headset for travel or exercise.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-23 · 6 min read · Independent comparison
The product information lists a 50-ohm impedance, a 6.35 mm headphone jack, and wood enclosure material. It also describes comfortable wearing with no pressure, though the sheet does not provide a weight or a detailed fit measurement. The wired connection and open-back design are important trade-offs: this is not a wireless option, and the listed noise control is none.
I’d consider it for someone building a stationary listening setup who is drawn to planar drivers and the product’s stated vocal focus. I’d skip it for swimming, outdoor workouts, or situations where you need isolation. The open-back format and cable make those use cases a poor match, regardless of how appealing the driver design may be for home listening.
The Koss ESP/95X is an over-ear electrostatic headphone with a listed frequency range of 8–35,000 Hz. It comes with an E/90 Energizer, which is described as the power source needed to bring out the electrostatic drivers’ full potential. In practical terms, this is a more dedicated listening arrangement than a conventional headphone you simply connect to any device.
The Koss weighs 353 g and has pivoting ear cups and an adjustable headband. Its cushions are described as leatherette in the product details, while the design information also lists fabric among the enclosure materials. The product includes a protective case for the headphones, Energizer, and cables. Those features suit someone who wants a considered home setup and values an adjustable fit and a way to store the system together.
I’d look at the Koss if its electrostatic approach and included Energizer fit the kind of listening system you want. I’d pass if you need a compact, self-contained headphone for movement, or a product for the pool. It is wired and open-air, and its system depends on the Energizer; none of that suggests a swimming-ready design.
Side-by-Side: Which Should You Choose?
• Best fit for an electrostatic headphone system → Koss ESP/95X. It uses electrostatic drivers and is paired with the E/90 Energizer.
• Better match for vocal-focused listening → SENDYAUDIO Peacock Gold Planar. Its stated sound character specifically calls out natural, delicate mids and vocals.
• Better match if you want a stated frequency range → Koss ESP/95X. The specification lists 8–35,000 Hz; the Peacock sheet does not provide a frequency range.
• Better fit if low weight is a key consideration → Koss ESP/95X. Its stated weight is 353 g, while the Peacock’s weight is not listed.
• Better fit if you want wood enclosure material → SENDYAUDIO Peacock Gold Planar. The Koss product information instead lists leather and fabric materials.
• Better fit if a protective case is included → Koss ESP/95X. Its listed accessories include a case for the headphones, Energizer, and cables.
• Better for swimming, sports, or open-ear listening in water → neither. These are wired, over-ear open designs. The information provided does not describe waterproofing or a swimming-specific fit.
The search for the best multipoint headband headphones for swimming, the best low latency sports earbuds for swimming, or the best open ear earbuds for swimming leads to a different category of product. Neither of these models is described as an earbud, a multipoint wireless headphone, or a swimming device. I wouldn’t treat either as a substitute for gear designed specifically for use in water.
For dry listening, the choice is more straightforward. The SENDYAUDIO’s appeal is its planar design, wood construction, and stated vocal character. The Koss brings a different driver technology, a specified frequency range, a known weight, and an Energizer-based system. Neither wins every category, and neither should be chosen for a use its design does not support.
In my opinion, I’d choose the SENDYAUDIO Peacock Gold Planar for a home setup centered on its planar driver and stated natural vocal presentation. The Koss is a compelling alternative if you specifically want an electrostatic system and value its adjustable fit and included case. For swimming, though, I recommend neither: neither product is described as suitable for water. I would buy a headphone made for swimming instead.
Neither is described as waterproof or intended for swimming. Both are wired, over-ear open designs, so I would not use either in the pool.
The SENDYAUDIO product information specifically describes its mids and vocals as natural, delicate, and gentle. The Koss is presented around electrostatic reproduction and a stated frequency range, but its sheet does not make the same specific vocal claim.
The product information says the E/90 Energizer delivers the full potential of the electrostatic drivers. That makes it an important part of the Koss setup, rather than a detail to overlook when choosing between these headphones.
The Koss is listed at 353 g. The SENDYAUDIO sheet does not provide a weight, so there isn’t enough information here to compare their weights directly.
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