SEX 3.0 channel imbalance

[changschoi2]

Hi everyone,

I bought a used bottlehead sex 3.0 for Klipsch Cornwall 3 and Grado sr325is.
I hear channel imbalance from both speakers and headphones and it’s more obvious when I use headphones.
I have tried different set of tubes and I have same result.
How can I fix this issue?

[Paul Birkeland]

You'll need to perform the voltage checks in the manual first to ensure that the amplifier is operating properly.