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About the ProLogue 7 Mono
The PrimaLuna Prologue 7 Mono is a vacuum tube monoblock power amplifier designed to provide classic ultralinear all-tube sound with 70 watts output power per channel. It features a unique dual-feedback topology using cross-coupled current feedback for superior impulse behavior and gain stability, combined with a slight amount of negative feedback to achieve low distortion and low output impedance. The amplifier uses four KT88 output tubes per channel, supported by two 12AX7 and two 12AU7 tubes in the input and buffer stages. It offers 2, 4, and 8 Ohm speaker taps and a frequency response of 20Hz to 85kHz (+/- 0.5dB). The Prologue 7 Mono is compatible with various tube types, allowing users to experiment with different tonal colors. It includes upgraded Solen capacitors and fast recovery diodes for improved midband clarity and detail. The amplifier weighs 37.5 lbs per unit and measures 11" x 7.5" x 15.5" (WxHxD). It consumes 210 watts of power per amplifier and has an input sensitivity of 911mV with an input impedance of 100k Ohms. The amplifier is
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