To clean the knobs while on the unit, try a mild soap and water solution such as dishwashing liquid on a cloth. If this does not remove the "dirt", it is probably because some of the thin plating has worn off the knob from the oil on your fingers. Consider it "patina" and continue to enjoy the music.
joule la150mkII- preamp
hi guys,
i have a Joule lA 150 se [mk ii ]. the gold knobs on them look dirty . i was looking for a way to remove the knobs, but i just can get them off. no screws or hex nuts or holes. can anyone help. or , can someone recomend a way to clean the knobs while on the pre amp without damaging it?
thank you
sy