Koss ESP/95X Plus Electrostatic Headphone FAQ
By Koss Stereophones | Published: 2026-10-25
Category: How-to Guides
Answers to common questions about the Koss ESP/95X Plus electrostatic headphone system, including setup, care, and sound quality.
Quick answer
The Koss ESP/95X Plus is an electrostatic headphone system that delivers exceptional clarity and detail, but it requires a dedicated amplifier and careful handling.
Why electrostatic headphones sound different
Electrostatic headphones use a thin, charged diaphragm suspended between two stator plates. This design allows for extremely fast transient response and low distortion, which is why the ESP/95X Plus is prized for its unmatched sound quality. However, they require a special energizer (included) and cannot be driven by a standard headphone jack.
Caring for the ear cushions and carrying case
The ESP/95X Plus comes with all-new premium velour-wrapped ear cushions designed for optimal listening. Over time, velour can absorb oils and debris, so spot cleaning with a damp cloth is recommended. The included FREE ESP Leather Carrying Case protects your investment, but note that supply is extremely limited, so it's wise to reserve one if you are ordering internationally.
Frequently asked questions
- Do I need a special amplifier for the ESP/95X Plus?
- Yes. The ESP/95X Plus is an electrostatic system and requires the included energizer (amplifier) to power the headphones. It cannot be used with a standard headphone jack or portable DAC.
- How do I set up the ESP/95X Plus for the first time?
- Connect the energizer to a power source and to your audio source via the supplied cable. Then plug the headphone cable into the energizer's output. Wait a few seconds for the system to stabilize before listening.
- Can I replace the ear cushions myself?
- Yes. The velour ear cushions are replaceable. Gently pull off the old cushions and snap the new ones onto the earcup ring. For detailed steps, see our separate guide on replacing ear cushions for the ESP/95X. Check our 'How to Replace Ear Cushions on Koss ESP/95X' article for a step-by-step walkthrough.
- Is the carrying case included with every purchase?
- The FREE ESP Leather Carrying Case is included but has extremely limited supply. If you are placing an international order, confirm availability before purchasing.
- What is the warranty on the ESP/95X Plus?
- Koss offers a limited lifetime warranty on the headphones and a one-year warranty on the energizer. Keep your proof of purchase for any warranty claims.
Product facts
- ESP/95X Plus: Featuring the unmatched sound quality trademark of the original, the Koss ESP/95X Plus Electrostatic Stereo Headphone System comes in an exclusive midnight blue colorway and features all-new premium velour-wrapped ear cushions. The midnight blue finish makes it visually distinct, while the velour cushions improve long-session comfort and acoustic seal.
ESP/95X Plus
