The Cayin CS-55A is an integrated tube amplifier characterized by its cutting-edge technology and design. It utilizes four KT88 tubes for its Class AB ultra-linear push-pull amplification, providing 40 watts per channel. The amplifier features multiple inputs, including a phono input, a USB port, and two line inputs, ensuring versatility for various audio sources. The unit is constructed with a fully anodized aluminum front and a carefully designed vented chassis, showcasing a visually appealing finish. It also employs high-quality components such as hand-made point-to-point wiring, audio-grade capacitors, carbon film resistors, and ceramic tube sockets. A soft-start circuit is integrated to prolong the lifespan of both the toroidal power transformer and the output transformers. Users have the option to switch the speaker output impedance between 4 ohms and 8 ohms, adapting to different speaker requirements. The CS-55A includes a built-in MM phono section, catering to vinyl enthusiasts, and a high-resolution DAC capable of handling digital audio signals up to 32-bit/384kHz via its USB input. This combination, along with the ability to operate in Triode or Ultra Linear mode, and compatibility with both KT88 and EL34 tubes, produces a rich, detailed soundstage. Additionally, a headphone jack is located on the front panel, enhancing its functionality. Overall, the CS-55A serves as a powerful and versatile centerpiece for diverse audio systems, suitable for both analog and digital formats.
