Reducing my collections unit been cleaned and serviced deoixit all functions work only issue is the face plate has a crack under the tunning knob. Specs: The Onkyo TX-4500 is a highly regarded classic "Golden Era" stereo receiver manufactured in the late 1970s. Known for its imposing physical footprint, robust build quality, and excellent FM tuner performance, it features Onkyo’s signature Quartz Locked tuning system for drift-free radio reception. Key Specifications & Performance Power Output: 55 watts per channel minimum RMS into 8 ohms (both channels driven, 20Hz to 20kHz). It scales up to 65 watts per channel into a 4-ohm load. Total Harmonic Distortion (THD): 0.1% at rated power, providing a very clean, low-distortion vintage soundstage. Damping Factor: 50 (into 8 ohms at 1kHz), which gives it solid control over large-format bass drivers. Weight: 16.6 kg (approx. 36.6 lbs), a testament to its massive internal power transformer and heavy chassis construction. Dimensions: 583 x 163 x 430 mm (roughly 23" W x 6.5" H x 17" D), making it exceptionally wide and deep compared to typical component shelving. Noteworthy Features Connectivity Options: It is incredibly versatile, equipped with 2 Phono inputs for turntables and 3 Tape monitors (which double perfectly as auxiliary inputs for modern streaming DACs or Bluetooth receivers). Pre-Out / Main-In Jumpers: It includes rear-panel jumpers that allow you to separate the preamplifier stage from the power amplifier section, providing an easy path for adding external amplification or processing gear. Three Speaker Zones: The rear terminal layout supports running up to 3 independent pairs of speakers (A, B, and C).