ProLogue Eight

About the ProLogue Eight

The PrimaLuna ProLogue Eight is a high-end vacuum tube CD player from around 2008, renowned for revolutionizing digital audio with its SuperTubeClock™, a low-noise mini-triode vacuum tube in the digital clock for superior resolution, detail, and dynamics. It employs a true dual-mono design with zero-feedback output stage using 12AX7 and 12AU7 tubes per channel, vacuum tube rectified power supply adapted from the ProLogue Three preamp with eleven regulation circuits, and premium components like Burr Brown SRC4192 upsampler (24-bit/192kHz) and PCM1792 DACs per channel. Custom isolation transformers separate analog and digital sections to minimize noise. Housed in a heavy-gauge steel chassis with high-gloss finish, it includes SoftStart™ circuitry for tube longevity, ceramic tube sockets, and a heavy anodized aluminum remote. Outputs include analog RCA and digital coaxial/optical. Praised for tube-like sound with spacious soundstage, lucid midrange, and musicality, though noted for high output impedance requiring compatible preamps.[1][3][7][10][15]