The PERDISCO TRK-9050 is a classic boombox (portable stereo cassette recorder/player) manufactured by Hitachi. PERDISCO TRK-9050 Boombox The Hitachi PERDISCO TRK-9050 is a vintage portable stereo system that was released in the late 1970s, known for its powerful sound and robust design typical of the era's 'ghettoblasters'. Type: Boombox (Portable Radio Cassette Player/Recorder) Manufacturer: Hitachi Year Manufactured: Circa 1978 Playable Media Format: Cassette Tape Radio Bands: AM/MW and FM (including FM Stereo reception) Color: Typically Black Power and Audio Specifications The unit was emphasized for its sound quality and volume: Specification Value Note Maximum Practical Output 15W This is a substantial power output for a portable unit of its time. Stereo Output 7.5W + 7.5W (EIAJ / DC rating) - Provides clear, distortion-free stereo sound. Cassette Deck Features The cassette mechanism, when maintained, provides reliable playback and recording functions: Functions: Playback, Fast Forward, Rewind Operation: Described as powerful and normal when working correctly. Maintenance: Units often require servicing (replacement of belts and roller rubber) due to age. Other Notes: No volume gully (meaning the volume control potentiometer operates smoothly without static/crackling), indicating quality components or maintenance. Connectivity and Power Power Source: Likely runs on AC power (mains power cable) and DC power (batteries) for portability, typical of boomboxes. The power cable is usually included with the main unit. Inputs/Outputs: The specific type and number of Audio Inputs/Outputs are not explicitly listed in the common specifications but standard features on similar models often included: Headphone Jack External Microphone Jacks Line In/Out In summary, the PERDISCO TRK-9050 is a highly regarded vintage Hitachi boombox from 1978, valued by collectors for its 15W of powerful stereo sound and its combination of AM/FM radio and cassette tape functionality.