The original 2-gang volume potentiometers in McIntosh C26 preamplifiers frequently suffered from poor gang error across the pot’s rotation, causing the stereo image to audibly change position as volume is changed.

We created a solution that uses a high resolution digitally-controlled analog attenuator to implement a new volume pot with extremely good tracking between channels. The original pot can either be replaced with a single gang linear pot with integral AC switch, or one gang of the original audio taper pot can be used as the control signal. Care was taken to ensure that the output attenuation versus pot rotation law matches that of the original C26 pot.

If you are interested, please contact us.