Normal 0 false false false MicrosoftInternetExplorer4 Like new Khozmo Acoustic Passive Preamplifier. Made in Spain. Ultra High End Passive Preamplifier / 48 step Resistor network attenuator. Stereo with Input Selector. 3 pairs of inputs, 2 pairs of outputs. Chassis and Knob color - Black. 25K Input Impedance. RCA connectors. 48 steps SERIES (manual) See the website for additional information. https://khozmo.com/ https://khozmo.com/product-category/preamplifiers/ In essence the passive preamplifier is merely a volume control with a source selector designed to attenuate the signal going from the source to the amplifier. Since it is passive, it has no inherent gain because it has no active components (tubes or transistors) in the signal path. Without coloration, added noise or distortion, it has unrivaled transparency enabling you to enjoy the original recording and the source signal to the fullest!