Just finished building a Mojotone JTM45/50 kit. Biased it up last night. Sounds killer. Running E34L’s and a GZ34 rectifier. But I’m hearing a constant noise that I can only describe as a “cycle noise”... some kind of noise of cycling electricity or something is getting amplified. Not 60 cycle hum. More like a fast ticking sound, almost like a digital clock sound that you hear sometimes when recording SPDIF directly into a DAW. I dressed my leads as well as I could, making sure none of them were running parallel or near each other, but instead crossing at 90 degrees everywhere—especially when it comes to the leads going to and from the preamp tubes and the pots. Can’t figure out what’s causing this. Never encountered it before. I’m even plugging into a Furman power conditioned power strip, rather than straight into the wall. (I haven’t played the amp anywhere but my house, though. But I’ve never heard this from my other builds.) Any thoughts?