The technician who did the latest upgrades on my Pathos TT amp, which runs hot, suggested that a cooling fan would extend he useful life of capacitors and other components. I did some research online and came across AC Infinity (https://www.acinfinity.com/) which makes a range of compact, quiet, relatively inexpensive cooling fans for audio components. The fans I bought (see photo) have silicone feet and can be mounted in various positions. There are three speed settings the lowest of which is inaudible during playback. They can be powered from a USB port or wall socket.