Tune (Hybrid) preamp Making Loud "Burping" Sounds

@soix 🤣🤣

Put it over your shoulder and pat it on the back. 

In tubed equipment, if I hear something strange I always swap out the tubes. Then depending on the age of tubes and configuration (one per channel… two, three, or four) start swapping the old back in until I find the culprit. It has always been a tube.

I always keep an extra set of tubes around. I also listen to my systems a lot daily.

Always check the tubes first. Put in a fresh pair of known good tubes. 

if i heard any piece of my equipment "backfire", i'd chuck it right out the window!