The Audio Research SP-5 High End Stereo Preamplifier in Silver is a vintage audio unit manufactured in the 1970s in the United States. It features a Class A amplifier class, 4 audio outputs including stereo L/R RCA and tape monitor RCA, and 5 audio inputs including phono, tape, tuner, aux 2, and aux 1. This preamplifier is designed for high-end audio enthusiasts looking for a premium analog audio experience with its sleek silver design and advanced features like phono input. Perfect for connecting various audio sources to a power amplifier for a luxurious home audio setup. Local pick up only.