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The ProLogue Seven shares much of its basic circuitry with the ProLogue Five stereo power amp. The novel phase-splitter and driver stage implementation have been adapted for monaural functionality in linearity, distortion, and power delivery. We accomplish this by using an industry-unique dual-feedback topology: Cross-coupled current feedback for superior impulse behaviour and gain stability at...[more]

The ProLogue Six shares much of its basic circuitry with the ProLogue Four stereo power amp. The novel phase-splitter and driver stage implementation have been adapted for monaural functionality in linearity, distortion, and power delivery. We accomplish this by using an industry-unique dual-feedback topology: Cross-coupled current feedback for superior impulse behaviour and gain stability at a...[more]

Non-inverting, no global feedback, extremely low-noise wide-bandwidth amplifying stages; smooth "Blue Velvet" Alps Potentiometer. Low output impedance without resorting to cathode follower output (Anode Out). Per channel dedicated power transformers & tube rectifiers (5AR4). Triple Pi ( ) C-L-C-R-Z-R-C-R-filtering with integrated fully passive powersupply parallel regulation for each channel. P...[more]

PrimaLuna Adaptive AutoBias Board, with integrated plate-fuse for hassle free protection. Superfast super low-noise rectifier circuitry. Highest quality capacitors in signal path and powersupply bypass (where it matters most). Low feedback (6dB), low-noise wide-bandwidth design for maximum detail retrieval, micro-contrasts and excellent impulse behaviour and drive power. PrimaLuna designed and mat...[more]