Margules - Margules U4 Planar Magnetic Headphones The Margules U4 are open-back planar magnetic headphones created to deliver a natural, immersive, & emotionally convincing listening experience. Developed under the ANA (Aligned Neuro-Acoustics) philosophy. They combine large-format planar drivers and hand crafted solid wood construction. Has a holographic imaging & superior comfort for extended listening sessions. The Beginning of True Listening The Margules U4 represent a new reference in high-end personal audio. Designed for audiophiles, musicians, engineers, and music lovers who seek far more than volume or artificial excitement, U4 reveals recordings with tonal balance, harmonic texture, spatial precision, and true musicality. Its architecture combines high-resolution planar magnetic technology, premium materials, and handcrafted construction to create an intimate and deeply immersive sonic experience. ANA™ (Aligned Neuro-Acoustics) PHILOSOPHY At Margules, we understand that music is not experienced through specifications alone. That is why ANA™ (Aligned Neuro-Acoustics) prioritizes the elements that truly shape human perception: -Preservation of harmonic structure -Temporal coherence -Spatial stability -Natural timbre -Living microdynamics -Reduced listening fatigue -Emotional connection to the performance The result is a sound that feels more organic, believable, and musically satisfying. Premium OCC + Silver Cable Included is a high-grade 1.5 meter OCC + Silver cable with balanced connection. Includes adapter: -4 Pin XLR Female to 1/4″ Male Adapter Specs: Tranducer Size: 70 x 95mm Frequency response: 20Hz-30kHz Maximum Power handling: 5W RMS THD: