JM Audio Editions is a New York–based maker of custom-modified, handcrafted high-fidelity headphones. Known for the acclaimed XTC line, the brand delivers airy openness, deep bass, and precise imaging favored by audiophiles, musicians, and engineers. Each pair is precision-tuned with premium materials and verified through rigorous testing—frequency response, dynamic range, and harmonic-distortion measurements—then auditioned with reference tracks. JM Audio Editions offers bespoke modifications, accessories, and ready-to-ship models with full warranty and worldwide delivery. EMAIL JOHN AT john@jmaudio.shop