The Cayin CS-55CD is a stand-alone hybrid tube DAC CD player developed to partner with the CS, MA and LA series integrated amplifiers. D/A conversion is accomplished by a Texas Instruments PCM5101 chipset, while the CS-55CD’s analogue output stage uses a 12AU7 tube. The CS-55CD utilizes a high-speed USB 2.0 receiving and decoding 32bit/384kHz high resolution digital signals together with high-quality audio operational amplifier circuits, included USB input and remote.