In a digital audio system, the power supply is far more than just an energy source that keeps the equipment running.

 The quality of the power directly affects the stability and noise performance of the entire system, ultimately influencing the naturalness, detail, and musical expression of the playback.

 The sPS-550 is SOtM’s high-performance power supply, developed with a strong focus on the importance of power quality.

 Built upon SOtM’s extensive experience in power supply design, the sPS-550 offers multiple output voltages and generous power capacity, allowing a single power supply to support a wide range of audio equipment as well as computer-based audio systems. By delivering exceptionally clean and stable power, it creates an environment in which connected components can perform at their full potential.

 Conventional power supplies primarily focus on reducing noise coming from the AC mains. In real-world audio systems, however, the connected equipment itself also generates various forms of electrical noise, which can propagate back through the power line and affect the entire system.

 The sPS-550 has been engineered with this in mind. Utilizing SOtM’s proprietary power supply design and carefully selected audio-grade components, it effectively suppresses not only external noise entering from the AC source, but also unwanted noise generated by connected devices, providing a cleaner and more stable power environment.

 To support a wide variety of applications, the sPS-550 provides eight selectable output voltages: 5V, 7V, 9V, 10V, 12V, 15V, 17V, and 19V. The desired output voltage can be easily selected using the rear-panel voltage selector, making the sPS-550 suitable for a broad range of audio equipment and computer-based audio systems.

 With a maximum output of 80 watts, the sPS-550 delivers stable power even to devices with high current demands. It also incorporates over-voltage, over-current, and thermal protection circuits to ensure excellent reliability and long-term operational stability. Ample current capability enables the system to remain stable during dynamic load changes, helping preserve a more effortless and natural musical presentation.

 While the sPS-550 delivers outstanding performance on its own, it achieves even greater synergy when combined with other SOtM products. Paired with devices such as the sMS-2000, sMS-500, sNH-10G, and tX-USBultra, it provides cleaner and more stable power, reducing system-wide noise while enhancing musical detail, spatial presentation, and overall naturalness.

 At SOtM, we view a digital audio system as an integrated whole rather than a collection of individual components. Power, networking, USB signal integrity, and clocking all interact with one another, and only when these elements work in harmony can the system deliver its full performance. The sPS-550 plays a fundamental role by providing the stable power foundation upon which the entire SOtM system is built.

 Many power supplies are designed simply to provide the correct output voltage. At SOtM, however, we believe that the quality of the power delivered is just as important as the voltage itself, and that it plays a vital role in determining the overall performance of an audio system.

 The sPS-550 is not simply a device that supplies power. It is a purpose-built audio power supply designed to improve the power environment so that the entire system can perform at its very best.

 Upgrading the power supply is not simply replacing another component—it is strengthening the very foundation of the entire audio system.

 The sPS-550 is an essential component designed to build that foundation.