Search for “Technics SA-G76 original manual.” Expect to pay $15–$30. Some sellers also reprint high-quality reproductions.
Panasonic no longer supports this model, but their legacy parts department may have a photocopy. Call 1-800-211-7262 (USA) and ask for “Classic Audio Manuals.” technics sa-g76 user manual
10Hz to 60kHz, allowing for a wide range of audio reproduction. Search for “Technics SA-G76 original manual