You need a stereo volume or tone control that tracks both channels in sync. This Jaycar 10K ohm logarithmic (A) double-gang pot handles left and right from one shaft. The 1/4" D-type shaft runs 30mm, so it seats through your panel and grabs any standard knob. Log power rating 0.1W per section. One knob, two channels, done
| brand | Jaycar |
| resistance | 10K Ohm |
| taper | Logarithmic (A) |
| gang | Double |
| body_diameter | 16mm |
| shaft_type | 1/4 inch D-type |
| shaft_length | 30mm |
| power_rating_log | 0.1W |
| power_rating_linear | 0.2W |