Preamp and Phono tubes, because of the gains involved, should always be tested/certified, "Low Noise", "Preamp", "Platinum Grade", etc. Hiss(tube rush) may result otherwise. The other mentioned noises, during play or warm-up, are not normal and indicate problem tubes. Often one can locate the errant tube easily, by tapping gently with a pencil eraser. there are many tube testers that do not apply full operating voltage to a tube being tested, or only test for transconductance, shorts and gas. Internal circuit problems often will not become apparent, until the tube is actually in use.
Heeeelp New used BAT Vxi3 - Hisssssssss
ok, this cant be normal. I hooked up my new to me but used BAT. XLR from preamp to amp, but using singled ended from CD to Preamp.
I start it up and im getting a rather loud hiss. Volumn independent. It says constant and is the same on all inputs regardless if anything is hooked up or not.
Is this normal. It cant be!
I start it up and im getting a rather loud hiss. Volumn independent. It says constant and is the same on all inputs regardless if anything is hooked up or not.
Is this normal. It cant be!