I have a Fender 64 handwired DRRI, probably the best amp I've ever had or heard. I'm probably nit-picking here, but I noticed the other day that there's a slight hum when the amp is at idle. Definitely not noticeable when I'm playing. I usually have just a bit of reverb on, just to thicken things up a bit. Messing around, I found that the hum goes away when I turn the reverb off, either with the fs or the knob. Gets louder the more I turn the reverb up. Even when dimmed, and deep in surf city, the hum isn't noticeable when playing. So, what do ya think, forget about it and just play guitar, or some (easy) fix I could try to get rid of the hum?