The expected lifespan of a Hi-Fi amplifier can vary depending on factors such as build quality, usage patterns, and environmental conditions. However, a well-maintained amplifier from a reputable manufacturer can last for many years, with some enthusiasts still enjoying vintage amplifiers that are several decades old. Regular maintenance, such as cleaning dust and debris from vents and connectors, and avoiding exposure to extreme temperatures or humidity, can help prolong the lifespan of your amplifier.