Sony / NW-ZX900

The NW-ZX900 is a high-end Walkman that incorporates many of the high-quality audio components found in the WM1 series. It features a machined aluminum frame, an oxygen-free copper rear chassis, an S-Master HX amplifier, and an ultra-low-noise LDO regulator.

■ Incorporates numerous high-quality components derived from the flagship "WM1 Series"
・ As a high-end model designed to elevate portable audio to new heights, this device inherits the sound-engineering philosophy cultivated in the flagship "WM1 Series." By utilizing many of the same high-grade components, it delivers a superior, elevated listening experience for your everyday music enjoyment.

■ High-purity oxygen-free copper (OFC) rear chassis and a precision-machined aluminum frame
・ A high-purity oxygen-free copper (OFC) rear chassis is employed to suppress the effects of noise and interference. Combined with a highly rigid frame machined from an aluminum alloy, this creates a stable structure that is resistant to electrical noise and interference—enabling deep, resonant bass, an expansive soundstage, and precise, detailed reproduction across the mid-to-high frequency ranges.

■ "S-Master HX" for faithful sound reproduction, featuring three types of "look-ahead" noise shapers
・ Equipped with the "S-Master HX" digital amplifier—developed exclusively for the Walkman—this device supports native DSD formats, balanced output, and high-power playback. It features a choice of three "look-ahead" noise shapers that predict and control quantization noise, resulting in powerful, dynamic bass that responds rapidly to musical changes, alongside a clear, crisp response.

■ Ultra-low-noise LDO regulator for stable power supply
・ An ultra-low-noise LDO (low-dropout) regulator—a power IC capable of handling high current—ensures a stable power supply. This allows the "S-Master HX" to perform at its full potential while minimizing switching noise and unwanted interference, thereby enhancing the purity of the audio signal to deliver a clear, powerful sound.

■ Vivid 5.0-inch display and a highly portable, user-friendly design
・ Combines a vivid 5.0-inch display with a portable design optimized for ease of use. Enjoy comfortable operation anytime, anywhere, and immerse yourself in the world of music without worrying about the time, thanks to a long-lasting battery.

■ Seamless streaming via Wi-Fi and Android apps
・ Supports Wi-Fi connectivity and the use of Android-based apps. From your favorite streaming services to downloading your personal music library, you can enjoy a wide variety of musical content in high sound quality, exactly as you wish.

■ Sony’s proprietary audio processing technology brings out the best in diverse sound sources
・ Equipped with Sony’s unique audio processing technology, it maximizes the appeal of various sound sources and musical genres. It enhances the quality of your audio, delivering a richer and more versatile listening experience.


・ Product Name: Sony High-End Walkman
・ Display: Vivid 5.0-inch display
・ Digital Amplifier: S-Master HX (supports native DSD, balanced output, and high-output playback)
・ Audio Processing & Noise Control: Predictive noise shaper (with 3 selectable types) and Sony’s proprietary audio processing technology
・ Chassis Material & Structure:

Frame: Milled aluminum alloy frame (high-rigidity enclosure)

Rear Chassis: High-purity oxygen-free copper (OFC) rear chassis
・ Power Supply Circuit: High-current power supply IC (ultra-low-noise LDO regulator)
・ Connectivity, Communication & OS: Wi-Fi enabled; supports Android apps
・ Usability & Battery: Long-lasting battery; portable, user-friendly design
・ Audio Components: Features many of the same high-quality audio components found in the WM1 series