【Overview】 ・This item is a repaired and restored 50-year-old piece of junk. While all functions have been confirmed to operate normally, it is being sold as a junk item due to its age. Occasionally, some buyers make claims unrelated to basic functionality and request returns. We kindly request that only those who appreciate the value of a retro, repaired item purchase this product, rather than those who might make such claims. 【Product Description】 Product: Integrated Amplifier Manufacturer: SONY Model Number: TA-515 Release Date: Around 1978 Price: Unknown 【Appearance】 ・Both the front panel and the chassis are very clean, with no rust or dents. Considering it's over 50 years old, I believe it's in excellent condition. 【Repairs and Adjustments】 ・Complete repair of the main amplifier circuit (resistor and transistor replacement) ・Output DC bias current and voltage adjustment of the final stage transistors ・Cleaning of function keys, volume control, etc. 【Operational Check】 ・All functions, including the PHONO equalizer amplifier, are operating normally. 【Sound Quality Check】 ・Noise and distortion are low enough to be unnoticeable to the ear, and I feel it produces very good sound for an amplifier over 50 years old. 【Accessories】 ・None