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About the ProLogue Three
The ProLogue Three is a dual mono vacuum-tube preamplifier with separate toroidal transformers for left and right channels, choke-regulated power supply, and DC tube heaters for reduced tube sensitivity. It uses two 5AR4 tubes for rectification and has no loop negative feedback or cathode followers, resulting in a vibrant midrange and a three-dimensional soundstage. The preamplifier is hand-made with point-to-point wiring, ceramic tube sockets, an Alps Blue Velvet potentiometer, and premium capacitors (Nichicon, Solen, Swellong). It features a SoftStart circuit to extend tube life and reduce thermal shock. The unit has four pairs of RCA inputs and two pairs of main RCA outputs plus one pair of tape outputs. It is designed to be quiet with low noise, making it suitable for high-efficiency speakers. The chassis is heavy gauge steel with a hand-rubbed finish and weighs 23.5 lbs (10.6 kg).
Specifications
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