The Acurus LS11 is a high-end audio preamplifier designed to provide exceptional performance and flexibility in a modern and elegant design. Some key features and specifications of the Acurus LS11 include:1. Balanced and unbalanced input and output options: The LS11 offers both balanced (XLR) and unbalanced (RCA) inputs and outputs, providing flexibility in connections to other audio components.2. High-quality audiophile-grade components: The LS11 uses top-quality audio components, such as proprietary in-house developed capacitors, polypropylene capacitors, and Vishay metal-film resistors, to ensure superior audio performance.3. Seven-stage regenerative low-noise voltage gain: The Acurus LS11 uses a seven-stage regenerative low-noise voltage gain to amplify signals, resulting in a low-noise floor, wide dynamic range, and unparalleled clarity.4. Variable output level: The variable output level feature allows for the adjustment of the signal level based on the needs of connected amps or headphones.5. Balanced gain switching: The Acurus LS11 provides balanced gain switching, allowing for the choice between a lower gain setting for less sensitive sources, or a higher gain setting for more sensitive sources.6. Fully voltage selectable: The preamplifier is fully voltage selectable, making it compatible with a wide variety of AC mains voltages.7. Asynchronous USB input: The LS11 has an asynchronous USB input, which is designed to accept digital audio signals from computer-based sources, such as streaming music services, confidently with the highest fidelity.Overall, the Acurus LS11 is a high-performance and versatile preamplifier that is capable of delivering stunning audio quality to any high-end audio system.