I use a small desktop fan from Brookstone with my A/V receiver. The fan was $30 at Brookstone a couple of years ago, and I bought an AC adapter at Radio Shack for around $10. I'm not sure if Brookstone still sells the fan. If they do, just make sure you get the correct size AC adapter pin at Radio Shack to fit the input on the fan. When I bought the AC adapter, the pin was free. I just had to choose the correct size. Anyway, this fan allows you to adjust the speed, and I use a lower speed that renders the fan silent.