Greetings! I’ve been on TDPRI for a couple years but new to this forum. First of all, big thanks to Rob Robinette for his website and the wealth of information he’s provided. I just finished starting up my Champ Micro build, I’ve only played through it a short time but pretty sure I’ve found my low watt amp. I love the 5E3 I built a few years ago but it’s just WAY too loud for home use. I’d been looking for a nice 1 wattish amp kit but it seems no one is still selling one and then I came across Rob’s site and with what he provides there is no need to purchase a kit. I found his explanations and info very sufficient to source and build your own amp. The only issue I have is a persistent buzz that is not bad unless the preamp volume is close to maxed out, then it’s pretty irritating. I thought I would let someone else take a look and see if they spot something. I’ve moved wires around with a probe but it doesn’t seem to affect the buzz at all, very constant and can be heard even if both volumes are on zero, although it’s very slight. Master volume doesn’t seem to affect it. My house power is not that great, much is ungrounded but even the sections that are grounded still produce the buzz. Yes, I miscounted my layout so there is empty space on the board. Thanks for any help!