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ES Lab - EX-1a Open-Back Electrostatic Headphone is an elegant and musical open-back electrostatic headphone that combines premium audio performance with quality craftsmanship in a relatively affordable package for audiophiles and enthusiasts. It builds on ES Lab's experience from flagship models and brings much of the technology and precision that characterizes higher segments, while maintaining its own character and identity.
The EX-1a uses a 68mm ultra-thin Mylar electrostatic transducer with OFC copper-plated electrodes to drive the diaphragm with exceptional precision and control. The open acoustic architecture delivers a spacious, airy soundstage with impressive stereo perspective and depth, while the electrostatic technology contributes to very low distortion and fast transient response.
The design is both robust and aesthetically pleasing, with a CNC-machined aluminum-magnesium alloy chassis and stainless steel details, covered in elegant leather for a classic, vintage-inspired look. Comfort is enhanced by genuine lambskin leather ear cushions that are soft against the skin and well-suited for long listening sessions.
The EX-1a requires a compatible external electrostatic amplifier or energizer with 580V bias and Stax Pro Bias connection, and is not intended to be powered directly from standard headphone outputs. This makes it an ideal choice for dedicated listening systems where the highest possible sound quality is the goal.
In summary, the ES Lab EX-1a offers a detailed and engaging sound experience with electrostatically driven elements, elegant design and good ergonomics, which suits both audiophiles and those who want to upgrade to electrostatic sound without going all the way to more expensive variants - a good first step, simply.
ES Lab - EX-1a in brief:
* Open electrostatic headphone for maximum transparency and speed
* Wide frequency range 10 Hz - 41 kHz with very low distortion
* 99 dB / 100 V r.m.s. - effective and dynamic for electrostatic systems
* DC 580 V Pro Bias, 5-pin Stax compatible connection
* CNC-machined aluminum-magnesium chassis for low weight and controlled resonance
* Approx. 380 g - balanced comfort for long listening sessions
* Requires external electrostatic energizer/amplifier 
