There are some out there, but they tend to be expensive. There are other reasons not to use them besides the cost.
I built a preamp using an expensive, high quality, conductive plastic, 4 pole pot several years ago. After using the thing for a year or so I found the individual sections started to mistrack resulting in the balance wandering as the volume changed. The preamp had a balance control which I had to use frequently (every time I changed the volume setting). I eventually got disgusted with the whole thing and swore off ganged pots for the rest of my life.
I rebuilt the thing using attenuator chips instead. They NEVER mistrack. Balance control is implemented by individually addressing the attenuator chips, so there is no need for another control.
Take a look at TI's PGA2310.
TD
I built a preamp using an expensive, high quality, conductive plastic, 4 pole pot several years ago. After using the thing for a year or so I found the individual sections started to mistrack resulting in the balance wandering as the volume changed. The preamp had a balance control which I had to use frequently (every time I changed the volume setting). I eventually got disgusted with the whole thing and swore off ganged pots for the rest of my life.
I rebuilt the thing using attenuator chips instead. They NEVER mistrack. Balance control is implemented by individually addressing the attenuator chips, so there is no need for another control.
Take a look at TI's PGA2310.
TD
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