Torii Jr. Amp. Bought in 2022. Has a hum coming out the left channel. Switched all cables around. Switched all tubes around. Switched speakers around. When inswitch between cd player and turntable all of these changes hum is still there. Changed power supply cable and even ran a drop cord across the house to a totally different outlet. Hum is still there. When I turn volume knob up or down volume of hum stays the same. Pleas help. I have isolated it to the amp somehow. Very frustrated.

Welcome to the forum, I can understand your frustration. I had a brand new amp start humming the day it arrived.

If you don't resolve it soon with help from the forum, call Sarah and set up a time to talk Steve, he is great, and very willing to assist.

I had to send mine back to Decware, they covered the shipping because it was so new, and it was a rapid turn around. Problem free and amazing ever since.