Mega5-EST will come with a 4.4mm by default Introducing the Hisenior Audio Mega5-EST In-Ear Headphones, a groundbreaking tribrid model that combines a dynamic driver, balanced armatures, and electrostatic tweeters to deliver an unrivaled audio experience. This special 7th Anniversary Edition is crafted to celebrate innovation, featuring a custom 10mm bio-cellular diaphragm dynamic driver that ensures airy, dynamic lows with less than 0.5% total harmonic distortion. Enhanced with dual electrostatic super tweeters, the Mega5-EST extends high frequencies up to 80kHz, providing exceptional clarity and detail. Seamless Ergonomics and Sophisticated Design The Mega5-EST not only excels in sound quality but also in comfort. The newly designed smaller shell, optimized sound nozzle, and revised inner drivers' configuration ensure a snug, ergonomic fit. These adjustments, along with a new air vent system, contribute to a comfortable listening experience even during extended sessions. The sleek aesthetics combined with practical design modifications make the Mega5-EST a standout in both functionality and style. Advanced Sound Tuning for Audiophiles Tuned to the Harman IEM Target Curve with an exclusive touch of Hisenior's Smooth Coherence from bass to treble, the Mega5-EST offers a well-balanced sound across all frequencies. The integration of a 4-way crossover network manages each driver impeccably, ensuring smooth transitions and clear separation of musical layers. Whether you're a studio professional or a casual listener, the precision tuning of this IEM will reveal new dimensions in your favourite tracks. Robust Build and Premium Accessories Each set of Mega5-EST headphones comes equipped with the WhiteWhale Premium Cable, designed to enhance signal transmission and durability. The package includes a variety of silicone and foam eartips to suit different ear shapes and preferences, ensuring optimal noise isolation and sound delivery. A pelican protective case provides robust, waterproof, and crushproof storage, making these headphones an excellent choice for on-the-go audiophiles. Exclusive Availability at Headphones.com Exclusively available at Headphones.com in the United States, the Hisenior Audio Mega5-EST sets a new standard for in-ear monitor technology. Priced at $550, these in-ear monitors represent a significant investment in your audio experience, reflecting the meticulous design and advanced technology that Hisenior Audio is known for. Perfect for those who appreciate the finer details in sound, the Mega5-EST is poised to be a favorite among audio enthusiasts seeking superior performance and innovative technology.